三维蠕变裂纹断裂分析的线弹簧边界元方法

An Approach of Linespring Model and BEM to the 3Dimensional Creep Crack

将线弹簧模型与其它一些数值方法相结合，提出了一种新的针对三维埋藏蠕变裂纹的计算模型，使分析过程避开了对裂纹尖端应力、应变场的直接考虑。同时，边界单元法不仅大大简化了计算过程，而且使计算结果仍具有相当的精度。本文还结合相应的一些实验数据进行了三维埋藏蠕变裂纹扩展的计算和预报。

In this paper,a computational model for 3dimensional creep crack growth was proposed with integrating linespring model and some other numerical method,which enables the investigators to avoid the direct analysis of 3dimensional creep crack tip stressstrain field and obtain satisfactorily precise resultsThe computation and prediction of 3dimensional embedded creep crack growth of a certain material was performed on the basis of the new method