科技报告详细信息
A coarsening method for linear peridynamics. | |
Silling, Stewart Andrew | |
关键词: BODY; DEFECTS; ELASTICITY; LENGTH; MATERIALS; WELLS; | |
DOI : 10.2172/983676 RP-ID : SAND2010-3303 PID : OSTI ID: 983676 Others : TRN: US201014%%1752 |
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学科分类:材料科学(综合) | |
美国|英语 | |
来源: SciTech Connect | |
【 摘 要 】
A method is obtained for deriving peridynamic material models for a sequence of increasingly coarsened descriptions of a body. The starting point is a known detailed, small scale linearized state-based description. Each successively coarsened model excludes some of the aterial present in the previous model, and the length scale increases accordingly. This excluded material, while not present explicitly in the coarsened model, is nevertheless taken into account implicitly through its effect on the forces in the coarsened material. Numerical examples emonstrate that the method accurately reproduces the effective elastic properties of a composite as well as the effect of a small defect in a homogeneous medium.【 预 览 】
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