Mesh and timestep sensitivity of fracture from thermal strains using peridynamics implemented in Abaqus
Mesh and timestep sensitivity of fracture from thermal strains using peridynamics implemented in Abaqus
复制标题
使用 Abaqus 中实现的近场动力学计算热应变断裂的网格和时间步长敏感性
DOI:
10.1016/j.cma.2013.05.001
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发表时间:
2013
影响因子:
7.2
通讯作者:
Beckmann R
中科院分区:
文献类型:
--
作者:
Beckmann R
This paper investigates how a bi-material strip, modelled using bond-based peridynamics implemented into the finite element (FE) code Abaqus/Standard, using truss elements, delaminates when subjected to regular uniform temperature changes. It has been found that for both heating and cooling, a crack grows inwards along the interface, which separates the two layers completely. In both cases, microcracks also form perpendicular to the interface, which adapt to loads by either arresting or curving. The crack patterns appear unaffected by mesh coarseness in a δ-convergence test, except when cracks merge due to lack of resolution. However, changing the length of the implicit timestep used, and therefore the induced thermal strain per step, strongly affects the number and distribution of microcracks, which vanish completely for very small timesteps. A simulated thermal shock yielded more evenly spaced, longer microcracks due to the stresses built up during the thermal shock.
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DOI:
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发表时间:
1969
期刊:
影响因子:
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作者:
D. Edelen
通讯作者:
D. Edelen
DOI:
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发表时间:
1969
期刊:
影响因子:
--
作者:
D. Edelen
通讯作者:
D. Edelen
DOI:
10.1109/ectc.2010.5490851
发表时间:
2010
期刊:
2010 Proceedings 60th Electronic Components and Technology Conference (ECTC)
影响因子:
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作者:
A. Agwai;I. Guven;E. Madenci
通讯作者:
E. Madenci
DOI:
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发表时间:
1969
期刊:
影响因子:
--
作者:
D. Edelen
通讯作者:
D. Edelen
DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
D. Edelen
通讯作者:
D. Edelen