橡胶-钢粘接界面断裂问题非线性有限元分析  

Nonlinear finite element analysis of rubber-steel bonded interface fracture

作　　者：王智宇[1] 王安稳[2] 

机构地区：[1]海军工程大学舰船工程系,武汉430033 [2]海军工程大学理学院,武汉430033

出　　处：《海军工程大学学报》2014年第4期6-9,26,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(10572150);海军工程大学自然科学基金资助项目(HGDQNJJ12033)

摘　　要：为解决橡胶-钢粘接界面断裂非线性有限元计算问题,建立了含初始裂纹的橡胶-钢粘接复合结构有限元模型;用张开位移作为裂纹开裂的判定参数并模拟了裂纹的扩展,计算值与试验值的对比证明了该方法的可行性;计算了开裂前粘接界面的层间应力,分析了开裂前裂纹前沿和沿裂纹扩展方向的层间应力变化情况;用断裂力学中的柔度法计算橡胶-钢复合结构的能量释放率,计算并分析了能量释放率沿裂纹扩展方向的变化情况,并与实验结果进行了对比验证,结果证明:该方法是可行的。In order to solve the nonlinear element calculation problem of rubber-steel bonded interface fractures ,a finite element model of the rubber-steel bonded complex structure with initial cracks is es-tablished .The crack opening displacement is used as the decision parameter of cracks to simulate their expansion .The comparison of the calculated and experimental values proves the method to be feasi-ble .T he interlaminar stresses of bonded interface before cracking are calculated ;the changes of inter-laminar stresses on the crack front and along the crack-growing direction before cracking are analyzed . The flexibility method of fracture mechanics is used to calculate the energy release rate of the rubber-steel bonded complex structure and analyze the changes of energy release rate along the direction of crack growth .The experimental results show that the method is effective .

关 键 词：橡胶-钢 界面断裂 非线性 有限元 

分 类 号：O34[理学—固体力学]