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A consistent and comprehensive computational approach for general Fluid-Structure-Contact Interaction problemsMay 23 2019We present a consistent approach that allows to solve challenging general nonlinear fluid-structure-contact interaction (FSCI) problems. The underlying continuous formulation includes both "no-slip" fluid-structure interaction as well as frictionless ... More
Semi-Lagrangian Subgrid Reconstruction for Advection-Dominant Multiscale ProblemsMay 21 2019We introduce a new framework of numerical multiscale methods for advection-dominated problems motivated by climate sciences. Current numerical multiscale methods (MsFEM) work well on stationary elliptic problems but have difficulties when the model involves ... More
Mathematical method for calculating batch fragmentations and their impacts on product recall within a FIFO assignment policyMay 21 2019This study explores the interactions between order sizes, batch sizes and potential product recalls within a FIFO assignment policy. Evidence is provided that the extent of a product recall is related to the fragmentation of the batches of input materials ... More
A new Fragile Points Method (FPM) in computational mechanics, based on the concepts of Point Stiffnesses and Numerical Flux CorrectionsMay 21 2019In this paper, a new method, named the Fragile Points Method (FPM), is developed for computer modeling in engineering and sciences. In the FPM, simple, local, polynomial, discontinuous and Point-based trial and test functions are proposed based on randomly ... More
An Adaptive Quasi-Continuum Approach for Modeling Fracture in Networked Materials: Application to Modeling of Polymer NetworksMay 21 2019Materials with network-like microstructure, including polymers, are the backbone for many natural and human-made materials such as gels, biological tissues, metamaterials, and rubbers. Fracture processes in these networked materials are intrinsically ... More
Multigrid-reduction-in-time for Eddy Current problemsMay 16 2019Parallel-in-time methods have shown success for reducing the simulation time of many time-dependent problems. Here, we consider applying the multigrid-reduction-in-time (MGRIT) algorithm to a voltage-driven eddy current model problem.
Electre-Score: A first outranking based method for scoring actionsMay 15 2019In this paper we present (to the best of our knowledge) the first outranking method to assign a score to each alternative. It is a method of the Electre family, and we will call it Electre-Score. Contrarily to the Multi-Attribute Value Theory methods, ... More
Pareto-Optimal Allocation of Transactive Energy at Market Equilibrium in Distribution Systems: A Constrained Vector Optimization ApproachMay 15 2019In a grid constrained transactive distribution system market, distribution locational marginal pricing DLMP is influenced by the distance from the substation to an energy user, thereby causing households that are further away from the substation to be ... More
Fast assembly of Galerkin matrices for 3D solid laminated composites using finite element and isogeometric discretizationsMay 14 2019This work presents a novel methodology for speeding up the assembly of stiffness matrices for laminate composite 3D structures in the context of isogeometric and finite element discretizations. By splitting the involved terms into their in-plane and out-of-plane ... More
Synthetic aperture imaging with intensity-only dataMay 13 2019We consider imaging the reflectivity of scatterers from intensity-only data recorded by a single moving transducer that both emits and receives signals, forming a synthetic aperture. By exploiting frequency illumination diversity, we obtain multiple intensity ... More
Similarity Grouping-Guided Neural Network Modeling for Maritime Time Series PredictionMay 13 2019Reliable and accurate prediction of time series plays a crucial role in maritime industry, such as economic investment, transportation planning, port planning and design, etc. The dynamic growth of maritime time series has the predominantly complex, nonlinear ... More
Adaptive surrogate models for parametric studiesMay 12 2019The computational effort for the evaluation of numerical simulations based on e.g. the finite-element method is high. Metamodels can be utilized to create a low-cost alternative. However the number of required samples for the creation of a sufficient ... More
Diversification Across Mining Pools: Optimal Mining Strategies under PoWMay 12 2019Mining is a central operation of all proof-of-work (PoW) based cryptocurrencies. The vast majority of miners today participate in "mining pools" instead of "solo mining" in order to lower risk and achieve a more steady income. However, this rise of participation ... More
Efficient solutions for nonlocal diffusion problems via boundary-adapted spectral methodsMay 09 2019We introduce an efficient boundary-adapted spectral method for peridynamic diffusion problems with arbitrary boundary conditions. The spectral approach transforms the convolution integral in the peridynamic formulation into a multiplication in the Fourier ... More
