摘要
介绍了一种由拉剪试验结合有限元计算得到界面剪切内聚力模型的方法,并从能量释放率的角度验证了该方法的可行性。通过树脂混凝土/钢粘接试样的单侧拉剪试验,得到粘接界面的载荷-加载位移关系图,基于双线性内聚力剪切模型对受拉剪过程的分析得到界面内聚力模型的特征错动位移和最大错动位移的比值,再结合有限元模拟计算拉剪试验过程,得到界面内聚力模型的最大应力和特征错动位移,最后比较了拉剪试验的能量释放率和计算得到的能量释放率,两者相对误差在10%以内,认为计算内聚力的方法是可行的。
In this paper,a method of obtaining the interface shear cohesion model by the pull shear test combined with the finite element method is presented,and the feasibility of the method is verified from the energy release rate.The load-loading displacement diagram of the interface was obtained by the uniaxial shear test of the resin/concrete bonded specimen.Based on the bilinear cohesive shear model,the characteristic of the interfacial cohesion model was obtained by analyzing the shear process.The maximum stress and the characteristic displacement of the interface cohesion model are obtained by the finite element simulation.Finally,the energy release rate and the calculated energy release of the shear test are compared.The rate,the relative error between the two is within 10%,suggesting that the method of calculating cohesion is feasible.
出处
《玻璃钢／复合材料》
CSCD
北大核心
2017年第8期30-35,共6页
Fiber Reinforced Plastics/Composites
关键词
复合材料
内聚力
界面
树脂混凝土
有限元
composites
cohesive zone model
interface
resin concrete
finite element
