Damage regularisation with inertia gradients
Damage regularisation with inertia gradients
复制标题
通过惯性梯度进行损伤正则化
DOI:
10.1016/j.euromechsol.2011.08.005
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Bennett T
中科院分区:
文献类型:
--
作者:
Bennett T
A gradient enhanced model is formulated which simulates micro-structurally induced wave dispersion and is capable of achieving mesh objective results when modelling strain-softening materials. Length scale parameters are introduced to incorporate both micro-inertial effects and strain smoothing. The model is formulated such that all the gradient enhancement terms are contained within the kinetic energy functional, whilst all non-linear terms are linked to the strain energy functional. In addition, discretisation of the governing equations is performed in a manner such that only C0-continuity is required and is symmetric in the elastic range. Dispersion analysis is performed to show the correct format that a constitutive model must conform to in order that regularisation of strain-softening material models will occur. This dispersion analysis is then used to explore how the two length scales may influence the width of the zone in which strain localisation takes place. The efficacy of the model in simulating strain-softening behaviour in a mesh objective manner and the effects of wave dispersion on damage initiation and accumulation are demonstrated in numerical examples.
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影响因子:
4.1
作者:
T. Bennett;H. Askes
通讯作者:
T. Bennett;H. Askes
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
A. Metrikine;H. Askes
通讯作者:
H. Askes
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
A. Rodríguez‐Ferran;T. Bennett;H. Askes;E. Tamayo‐Mas
通讯作者:
E. Tamayo‐Mas
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
I. Gitman;H. Askes;E. Aifantis
通讯作者:
E. Aifantis
影响因子:
6
作者:
Gutkin, MY;Aifantis, EC
通讯作者:
Aifantis, EC