Statistically Equivalent Representative Volume Elements for Unidirectional Composite Microstructures: Part II - With Interfacial Debonding
Statistically Equivalent Representative Volume Elements for Unidirectional Composite Microstructures: Part II - With Interfacial Debonding
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单向复合微结构的统计等效代表性体积单元：第二部分 - 界面脱粘
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Somnath Ghosh
中科院分区：
文献类型：
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作者：
Shriram Swaminathan;Somnath Ghosh
在无损伤微结构研究的后续工作中，针对以界面脱粘形式发生损伤引发和传播的纤维增强微结构，提出了评估统计等效代表体积元（SERVE）的方法。微结构分析使用Voronoi单元有限元模型（VCFEM），其中的接口使用双线性内聚区法建模。正如第一篇文章中介绍的那样，提出了一种统计和计算工具的组合，以捕捉随着负载增加而变化的SERVE的性质。通过数值模拟研究的有效性的替代定义和方法的表征损伤的微观结构。
In this sequel to the study on microstructures without damage, methods for evaluating the statistically equivalent representative volume element (SERVE) are proposed for fiber-reinforced microstructures undergoing initiation and propagation of damage in the form of interfacial debonding. The microstructural analysis is executed using the Voronoi cell finite element model (VCFEM) in which the interface is modeled using a bilinear cohesive zone law. As introduced in the first article, a combination of statistical and computational tools is proposed to capture the evolving nature of the SERVE with increased loading. The effectiveness of alternative definitions and methods of characterizing the damaging microstructure is examined through numerical simulations.