Voronoi Cell Finite Element Study on Particle-Reinforced Composites Containing Interphases Considering Both Interfacial Debonding and Thermal Stress
作者机构：Faculty of Civil Engineering and MechanicsKunming University of Science and TechnologyKunming650000China
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2022年第35卷第6期
页 面：1055-1067页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）]
基 金：Funding was provided by The national Natural Science Foundation of China (Grant No.12062007).
主 题：Voronoi VCFEM Interphase Interfacial debonding Thermal stress
摘 要：This paper derives the complementary energy functional based on the Voronoi element of particle-reinforced composites containing interphases to compute the interfacial debonding and thermal stress.When calculating interfacial debonding stress,it is assumed that the surface force is zero at the interface where debonding occurs,and a new modified complementary energy functional is derived with this boundary condition.When considering the thermal stress due to temperature change,the thermal strain is introduced into the complementary energy functional,and the thermal stress is then calculated.According to the derived formula,a Fortran program named Voronoi cell finite element model(VCFEM)is written.The interfacial debonding and thermal stress is calculated using both VCFEM and the finite element software MARC,and the calculation results are compared.It shows that the calculation results of the VCFEM are roughly comparable to those of the MARC,verifying the effectiveness of the VCFEM.
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