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 int...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.展开更多
基金Funding was provided by The national Natural Science Foundation of China (Grant No.12062007).
文摘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.
