An implicit coupled MPM formulation for static and dynamic simulation of saturated soils based on a hybrid method DOI

Qin-yang Sang,

Yonglin Xiong,

Rongyue Zheng

et al.

Computational Mechanics, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 21, 2024

Language: Английский

A hydro-mechanical coupled contact method for two-phase geotechnical large deformation problems within the SNS-PFEM framework DOI
Huangcheng Fang, Zhen‐Yu Yin,

Dingli Zhang

et al.

Computer Methods in Applied Mechanics and Engineering, Journal Year: 2024, Volume and Issue: 420, P. 116743 - 116743

Published: Jan. 14, 2024

Language: Английский

Citations

6
A stable implicit nodal integration-based particle finite element method (N-PFEM) for modelling saturated soil dynamics DOI Creative Commons
Liang Wang, Xue Zhang, Jingjing Meng

et al.

Journal of Rock Mechanics and Geotechnical Engineering, Journal Year: 2024, Volume and Issue: 16(6), P. 2172 - 2183

Published: Jan. 5, 2024

In this study, we present a novel nodal integration-based particle finite element method (N-PFEM) designed for the dynamic analysis of saturated soils. Our approach incorporates integration technique into generalised Hellinger-Reissner (HR) variational principle, creating an implicit PFEM formulation. To mitigate volumetric locking issue in low-order elements, employ node-based strain smoothing technique. By discretising field variables at centre cells, achieve over eliminating need sophisticated mapping operations after re-meshing PFEM. We express discretised governing equations as min-max optimisation problem, which is further reformulated standard second-order cone programming (SOCP) problem. Stresses, pore water pressure, and displacements are simultaneously determined using advanced primal-dual interior point method. Consequently, our numerical model offers improved accuracy stresses pressure compared to displacement-based Numerical experiments demonstrate that N-PFEM efficiently captures both transient long-term hydro-mechanical behaviour soils with high accuracy, obviating stabilisation or regularisation techniques commonly employed other approaches. This work holds significant implications development robust accurate tools studying soil dynamics.

Language: Английский

Citations

5
Enhanced THM coupling for anisotropic geomaterials and smoothed-FEM simulation DOI

X. L. Wu,

Qi Zhang, Wei-Qiang Feng

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110087 - 110087

Published: March 1, 2025

Language: Английский

Citations

0
An implicit coupled MPM formulation for static and dynamic simulation of saturated soils based on a hybrid method DOI

Qin-yang Sang,

Yonglin Xiong,

Rongyue Zheng

et al.

Computational Mechanics, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 21, 2024

Language: Английский

Citations

0