Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Choo, Jinhyun"'
Autor:
Fei, Fan, Choo, Jinhyun
Publikováno v:
Comput. Geotech. 177 (2025) 106890
The phase-field method has become popular for the numerical modeling of fluid-filled fractures, thanks to its ability to represent complex fracture geometry without algorithms. However, the algorithm-free representation of fracture geometry poses a s
Externí odkaz:
http://arxiv.org/abs/2410.20039
Autor:
Cao, Yadi, Zhao, Yidong, Li, Minchen, Yang, Yin, Choo, Jinhyun, Terzopoulos, Demetri, Jiang, Chenfanfu
Publikováno v:
Comput. Mech. 2024. Unstructured moving least squares material point methods: a stable kernel approach with continuous gradient reconstruction on general unstructured tessellations
The Material Point Method (MPM) is a hybrid Eulerian Lagrangian simulation technique for solid mechanics with significant deformation. Structured background grids are commonly employed in the standard MPM, but they may give rise to several accuracy p
Externí odkaz:
http://arxiv.org/abs/2312.10338
Publikováno v:
Internat. J. Numer. Methods Engrg. 124 (23) (2023) 5334-5355
The material point method (MPM) is frequently used to simulate large deformations of nearly incompressible materials such as water, rubber, and undrained porous media. However, MPM solutions to nearly incompressible materials are susceptible to volum
Externí odkaz:
http://arxiv.org/abs/2209.02466
Autor:
Fei, Fan, Choo, Jinhyun
Publikováno v:
Int. J. Numer. Anal. Methods Geomech. 47 (2023) 349-369
In this paper, the Barton-Bandis model for rock joints is extended to cyclic loading conditions, without any new material parameter. Also developed herein is an algorithm for implicit numerical solution of the extended Barton-Bandis model, which can
Externí odkaz:
http://arxiv.org/abs/2207.06026
Publikováno v:
Int. J. Numer. Anal. Methods Geomech. 47 (2023) 187-211
Despite its critical role in the study of earthquake processes, numerical simulation of the entire stages of fault rupture remains a formidable task. The main challenges in simulating a fault rupture process include complex evolution of fault geometr
Externí odkaz:
http://arxiv.org/abs/2206.07933
Publikováno v:
Acta Geotech. 17 (2022) 5597-5612
Granular impact -- the dynamic intrusion of solid objects into granular media -- is widespread across scientific and engineering applications including geotechnics. Existing approaches for simulating granular impact dynamics have relied on either a p
Externí odkaz:
http://arxiv.org/abs/2108.02080
Publikováno v:
Comput. Methods Appl. Mech. Engrg. 393 (2021) 114820
We present a barrier method for treating frictional contact on interfaces embedded in finite elements. The barrier treatment has several attractive features, including: (i) it does not introduce any additional degrees of freedom or iterative steps, (
Externí odkaz:
http://arxiv.org/abs/2107.05814
We propose the convergent graph solver (CGS), a deep learning method that learns iterative mappings to predict the properties of a graph system at its stationary state (fixed point) with guaranteed convergence. CGS systematically computes the fixed p
Externí odkaz:
http://arxiv.org/abs/2106.01680
Publikováno v:
Int. J. Numer. Anal. Methods Geomech. 46 (2022) 841-868
Phase-field modeling -- a continuous approach to discontinuities -- is gaining popularity for simulating rock fractures due to its ability to handle complex, discontinuous geometry without an explicit surface tracking algorithm. None of the existing
Externí odkaz:
http://arxiv.org/abs/2105.14663