Rapid particle generation from an STL file and related issues in the application of material point methods to complex objects

In this paper, we focus on three issues related to applications of material point methods (MPMs) to objects with complex geometries. They are material point generation, compatibility of material points with a mesh, and sensitivity to mesh orientation. An efficient method of generating material point...

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Vydáno v:Computational particle mechanics Ročník 11; číslo 5; s. 2291 - 2305
Hlavní autoři: Zhang, Duan Z., Perez, Kyle A., Barclay, Paul L., Waters, Jiajia
Médium: Journal Article
Jazyk:angličtina
Vydáno: Cham Springer International Publishing 01.10.2024
Springer Nature
Témata:
Classical and Continuum Physics
complex geometry
Computational Science and Engineering
dual domain material point method
Engineering
local stress difference (LSD) algorithm
MATERIALS SCIENCE
Theoretical and Applied Mechanics
Dual domain material point method
Local stress difference (LSD) algorithm
Complex geometry
ISSN:2196-4378, 2196-4386
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Popis
Shrnutí:In this paper, we focus on three issues related to applications of material point methods (MPMs) to objects with complex geometries. They are material point generation, compatibility of material points with a mesh, and sensitivity to mesh orientation. An efficient method of generating material points from a stereolithography (STL) file is introduced. This material point generation method is independent of the mesh used in MPM calculations. The compatibility between the material points and the mesh is then studied. We also show that the original MPM and the dual domain material point (DDMP) method are sensitive to mesh orientation. These issues are related to the calculation of the internal force and are concerns of the MPMs. They become more prominent when MPMs are applied to complex geometries. Our numerical results show that the recently developed local stress difference (LSD) algorithm (Perez et al. in J Comp Phys 498:112681, 2024) can be used to effectively address them.
Bibliografie:LA-UR-24-26163
89233218CNA000001
USDOE Laboratory Directed Research and Development (LDRD) Program
USDOE National Nuclear Security Administration (NNSA)
ISSN:2196-4378
2196-4386
DOI:10.1007/s40571-024-00813-z