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MPM-driven Dynamic Desiccation Cracking and Curling in Unsaturated Soils
  • +4
  • Zaili Tu,
  • Chen Peng,
  • Chen Li,
  • Chenhui Wang,
  • Long Liu,
  • Changbo Wang,
  • Hong Qin
Zaili Tu
East China Normal University School of Computer Science and Technology
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Chen Peng
East China Normal University School of Computer Science and Technology
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Chen Li
East China Normal University School of Computer Science and Technology

Corresponding Author:[email protected]

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Chenhui Wang
East China Normal University School of Computer Science and Technology
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Long Liu
East China Normal University School of Computer Science and Technology
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Changbo Wang
East China Normal University School of Computer Science and Technology
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Hong Qin
Stony Brook University
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Abstract

Desiccation cracking of soil-like materials is a common phenomenon in natural dry environment, however, it remains a challenge to model and simulate complicated multi-physical processes inside the porous structure. With the goal of tracking such physical evolution accurately, we propose an MPM based method to simulate volumetric shrinkage and crack during moisture diffusion. At the physical level, we introduce Richards equations to evolve the dynamic moisture field to model evaporation and diffusion in unsaturated soils, with which a elastoplastic model is established to simulate strength changes and volumetric shrinkage via a novel saturation-based hardening strategy during plastic treatment. At the algorithmic level, we develop an MPM-fashion numerical solver for the proposed physical model and achieve stable yet efficient simulation towards delicate deformation and fracture. At the geometric level, we propose a correlating stretching criteria and a saturation-aware extrapolation scheme to extend existing surface reconstruction for MPM, producing visual compelling soil appearance. Finally, we manifest realistic simulation results based on the proposed method with several challenging scenarios, which demonstrates usability and efficiency of our method.
29 Apr 2023Submitted to Computer Animation and Virtual Worlds
29 Apr 2023Submission Checks Completed
29 Apr 2023Assigned to Editor
01 May 2023Review(s) Completed, Editorial Evaluation Pending
01 May 2023Editorial Decision: Accept