An Efficient and high accuracy finite-difference scheme for the acoustic wave equation in 3D heterogeneous mediaMay 09 2019Efficient and accurate numerical simulation of 3D acoustic wave propagation in heterogeneous media plays an important role in the success of seismic full waveform inversion (FWI) problem. In this work, we employed the combined scheme and developed a new ... More
A simulation method for fatigue-driven delamination in layered structures involving non-negligible fracture process zones and arbitrarily shaped crack frontsMay 09 2019Most of the existing methods for fatigue-driven delamination are limited to two-dimensional (2D) applications or their predictive capabilities have not been validated in three-dimensional (3D) problems. This work presents a new cohesive zone-based computational ... More
Predicting Dynamic Modulus of Asphalt Mixture Using Data Obtained from Indirect Tension Mode of TestingMay 08 2019Understanding stress-strain behavior of asphalt pavement under repetitive traffic loading is of critical importance to predict pavement performance and service life. For viscoelastic materials, the stress-strain relationship can be represented by the ... More
Modern theory of hydraulic fracture modeling with using explicit and implicit schemesMay 08 2019The paper presents novel results, obtained on the basis of the modified theory of hydraulic fractures (HF). The theory underlines significance of the speed equation. When applied to numerical simulation of HF, the theory reveals three distinct issues: ... More
Design and Optimization of Conforming Lattice StructuresMay 08 2019Inspired by natural cellular materials such as trabecular bone, lattice structures have been developed as a new type of lightweight material. In this paper we present a novel method to design lattice structures that conform with both the principal stress ... More
Multifidelity probability estimation via fusion of estimatorsMay 07 2019This paper develops a multifidelity method that enables estimation of failure probabilities for expensive-to-evaluate models via information fusion and importance sampling. The presented general fusion method combines multiple probability estimators with ... More
Bayesian Optimization using Deep Gaussian ProcessesMay 07 2019Bayesian Optimization using Gaussian Processes is a popular approach to deal with the optimization of expensive black-box functions. However, because of the a priori on the stationarity of the covariance matrix of classic Gaussian Processes, this method ... More
An extended Elrod-Adams model to account for backpressure and blow-by inceptionMay 06 2019The Piston-Ring-Liner system is the main tribological component of internal combustion engines. The Elrod-Adams model is customarily used to numerically assess the hydrodynamics of different ring designs and liner surface treatments. However, that model ... More
Topology optimization on two-dimensional manifoldsMay 06 2019Topology optimization is one of the most-used method to inversely determine the geometrical configurations of structures. In the current density method-based topology optimization, the design variable used to represent the structure was usually defined ... More
Numerical Modelling of Crack Initiation, Propagation and Branching under Dynamic LoadingMay 05 2019In this paper crack initiation, propagation and branching phenomena are simulated using the Pseudo-Spring Smooth Particle Hydrodynamics (SPH) in two and three-dimensional domains. The pseudo-spring analogy is used to model material damage. Here, the interaction ... More
An Improved Accurate Solver for the Time-Dependent RTE in Underwater Optical Wireless CommunicationsMay 04 2019In this paper, an improved numerical solver to evaluate the time-dependent radiative transfer equation (RTE) for underwater optical wireless communications (UOWC) is investigated. The RTE evaluates the optical path-loss of light wave in an underwater ... More
On Transfer Learning For Chatter Detection in Turning Using Wavelet Packet Transform and Empirical Mode DecompositionMay 03 2019The increasing availability of sensor data at machine tools makes automatic chatter detection algorithms a trending topic in metal cutting. Two prominent and advanced methods for feature extraction via signal decomposition are Wavelet Packet Transform ... More
Bending models of lipid bilayer membranes: spontaneous curvature and area-difference elasticityMay 01 2019We preset a computational study of bending models for the curvature elasticity of lipid bilayer membranes that are relevant for simulations of vesicles and red blood cells. We compute bending energy and forces on triangulated meshes and evaluate and extend ... More
Fast Mesh Refinement in Pseudospectral Optimal ControlApr 29 2019Mesh refinement in pseudospectral (PS) optimal control is embarrassingly easy --- simply increase the order $N$ of the Lagrange interpolating polynomial and the mathematics of convergence automates the distribution of the grid points. Unfortunately, as ... More
Computational Design of Finite Strain Auxetic Metamaterials via Topology Optimization and Nonlinear HomogenizationApr 25 2019A novel computational framework for designing metamaterials with negative Poisson's ratio over a large strain range is presented in this work by combining the density-based topology optimization together with a mixed stress/deformation driven nonlinear ... More
