The differences of J-integral between CT specimens with and without loading holes have been compared and analyzed by means of incrementaltheory elastic - plastic finite element calculations.
通过增量理论弹塑性有限元计算，对比分析了带和不带加载孔ct试样J积分之间的差异。
2
Based on the nonlinear, elastic-plastic finite element method theory, the modeling approach of the numerical simulation of incremental sheet metal forming was studied firstly in this project.