【摘要】 用James—Anderson方法,对拉伸载荷下的圆截面杆中局部表面裂纹应力强度因子进行了实验研究。用逐步回归分析得到了表面裂纹最深点和表面点的应力强度因子近似表达式。将所得的实验解和现有的数值解进行了比较,结果表明,在表面裂纹最深点符合得较好。更多还原

【Abstract】 Using James - Anderson’s method, an experimental research on stress intensity factor of round rod tension with surface cracks is carried out.By means of stepwise regression analysis, the approximate expressions forstress intensity factor on the deepest point and the surface point ofsurface crack are obtained. Comparison of experimental data and theavailable numerical solution shows that the results conform fairly wellin the deepest point of the surface crack.更多还原