DP-MPM: Domain partitioning material point method for evolving multi-body thermal-mechanical contacts during dynamic fracture and fragmentation
文献类型：期刊论文
| 作者 | Xiao, Mian; Liu CQ(刘传奇); Sun, WaiChing |
| 刊名 | COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
 |
| 出版日期 | 2021-11 |
| 卷号 | 385页码:114063 |
| ISSN号 | 0045-7825 |
| 关键词 | Material point method Multi-body contact Fragmentation Brittle fracture Thermomechanics |
| DOI | 10.1016/j.cma.2021.114063 |
| 英文摘要 | We propose a material point method (MPM) to model the evolving multi-body contacts due to crack growth and fragmentation of thermo-elastic bodies. By representing particle interface with an implicit function, we adopt the gradient partition techniques introduced by Homel and Herbold (2017) to identify the separation between a pair of distinct material surfaces. This treatment allows us to replicate the frictional heating of the evolving interfaces and predict the energy dissipation more precisely in the fragmentation process. By storing the temperature at material points, the resultant MPM model captures the thermal advection-diffusion in a Lagrangian frame during the fragmentation, which in return affects the structural heating and dissipation across the frictional interfaces. The resultant model is capable of replicating the crack growth and fragmentation without requiring dynamic adaptation of data structures or insertion of interface elements. A staggered algorithm is adopted to integrate the displacement and temperature sequentially. Numerical experiments are employed to validate the diffusion between the thermal contact, the multi-body contact interactions and demonstrate how these thermo-mechanical processes affect the path-dependent behaviors of the multi-body systems. (C) 2021 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics |
| 分类号 | 一类 |
| 语种 | 英语 |
| WOS记录号 | WOS:000691816700005 |
| 资助机构 | Dynamic Materials and Interactions Program from the Air Force Office of Scientific Research, United States [FA9550-17-1-0169, FA9550-19-1-0318] ; Earth Materials and Processes program from the US Army Research Office [W911NF-18-2-0306] ; Presidential Fellowship of Columbia University, United States ; Columbia University, United States [FA9550-19-1-0318] |
| 其他责任者 | Liu, CQ (corresponding author), Chinese Acad Sci Beijing, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100090, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90250]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci Beijing, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100090, Peoples R China 2.Columbia Univ, Dept Civil Engn & Engn Mech, 614 SW Mudd, New York, NY 10027 USA |
| 推荐引用方式 GB/T 7714 | Xiao, Mian,Liu CQ,Sun, WaiChing. DP-MPM: Domain partitioning material point method for evolving multi-body thermal-mechanical contacts during dynamic fracture and fragmentation[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2021,385:114063. |
| APA | Xiao, Mian,刘传奇,&Sun, WaiChing.(2021).DP-MPM: Domain partitioning material point method for evolving multi-body thermal-mechanical contacts during dynamic fracture and fragmentation.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,385,114063. |
| MLA | Xiao, Mian,et al."DP-MPM: Domain partitioning material point method for evolving multi-body thermal-mechanical contacts during dynamic fracture and fragmentation".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 385(2021):114063. |
入库方式： OAI收割
来源：力学研究所
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