压缩性
有限元法
变形(气象学)
材料科学
压缩(物理)
过程(计算)
有限应变理论
机械
几何学
结构工程
复合材料
计算机科学
数学
工程类
物理
操作系统
作者
Johannes Dittmann,Andreas Dietzel,Markus Böl
标识
DOI:10.1016/j.jmbbm.2017.07.037
摘要
The present study focused on the material characterisation of porcine oocytes by experiments combined with an inverse finite-element method (iFEM) approach. In doing so, two different deformation states, compression and indentation, were realised to enable the validation of the numerical model. In addition to classical force-strain relations, geometrical information on the oocyte's surface and volume changes during deformation were collected. These data reveal the typical exponential force-strain behaviour and the highly compressible behaviour of the zona pellucida, imparting overall compressibility to the entire cell. Both force-strain characteristics and geometrical information, along with different combinations of them, were used within the iFEM to identify associated material parameters. As suspected, the identified material parameters show a strong dependence on the information (force-strain relation and/or geometrical information) used in the identification process. Finally, forward finite-element calculations were applied, which verified the quality of the obtained material parameters.
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