A data-driven proxy to Stoke's flow in porous mediaApr 25 2019The objective for this work is to develop a data-driven proxy to high-fidelity numerical flow simulations using digital images. The proposed model can capture the flow field and permeability in a large verity of digital porous media based on solid grain ... More
A pressure field model for fast, robust approximation of net contact force and moment between nominally rigid objectsApr 25 2019We introduce an approximate model for predicting the net contact wrench between nominally rigid objects for use in simulation, control, and state estimation. The model combines and generalizes two ideas: a bed of springs (an "elastic foundation") and ... More
Continuous-Time Mean-Variance Portfolio Optimization via Reinforcement LearningApr 25 2019We consider continuous-time Mean-variance (MV) portfolio optimization problem in the Reinforcement Learning (RL) setting. The problem falls into the entropy-regularized relaxed stochastic control framework recently introduced in Wang et al. (2019). We ... More
Continuous-Time Mean-Variance Portfolio Selection: A Reinforcement Learning FrameworkApr 25 2019May 05 2019We approach the continuous-time mean-variance (MV) portfolio selection with reinforcement learning (RL). The problem is to achieve the best tradeoff between exploration and exploitation, and is formulated as an entropy-regularized, relaxed stochastic ... More
Data-driven Computing in Elasticity via Chebyshev ApproximationApr 23 2019This paper proposes a data-driven approach for computing elasticity by means of a non-parametric regression approach rather than an optimization approach. The Chebyshev approximation is utilized for tackling the material data-sets non-linearity of the ... More
A hybridizable discontinuous Galerkin method for electromagnetics with a view on subsurface applicationsApr 23 2019Two Hybridizable Discontinuous Galerkin (HDG) schemes for the solution of Maxwell's equations in the time domain are presented. The first method is based on an electromagnetic diffusion equation, while the second is based on Faraday's and Maxwell--Amp\`ere's ... More
Towards whole program generation of quadrature-free discontinuous Galerkin methods for the shallow water equationsApr 18 2019The shallow water equations (SWE) are a commonly used model to study tsunamis, tides, and coastal ocean circulation. However, there exist various approaches to discretize and solve them efficiently. Which of them is best for a certain scenario is often ... More
A QoS-Oriented Trajectory Optimization in Swarming Unmanned-Aerial-Vehicles CommunicationsApr 16 2019This letter aims to present a novel approach for unmanned aerial vehicles (UAV)' path planning with respect to certain quality of service requirements. More specifically, we study the max-min fairness problem in an air-to-ground communication system where ... More
Reproducible Workflow on a Public Cloud for Computational Fluid DynamicsApr 16 2019In a new effort to make our research transparent and reproducible by others, we developed a workflow to run computational studies on a public cloud. It uses Docker containers to create an image of the application software stack. We also adopt several ... More
Short Overview of Early Developments of the Hardy Cross Type Methods for Computation of Flow Distribution in Pipe NetworksApr 16 2019Hardy Cross originally proposed a method for analysis of flow in networks of conduits or conductors in 1936. His method was the first really useful engineering method in the field of pipe network calculation. Only electrical analogs of hydraulic networks ... More
fMRI Based Cerebral Instantaneous Parameters for Automatic Alzheimer's, Mild Cognitive Impairment and Healthy Subject ClassificationApr 16 2019Automatic identification and categorization of Alzheimer's patients and the ability to distinguish between different levels of this disease can be very helpful to the research community in this field, since other non-automatic approaches are very time-consuming ... More
The many roads to the simulation of reaction systemsApr 15 2019Reaction systems are a computational model inspired by the bio-chemical reactions that happen inside biological cells. They have been and currently are studied for their many nice theoretical properties. They are also a useful modeling tool for biochemical ... More
Fatigue design load calculations of the offshore NREL 5MW benchmark turbine using quadrature rule techniquesApr 11 2019A novel approach is proposed to reduce, compared to the conventional binning approach, the large number of aeroelastic code evaluations that are necessary to obtain equivalent loads acting on wind turbines. These loads describe the effect of long-term ... More
Simulation of hyperelastic materials in real-time using Deep LearningApr 10 2019The finite element method (FEM) is among the most commonly used numerical methods for solving engineering problems. Due to its computational cost, various ideas have been introduced to reduce computation times, such as domain decomposition, parallel computing, ... More
