The Development of the Material Point Method for Simulating Nonlocal Failure Evolution Involved in Multi-phase Interactions

2019 ◽  
pp. 21-24
Author(s):  
Zhen Chen
Keyword(s):  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Failure Evolution ◽  
Multi Phase

Recent Advances in Simulating Failure Evolution with the Material Point Method

2015 ◽  
Vol 784 ◽  
pp. 193-199
Author(s):  
Zhen Chen ◽  
Xiong Zhang
Keyword(s):  
Failure Modes ◽  
Computational Cost ◽  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Damage Models ◽  
Recent Advances ◽  
Failure Evolution ◽  
Discontinuous Bifurcation ◽  
Multi Phase

To predict a complete process of failure evolution, discontinuous bifurcation analysis has been performed to link elastoplasticity and damage models with decohesion models. To simulate multi-phase interactions involving failure evolution, the Material Point Method (MPM) has been developed to discretize localized large deformations and the transition from continuous to discontinuous failure modes. In a recent study for the Sandia National Laboratories (SNL) challenge, the decohesion modeling is improved by making the failure mode adjustable and by replacing the critical normal and tangential decohesion strengths with the tensile and shear peak strengths, in order to predict the cracking path in a complex configuration with the least computational cost,. It is found that there is a transition between different failure modes along the cracking path, which depends on the stress distribution around the path due to the nonlocal nature of failure evolution. Representative examples will be used to demonstrate the recent advances in simulating failure evolution with the MPM.

scholarly journals A Hybrid Material Point Method for Frictional Contact with Diverse Materials

2019 ◽  
Vol 2 (2) ◽  
pp. 1-24 ◽  
Author(s):  
Xuchen Han ◽  
Theodore F. Gast ◽  
Qi Guo ◽  
Stephanie Wang ◽  
Chenfanfu Jiang ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Frictional Contact ◽  
Material Point Method ◽  
Material Point ◽  
Point Method

Three-dimensional face stability analysis of shallow tunnels using numerical limit analysis and material point method

2021 ◽  
Vol 112 ◽  
pp. 103904
Author(s):  
Fabricio Fernández ◽  
Jhonatan E.G. Rojas ◽  
Eurípedes A. Vargas ◽  
Raquel Q. Velloso ◽  
Daniel Dias
Keyword(s):  
Stability Analysis ◽  
Limit Analysis ◽  
Three Dimensional ◽  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Face Stability ◽  
Shallow Tunnels ◽  
Dimensional Face

A moving least squares material point method with displacement discontinuity and two-way rigid body coupling

2018 ◽  
Vol 37 (4) ◽  
pp. 1-14 ◽  
Author(s):  
Yuanming Hu ◽  
Yu Fang ◽  
Ziheng Ge ◽  
Ziyin Qu ◽  
Yixin Zhu ◽  
...  
Keyword(s):  
Rigid Body ◽  
Least Squares ◽  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Displacement Discontinuity ◽  
Moving Least Squares

scholarly journals Dam Breach Simulation with the Material Point Method

Computation ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 8
Author(s):  
Chendi Cao ◽  
Mitchell Neilsen
Keyword(s):  
Material Point Method ◽  
Mixture Theory ◽  
Material Point ◽  
Point Method ◽  
Internal Erosion ◽  
Dam Breach ◽  
New Model ◽  
Hencky Strain ◽  
The Impact ◽  
Soil And Water

Dam embankment breaches caused by overtopping or internal erosion can impact both life and property downstream. It is important to accurately predict the amount of erosion, peak discharge, and the resulting downstream flow. This paper presents a new model based on the material point method to simulate soil and water interaction and predict failure rate parameters. The model assumes that the dam consists of a homogeneous embankment constructed with cohesive soil, and water inflow is defined by a hydrograph using other readily available reach routing software. The model uses continuum mixture theory to describe each phase where each species individually obeys the conservation of mass and momentum. A two-grid material point method is used to discretize the governing equations. The Drucker–Prager plastic flow model, combined with a Hencky strain-based hyperelasticity model, is used to compute soil stress. Water is modeled as a weakly compressible fluid. Analysis of the model demonstrates the efficacy of our approach for existing examples of overtopping dam breach, dam failures, and collisions. Simulation results from our model are compared with a physical-based breach model, WinDAM C. The new model can capture water and soil interaction at a finer granularity than WinDAM C. The new model gradually removes the granular material during the breach process. The impact of material properties on the dam breach process is also analyzed.

v-p material point method for weakly compressible problems

2018 ◽  
Vol 176 ◽  
pp. 170-181 ◽  
Author(s):  
Zhen-Peng Chen ◽  
Xiong Zhang ◽  
Kam Yim Sze ◽  
Lei Kan ◽  
Xin-Ming Qiu
Keyword(s):  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Weakly Compressible

Computational modeling of multicellular constructs with the material point method

2006 ◽  
Vol 39 (11) ◽  
pp. 2074-2086 ◽  
Author(s):  
James E. Guilkey ◽  
James B. Hoying ◽  
Jeffrey A. Weiss
Keyword(s):  
Computational Modeling ◽  
Material Point Method ◽  
Material Point ◽  
Point Method
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