CAJ | 학술논문

应用断裂力学的Pairs公式，针对滚切剪刀刃的受力特点和实际的裂纹状况，基于前人已经得出的实验数据和研究成果，得出滚切剪的裂纹长度随工作次数的变化情况和裂纹长度-受力次数曲线，进而得出滚切剪的使用寿命。并以某厂滚切剪刀刃的裂纹及使用时间的实际数据为例，验证了运算方法的合理性。
응용단렬역학적Pairs공식，침대곤절전도인적수력특점화실제적렬문상황，기우전인이경득출적실험수거화연구성과，득출곤절전적렬문장도수공작차수적변화정황화렬문장도-수력차수곡선，진이득출곤절전적사용수명。병이모엄곤절전도인적렬문급사용시간적실제수거위례，험증료운산방법적합이성。
According to the mechanical characteristics of the rolling shear and the actual condition of crack ,based on the Paris formu-la of fracture mechanics and the experimental data ,a curve of the length of crack and the operation cycles is drew ,and then the life of rolling shear is obtained .The rationality of the formula is concluded by comparing the length of the crack and the operation cycles of a rolling shear in a factory .