Data assimilation in a nonlinear time-delayed dynamical systemApr 09 2019When the heat released by a flame is sufficiently in phase with the acoustic pressure, a self-excited thermoacoustic oscillation can arise. These nonlinear oscillations are one of the biggest challenges faced in the design of safe and reliable gas turbines ... More
An Open Source Modeling Framework for Interdependent Energy-Transportation- Communication Infrastructure in Smart and Connected CommunitiesApr 07 2019Infrastructure in future smart and connected communities is envisioned as an aggregate of public services, including the energy, transportation and communication systems, all intertwined with each other. The intrinsic interdependency among these systems ... More
Phase field modelling of crack propagation in functionally graded materialsApr 07 2019We present a phase field formulation for fracture in functionally graded materials (FGMs). The model builds upon homogenization theory and accounts for the spatial variation of elastic and fracture properties. Several paradigmatic case studies are addressed ... More
Mitigating Gyral Bias in Cortical Tractography via Asymmetric Fiber Orientation DistributionsApr 06 2019Apr 11 2019Diffusion tractography in brain connectomics often involves tracing axonal trajectories across gray-white matter boundaries in gyral blades of complex cortical convolutions. To date, gyral bias is observed in most tractography algorithms with streamlines ... More
Mitigating Gyral Bias in Cortical Tractography via Asymmetric Fiber Orientation DistributionsApr 06 2019Diffusion tractography in brain connectomics often involves tracing axonal trajectories across gray-white matter boundaries in gyral blades of complex cortical convolutions. To date, gyral bias is observed in most tractography algorithms with streamlines ... More
A Surface Integral Formulation for Scattering Modeling by 2D Penetrable ObjectsApr 05 2019In this paper, we proposed a single-source surface integral formulation to accurately solve the scattering problems by 2D penetrable objects. In this method, the objects are replaced by their surrounding medium through enforcing a surface equivalent electric ... More
Numerical Simulation of Metal Machining Process with Eulerian and Total Lagrangian SPHApr 04 2019This paper presents numerical simulations of metal machining processes with Eulerian and Total Lagrangian Smoothed Particle Hydrodynamics (SPH). Being a mesh-free method, SPH can conveniently handle large deformation and material separation. However, ... More
Accurate and Fast reconstruction of Porous Media from Extremely Limited Information Using Conditional Generative Adversarial NetworkApr 04 2019Porous media are ubiquitous in both nature and engineering applications, thus their modelling and understanding is of vital importance. In contrast to direct acquisition of three-dimensional (3D) images of such medium, obtaining its sub-region (s) like ... More
On the convergence of cutting-plane methods for robust optimization with ellipsoidal uncertainty setsApr 02 2019Recent advances in cutting-plane strategies applied to robust optimization problems show that they are competitive with respect to problem reformulations and interior-point algorithms. However, although its application with polyhedral uncertainty sets ... More
Biomechanical modeling and computer simulation of the brain during neurosurgeryApr 02 2019Computational biomechanics of the brain for neurosurgery is an emerging area of research recently gaining in importance and practical applications. This review paper presents the contributions of the Intelligent Systems for Medicine Laboratory and it's ... More
A general-purpose element-based approach to compute dispersion relations in periodic materials with existing finite element codesApr 02 2019In most of standard Finite Element (FE) codes it is not easy to calculate dispersion relations from periodic materials. Here we propose a new strategy to calculate such dispersion relations with available FE codes using user element subroutines. Typically, ... More
Fast, accurate, and transferable many-body interatomic potentials by genetic programmingApr 01 2019Apr 07 2019The length and time scales of atomistic simulations are limited by the computational cost of the methods used to predict material properties. In recent years there has been great progress in the use of machine learning algorithms to develop fast and accurate ... More
MFV: Application software for the visualization and characterization of the DC magnetic field distribution in circular coil systemsApr 01 2019The characterization of the magnetic field distribution is essential in experiments and devices that use magnetic field coil systems. We present an open-source application software, MFV (Magnetic Field Visualizer), for the visualization of the distribution ... More
Finite strain homogenization using a reduced basis and efficient samplingApr 01 2019Apr 04 2019The computational homogenization of hyperelastic solids in the geometrically nonlinear context has yet to be treated with sufficient efficiency in order to allow for real-world applications in true multiscale settings. This problem is addressed by a problem ... More
