摘要
提出了一种预测复合材料单搭接粘结节点在复合材料本体和粘结界面上破坏的方法。该方法采用了粘结剂和分层破坏判断的一个完全弹塑性模型,采用有限元方法和本文方法进行破坏预测。预测结果显示:破坏模式和强度都与各种粘结方法和参数下进行的节点模型试验结果吻合很好。基于数值分析,建立最佳节点强度条件,并提出一种新的提高节点强度的方法。验证结果表明:该方法可显著提高节点强度。
A methodology is presented for the failure prediction of the composite Single lap bonded joints considering both the composite adherend and the bondline failures. An elastic-perfectly plastic model of the adhesive and a delamination failure criterion were used in the methodology. The failure predictions using the finite element analysis and the proposed methodology were performed. The failure prediction results such as failure mode and strength showed very good agreements with the test results for the joint specimens with various bonding methods and parameters. Based on the numerical investigation, the optimal joint strength condition was found and a new joint strength improvement technique was suggested. The suggested technique was verified to have a significant effect on the joint strength im- provement.
出处
《钢结构》
2008年第7期85-85,共1页
Steel Construction
关键词
复合材料粘结节点
破坏预测
粘结破坏
单搭接
Composite bonded joints
Failure prediction
Adhesive failure
Single lap
