CAJ | 학술논문

针对复合材料的分层损伤，在有限元软件ABAQUS中引入了双线性粘结域单元层建立有限元模型，模拟分析了分层的起始以及演化，同时研究了粘结域单元尺寸及粘结域单元和层合板单元损伤退化参数最大值对分析结果的影响，最终选定0.2 mm的粘结域网格单元与损伤退化参数分别为0.98和0.97的粘结域单元与层合板单元，得到了层合板不同位置分层损伤起始及损伤扩展，并通过实验测试验证了模拟结果的准确性。
침대복합재료적분층손상，재유한원연건ABAQUS중인입료쌍선성점결역단원층건립유한원모형，모의분석료분층적기시이급연화，동시연구료점결역단원척촌급점결역단원화층합판단원손상퇴화삼수최대치대분석결과적영향，최종선정0.2 mm적점결역망격단원여손상퇴화삼수분별위0.98화0.97적점결역단원여층합판단원，득도료층합판불동위치분층손상기시급손상확전，병통과실험측시험증료모의결과적준학성。
Aiming at the delamination behavior of composite laminates,bilinear cohesive-zone elements were employed in the commercial code ABAQUS to establish the finite element model to model the onset and progression of inter-ply delamination process, element size and damage max degradation parameter of cohesive-zone elements and laminate element were taken into consideration. Finally 0.2 mm,0.98 and 0.97 respectively is used as element size,damage max degradation parameter of cohesive-zone elements and laminate element. The research gets the onset and progression of delamination process of different positions of laminate. The accuracy of the simulation results is verified by experimental measurement.