堵孔板内的应力释放孔对应力分布规律影响的研究

堵孔板外围的封闭焊缝由于受到较大的约束，因此会在焊缝和堵孔板内产生很大的内应力。研究了结构补强中的由堵孔板封闭焊缝引起的应力的分布规律，并对在堵孔板中开设应力释放孔以减小焊缝处应力的规律进行了研究。

Investigation About the Influence of Stress-free Hole in the Blind Patch on Stress Distribution

For the closed welding seams are constrained,there are extraordinary internal stresses in the welding seams and the blind patch.In this paper,the laws of stress distribution in the blind patch arising from the closed welding seams in structure reinforcement are analyzed.The authors also research the rules of opening stress free hole in the blind patch,which is advantageous to lessening the internal stresses in the blind patch.