Finite strain homogenization using a reduced basis and efficient samplingApr 01 2019The computational homogenization of hyperelastic solids in the geometrically nonlinear context has yet to be treated with sufficient efficiency in order to allow for real-world applications in true multiscale settings. This problem is addressed by a problem ... More
A "poor man's" approach for high-resolution three-dimensional topology optimization of natural convection problemsMar 30 2019This paper treats topology optimization of natural convection problems. A simplified model is suggested to describe the flow of an incompressible fluid in steady state conditions, similar to Darcy's law for fluid flow in porous media. The equations for ... More
A Roadmap for Discretely Energy-Stable Schemes for Dissipative Systems Based on a Generalized Auxiliary Variable with Guaranteed PositivityMar 30 2019We present a framework for devising discretely energy-stable schemes for general dissipative systems based on a generalized auxiliary variable. The auxiliary variable, a scalar number, can be defined in terms of the energy functional by a general class ... More
Nonlinear Moment Matching for the Simulation-Free Reduction of Structural SystemsMar 28 2019This paper transfers the concept of moment matching to nonlinear structural systems and further provides a simulation-free reduction scheme for such nonlinear second-order models. After first presenting the steady-state interpretation of linear moment ... More
Numerical modeling of neutron transport in SP3 approximation by finite element methodMar 27 2019The SP3 approximation of the neutron transport equation allows improving the accuracy for both static and transient simulations for reactor core analysis compared with the neutron diffusion theory. Besides, the SP3 calculation costs are much less than ... More
Differential Geometric Foundations for Power Flow ComputationsMar 26 2019This paper aims to systematically and comprehensively initiate a foundation for using concepts from computational differential geometry as instruments for power flow computing and research. At this point we focus our discussion on the static case, with ... More
Estimation of the Shapley Value of a Peer-to-Peer Energy Sharing Game using Coalitional Stratified Random SamplingMar 26 2019Various peer-to-peer energy markets have emerged in recent years in an attempt to manage distributed energy resources in a more efficient way. One of the main challenges these models face is how to create and allocate incentives to participants. Cooperative ... More
A Multilevel Approach for Trace System in HDG DiscretizationsMar 26 2019We propose a multilevel approach for trace systems resulting from hybridized discontinuous Galerkin (HDG) methods. The key is to blend ideas from nested dissection, domain decomposition, and high-order characteristic of HDG discretizations. Specifically, ... More
Smoothed finite element method for stress intensity factor estimation: benefits and limitationsMar 26 2019The aim of this study was to check how efficient can be smoothed finite element method (FEM) for solution of the linear fracture mechanics problems. Accuracy of stress intensity factor (SIF) computation were investigated using three types of smoothed ... More
Improving the Scalability of a Prosumer Cooperative Game with K-Means ClusteringMar 26 2019Among the various market structures under peer-to-peer energy sharing, one model based on cooperative game theory provides clear incentives for prosumers to collaboratively schedule their energy resources. The computational complexity of this model, however, ... More
Data-Driven Microstructure Property RelationsMar 26 2019Apr 01 2019An image based prediction of the effective heat conductivity for highly heterogeneous microstructured materials is presented. The synthetic materials under consideration show different inclusion morphology, orientation, volume fraction and topology. The ... More
Data-Driven Microstructure Property RelationsMar 26 2019An image based prediction of the effective heat conductivity for highly heterogeneous microstructured materials is presented. The synthetic materials under consideration show different inclusion morphology, orientation, volume fraction and topology. The ... More
Pressure and flow statistics of Darcy flow from simulated annealingMar 22 2019The pressure and flow statistics of Darcy flow through a random permeable medium are expressed in a form suitable for evaluation by the method of simulated annealing. There are several attractive aspects to using simulated annealing: (i) any probability ... More
Pressure and flow statistics of Darcy flow from simulated annealingMar 22 2019Apr 03 2019The pressure and flow statistics of Darcy flow through a random permeable medium are expressed in a form suitable for evaluation by the method of simulated annealing. There are several attractive aspects to using simulated annealing: (i) any probability ... More
