失效准则和非线性对复合材料层合板螺栓连接失效强度的影响  

The effects of criterions and nonlinear on the failure strength for bolted joint in composite laminates

作　　者：徐红炉[1] 王富生[1] 岳珠峰[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710072

出　　处：《强度与环境》2008年第3期35-42,共8页Structure & Environment Engineering

基　　金：国家自然科学基金(50375124);科技工业技术基础科研项目(Z142006B001)

摘　　要：建立二维复合材料螺栓连接累积损伤有限元模型。考虑接触关系,剪切非线性和材料刚度降低,针对三种不同的失效准则编制相应的损伤程序,对复合材料层合板螺栓连接件强度进行数值计算并与实验结果进行对比。研究结果表明,剪切非线性分析更合理,混合准则计算结果与实验结果吻合较好。A 2D finite-element model was developed for bolted joint in composite laminates with accumulative damage. Taking into account the contact, a nonlinear shear stress-strain relationship and degradation rules, three different failure criterions are conducted. The user subroutines have been programmed according to different failure criterions to evaluate the beating strength of bolted composite joints. The results of the three different criterions are to be analyzed and compared with experimental data. It appears that the non-linear analysis is fit for this laminate. Better agreements between experimental data and numerical result are observed with the mixed criterion.

关 键 词：复合材料 螺栓连接 破坏准则 非线性 

分 类 号：TB330.1[一般工业技术—材料科学与工程]