Results 21 to 30 of about 106 (104)

An Extended B‐Spline‐Based Material Point Method for Contact Problems

International Journal for Numerical Methods in Engineering, Volume 126, Issue 3, 15 February 2025.
ABSTRACT A novel Material Point Method (MPM) is introduced for addressing contact problems. In contrast to the standard multi‐velocity field approach, this method employs a penalty method to evaluate contact forces at the discretised boundaries of their respective physical domains.
Emmanouil G. Kakouris, Manolis N. Chatzis, Savvas Triantafyllou   +2 more
wiley   +1 more source

Mapping 3D Overthrust Structures by a Hybrid Modeling Method

Earth and Space Science, Volume 12, Issue 1, January 2025.
Abstract A rational three‐dimensional (3D) geological model with complex characteristics generated on a small amount of data is a crucial data infrastructure for scientific research and many applications. However, reconstructing structures with multi‐Z values on a single point caused by folding or overthrusting is still one of the bottlenecks in 3D ...
Weisheng Hou, Yanhua Li, Shuwan Ye, Songhua Yang, Fan Xiao   +4 more
wiley   +1 more source

Learning Correlations Between Computational Scale and Performance for Accurate Numerical Modeling: Application Case of Dam‐Break Flood Processes

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Scientists aim to accurately simulate and characterize complex natural phenomena, thus revealing the underlying natural laws or physical mechanisms governing these phenomena. Conventional physical experiments require significant time and cost, and numerical methods offer an alternative solution. However, modeling complex phenomena such as fluid flow in
Xiaoyu Qi, Gang Mei, Mimi Luo, Nengxiong Xu, H. Naderpour   +4 more
wiley   +1 more source

Constitutive description of snow at finite strains by the modified cam‐clay model and an implicit gradient damage formulation

International Journal for Numerical Methods in Engineering, Volume 125, Issue 24, 30 December 2024.
Abstract Snow, characterized as a unique granular and low‐density material, exhibits intricate behavior influenced by the proximity to its melting point and its three‐phase composition. This composition entails a structured ice skeleton surrounded by voids filled with air and spread with liquid water.
Ahmad Moeineddin, Jakob Platen, Michael Kaliske   +2 more
wiley   +1 more source

The mixed displacement method to avoid shear locking in problems in elasticity

Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 4, December 2024.
Abstract The mixed displacement (MD) method was initially developed to mitigate geometrical locking effects in beams, plates, and shells with the intention of having intrinsically locking‐free characteristics while using equal‐order interpolation for all degrees of freedom. In other words, it is an unlocking scheme that works independent of the element
Tarun Kumar Mitruka Vinod Kumar Mitruka, Manfred Bischoff   +1 more
wiley   +1 more source

Reconstruction of implicit surfaces from fluid particles using convolutional neural networks

Computer Graphics Forum, Volume 43, Issue 8, December 2024.
Abstract In this paper, we present a novel network‐based approach for reconstructing signed distance functions from fluid particles. The method uses a weighting kernel to transfer particles to a regular grid, which forms the input to a convolutional neural network.
C. Zhao, T. Shinar, C. Schroeder
wiley   +1 more source

Multiscale Computational and Artificial Intelligence Models of Linear and Nonlinear Composites: A Review

Small Science, Volume 4, Issue 5, May 2024.
This research reviews state‐of‐the‐art and latest advances in multiscale modeling methods spanning molecular, micro‐, meso, and macroscale models for hard and soft composites. These models range from molecular dynamics simulations, finite‐element analyses to machine learning/deep learning surrogate models simulating nonlinear constitutive material ...
Mohit Agarwal, Parameshwaran Pasupathy, Xuehai Wu, Stephen S. Recchia, Assimina A. Pelegri   +4 more
wiley   +1 more source

Modeling cracks in viscoelastic materials at finite strains

International Journal for Numerical Methods in Engineering, Volume 125, Issue 5, 15 March 2024.
Abstract Viscosity is a manifestation of internal friction in materials. Such friction is accompanied by the dissipation of energy, which affects deformation and fracture. In the present work, we develop a new theoretical formulation and its numerical implementation for modeling fracture in viscoelastic soft materials.
Suhib Abu‐Qbeitah, Mahmood Jabareen, Konstantin Y. Volokh   +2 more
wiley   +1 more source

Application of the Method of Initial Functions to Study Dynamics and Stress Distribution in Structural Members

Advances in Civil Engineering, Volume 2024, Issue 1, 2024.
This study investigates plate analyses employing the method of initial functions (MIFs) across various plate geometries and loading conditions. The conclusions derived from thick rectangular plates highlight substantial thickness‐induced effects on deflection and stress distributions.
Jitendra Namdeo, S. K. Dubey, Rahul Biswas, Rakesh Patel, Meng Gao   +4 more
wiley   +1 more source

Localization of the ventricular pacing site from BSPM and standard 12-lead ECG: a comparison study. [PDF]

Sci Rep, 2023
Sedova KA, van Dam PM, Blahova M, Necasova L, Kautzner J.   +4 more
europepmc   +1 more source