论文部分内容阅读
The line-spring model of surface cracks is applied to the fully plastic analysis of cornercracks at a hole in a plate.The generalized fully plastic constitutive relations and the fully plastic J-in-tegral,as well as its coefficients in polynomial expressions are given.The model obtained is incorpo-rated into a finite element program.The corner cracks at a hole in a plate subjected pure tensions arecalculated by the present model.The fully plastic J-integral is then estimated.The results obtainedshow that the line-spring model is effective for the analysis of corner cracks.The influence of thecrack depth and the hardening exponent on the fully plastic J-integral is also discussed.
The line-spring model of surface cracks is applied to the fully plastic analysis of cornercracks at a hole in a plate. The generalized fully plastic constitutive relations and the fully plastic J-in-tegral, as well as its coefficients in polynomial expressions are The model obtained is incorpo-rated into a finite element program. The corner cracks at a hole in a plate with pure tensions arecalculated by the present model. The fully plastic J-integral is then estimated. The results obtained show that the line-spring model is effective for the analysis of corner cracks. The influence of thecrack depth and the hardening exponent on the fully plastic J-integral is also discussed.