An incremental elastic-plastic cohesive constitutive model with considering damage  

作　　者：XIA Tong QIAN YiXing XU ShengYao YANG ZhenYu LU ZiXing 

机构地区：[1]Institute of Solid Mechanics,School of Aeronautic Science and Engineering,Beihang University(BUAA),Beijing 100083,China [2]Aircraft&Propulsion Laboratory,Ningbo Institute of Technology(NIT),Beihang University(BUAA),Ningbo 315832,China

出　　处：《Science China(Technological Sciences)》2023年第12期3651-3662,共12页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.11972057,12272021,and 11972058);the National Science and Technology Major Project (Grant No.2017-VII-0003-0096);The support from Super Computing Center ScGrid/CNGrid of CAS。

摘　　要：The interface has a significant influence on the macroscopic mechanical behaviors of composite materials,with interface cracking being a typical failure event.The ability to precisely describe the mechanical behavior of the interface is critical for analyzing the failure of composite materials.Based on plasticity theory and damage mechanics,an elastic-plastic interface constitutive model is developed to simulate the irreversible plastic deformation at the interface under the cyclic loading condition.Furthermore,by incorporating a damage factor in scalar form,the model is able to simulate mixed loading forms(Modes I and II).The influence of interfacial strength and toughness on the overall mechanical properties of unidirectional fiber reinforced composites under transverse loading is studied with this model.The simulation results are consistent with the experimental data in the literature,demonstrating the model's effectiveness.The model can be used to simulate the mechanical behavior of composites with interfaces under cyclic loading,and it is helpful for understanding the plastic behavior and damage accumulation at the interfaces in the composites.

关 键 词：interface cohesive zone model PLASTICITY DAMAGE fiber reinforced composites 

分 类 号：TB33[一般工业技术—材料科学与工程]