Stochastic Multiscale Coupling of Inelastic Processes in Solid Mechanics
Stochastic Multiscale Coupling of Inelastic Processes in Solid Mechanics
复制标题
固体力学中非弹性过程的随机多尺度耦合
DOI:
10.1007/978-3-319-06331-7_9
复制
发表时间:
2014
期刊:
影响因子:
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通讯作者:
A. Ibrahimbegovic
中科院分区:
文献类型:
--
作者:
H. Matthies;A. Ibrahimbegovic
Here we consider the inelastic nonlinear response of heterogeneous materials, possibly undergoing localised failure. We regard the material to be heterogeneous on many scales, but for simplicity we only look at one scale transition. The micro-scale is regarded as incompletely known and hence uncertain, therefore modelled probabilistically. Two alternative approaches are discussed: one for localised regions where a rather detailed micro-description is necessary to capture relevant effects, and the other in domains where it is accurate enough to define phenomenological models of ‘generalised standard materials’ on the macro-scale, which have to be identified via micro-scale computations. Apart from a proper transfer of mechanical quantities across scales, the same has to be achieved for the stochastic part of the model. Several main ingredients of the proposed approaches are discussed in detail, including micro-structure approximation with a structured mesh, random field representation, and Bayesian updating.
DOI:
10.1016/j.jcp.2012.04.044
发表时间:
2012-07
期刊:
J. Comput. Phys.
影响因子:
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作者:
B. Rosic;A. Litvinenko;O. Pajonk;H. Matthies
通讯作者:
B. Rosic;A. Litvinenko;O. Pajonk;H. Matthies
DOI:
10.1016/j.engstruct.2012.12.029
发表时间:
2012-01
期刊:
ArXiv
影响因子:
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作者:
B. Rosic;A. Kucerová;J. Sýkora;O. Pajonk;A. Litvinenko;H. Matthies
通讯作者:
B. Rosic;A. Kucerová;J. Sýkora;O. Pajonk;A. Litvinenko;H. Matthies