Accurate prediction of melt pool shapes in laser powder bed fusion by the non-linear temperature equation including phase changes - isotropic versus anisotropic conductivityMar 21 2019In this contribution, we validate a physical model based on a transient temperature equation (including latent heat) w.r.t. the experimental set AMB2018-02 provided within the additive manufacturing benchmark series, established at the National Institute ... More
Simplex space-time meshes in two-phase flow simulationsMar 21 2019In this paper, we present the numerical solution of two-phase flow problems of engineering significance with a space-time finite element method that allows for local temporal refinement. Our basis is the method presented in [3], which allows for arbitrary ... More
Simplex space-time meshes in thermally coupled two-phase flow simulations of mold fillingMar 20 2019The quality of plastic parts produced through injection molding depends on many factors. Especially during the filling stage, defects such as weld lines, burrs, or insufficient filling can occur. Numerical methods need to be employed to improve product ... More
A Geometrical Method for Low-Dimensional Representations of SimulationsMar 18 2019We propose a new data analysis approach for the efficient post-processing of bundles of finite element data from numerical simulations. The approach is based on the mathematical principles of symmetry. We consider the case where simulations of an industrial ... More
BRTSim, a general-purpose computational solver for hydrological, biogeochemical, and ecosystem dynamicsMar 17 2019This paper introduces the recent release v3.1a of BRTSim (BioReactive Transport Simulator), a general-purpose multiphase and multi-species liquid, gas and heat flow solver for reaction-advection-dispersion processes in porous and non-porous media with ... More
Model-Free Data-Driven Methods in Mechanics: Material Data Identification and SolversMar 15 2019This paper presents an integrated model-free data-driven approach to solid mechanics, allowing to perform numerical simulations on structures on the basis of measures of displacement fields on representative samples, without postulating a specific constitutive ... More
Comparison of Tumor and Normal Cells Protein-Protein Interaction Network ParametersMar 15 2019In this paper, we compared cancerous and normal cell according to their protein-protein interaction network. Cancer is one of the complicated diseases and experimental investigations have been showed that protein interactions have an important role in ... More
Novel Approach Towards Global Optimality of Optimal Power Flow Using Quadratic Convex OptimizationMar 13 2019Optimal Power Flow (OPF) can be modeled as a non-convex Quadratically Constrained Quadratic Program (QCQP). Our purpose is to solve OPF to global optimality. To this end, we specialize the Mixed-Integer Quadratic Convex Reformulation method (MIQCR) to ... More
Extended framework of Hamilton's principle applied to Duffing oscillationMar 13 2019The paper begins with a novel variational formulation of Duffing equation using the extended framework of Hamilton's principle (EHP). This formulation properly accounts for initial conditions, and it recovers all the governing differential equations as ... More
Suite of Meshless Algorithms for Accurate Computation of Soft Tissue Deformation for Surgical SimulationMar 12 2019The ability to predict patient-specific soft tissue deformations is key for computer-integrated surgery systems and the core enabling technology for a new era of personalized medicine. Element-Free Galerkin (EFG) methods are better suited for solving ... More
Solving Nonlinear Parabolic Equations by a Strongly Implicit Finite-Difference SchemeMar 12 2019We discuss the numerical solution of nonlinear parabolic partial differential equations, exhibiting finite-speed of propagation, via a strongly implicit finite-difference scheme with formal truncation error $\mathcal{O}\left[(\Delta x)^2 + (\Delta t)^2 ... More
Solving Nonlinear Parabolic Equations by a Strongly Implicit Finite-Difference SchemeMar 12 2019May 10 2019We discuss the numerical solution of nonlinear parabolic partial differential equations, exhibiting finite speed of propagation, via a strongly implicit finite-difference scheme with formal truncation error $\mathcal{O}\left[(\Delta x)^2 + (\Delta t)^2 ... More
Algorithms and Comparisons of Non-negative Matrix Factorization with Volume Regularization for Hyperspectral UnmixingMar 11 2019In this work, we consider nonnegative matrix factorization (NMF) with a regularization that promotes small volume of the convex hull spanned by the basis matrix. We present highly efficient algorithms for three different volume regularizers, and compare ... More
A Decision Support System for Multi-target GeosteeringMar 10 2019Geosteering is a sequential decision process under uncertainty. The goal of geosteering is to maximize the expected value of the well, which should be defined by an objective value-function for each operation. In this paper we present a real-time decision ... More
An extended polygonal finite element method for large deformation fracture analysisMar 09 2019Mar 20 2019The modeling of large deformation fracture mechanics has been a challenging problem regarding the accuracy of numerical methods and their ability to deal with considerable changes in deformations of meshes where having the presence of cracks. This paper ... More
