Micromechanical and macromechanical modelling of foams: Identification of Cosserat parameters
Micromechanical and macromechanical modelling of foams: Identification of Cosserat parameters
复制标题
泡沫的微观力学和宏观力学建模：Cosserat 参数的识别
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Geringer
中科院分区：
文献类型：
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作者：
S. Diebels;A. Geringer
经典的连续介质模型不能描述多孔材料的力学行为。为了模拟这些材料的尺寸相关的力学性能，可以使用扩展的连续介质模型，例如微极方法。参考数据是从在人造开孔泡沫样品上进行的虚拟实验中提取的。在适当的Cosserat参数设置下，可以用扩展的连续统方法在宏观水平上描述详细的微观结构模型。将参数辨识任务定义为最小化任务，利用进化计算框架进行求解。
The classical continuum model does not describe the mechanical behaviour of cellular materials. To model the size‐dependent mechanical properties of these materials, the extended continuum models such as the micropolar approach can be used. The reference data is extracted from the virtual experiments performed on an artificial open‐cell foam specimens. With the proper set of the Cosserat parameters the detailed microstructural model can be described on the macroscopic level using the extended continuum approach. The parameter identification task is defined as a minimisation task, which is solved using the evolutionary computational framework.