An extended polygonal finite element method for large deformation fracture analysisMar 09 2019The modeling of large deformation fracture mechanics has been a challenging problem regarding the accuracy of numerical methods and their ability to deal with considerable changes in deformations of meshes where having the presence of cracks. This paper ... More
A highly parallel multilevel Newton-Krylov-Schwarz method with subspace-based coarsening and partition-based balancing for the multigroup neutron transport equations on 3D unstructured meshesMar 08 2019The multigroup neutron transport equations have been widely used to study the motion of neutrons and their interactions with the background materials. Numerical simulation of the multigroup neutron transport equations is computationally challenging because ... More
An efficient iterative method for looped pipe network hydraulicsMar 08 2019Original and improved version of the Hardy Cross iterative method with related modifications are today widely used for calculation of fluid flow through conduits in loops-like distribution networks of pipes with known node fluid consumptions. Fluid in ... More
Optimisation and Comprehensive Evaluation of Alternative Energising Paths for Power System RestorationMar 07 2019Power system restoration after a major blackout is a complex process, in which selection of energising paths is a key issue to realize unit and load restoration safely and efficiently. In general, the energising path scheme made beforehand may not be ... More
An adaptive strategy based on conforming quadtree meshes for kinematic limit analysisMar 07 2019We propose a simple and efficient scheme based on adaptive finite elements over conforming quadtree meshes for collapse plastic analysis of structures. Our main interest in kinematic limit analysis is concerned with both purely cohesive-frictional and ... More
Tackling Unit Commitment and Load Dispatch Problems Considering All Constraints with Evolutionary ComputationMar 06 2019Unit commitment and load dispatch problems are important and complex problems in power system operations that have being traditionally solved separately. In this paper, both problems are solved together without approximations or simplifications. In fact, ... More
Model Order Reduction for Temperature-Dependent Nonlinear Mechanical Systems: A Multiple Scales ApproachMar 05 2019The thermal dynamics in thermo-mechanical systems exhibits a much slower time scale compared to the structural dynamics. In this work, we use the method of multiple scales to reduce the thermo-mechanical structural models with a slowly-varying temperature ... More
Data-driven Neural Architecture Learning For Financial Time-series ForecastingMar 05 2019Forecasting based on financial time-series is a challenging task since most real-world data exhibits nonstationary property and nonlinear dependencies. In addition, different data modalities often embed different nonlinear relationships which are difficult ... More
A reduction methodology using free-free component eigenmodes and Arnoldi enrichmentMar 05 2019In order to perform faster simulations, the model reduction is nowadays used in industrial contexts to solve large and complex problems. However, the efficiency of such an approach is sometimes cut by the interface size of the reduced model and its reusability. ... More
On the stability of the generalized, finite deformation correspondence model of peridynamicsMar 05 2019A class of peridynamic material models known as constitutive correspondence models provide a bridge between classical continuum mechanics and peridynamics. These models are useful because they allow well-established local constitutive theories to be used ... More
Force Analysis for Interactions beyond the Closest Neighbor in a Periodic StructureMar 05 2019Periodic structures are a type of metamaterials in which their physical properties not only depend on the unit cell materials but also the way unit cells are arranged and interact with each other. Periodic structure have Interesting wave propagation properties ... More
Reconstruction of Hydraulic Data by Machine LearningMar 04 2019Numerical simulation models associated with hydraulic engineering take a wide array of data into account to produce predictions: rainfall contribution to the drainage basin (characterized by soil nature, infiltration capacity and moisture), current water ... More
Artificial Counselor System for Stock InvestmentMar 03 2019This paper proposes a novel trading system which plays the role of an artificial counselor for stock investment. In this paper, the stock future prices (technical features) are predicted using Support Vector Regression. Thereafter, the predicted prices ... More
Asymptotically compatible meshfree discretization of state-based peridynamics for linearly elastic composite materialsMar 01 2019State-based peridynamic models provide an important extension of bond-based models that allow the description of general linearly elastic materials. Meshfree discretizations of these nonlocal models are attractive due to their ability to naturally handle ... More