摘要
本文对内部出现在任意位置的纵向穿透的直线裂纹,在力与裂纹平行时的弯曲问题,用复变函效方法进行了讨论,得到了位移分量、应力分量和应力强度因子用级数表示的表达式,给出了计算应力强度因子的近似式。附表中还列出了大量的应力强度因子之值。与精确值相比,近似式给出好的近似,在很大的范围内,其相对误差的绝对值远小于或小于1％,因而可用于实际工程计算。
Using the complex variable methods, the authors deal with the bending problems of a circular cylinder, containing an internal longitudinal linear crack at any position under an acting force parallel to the crack, obtain the general forms of the displacement components, the stress components and the stress-intensity factors, expressed in terms of series, give appoximate formulas for calculating the stress-intensity factors and presents a great number of values of stress-intensity factors in table. By comparing the accurate values, the approximate formulas give good approximation, its absolute values of the relative errors are smaller or far smaller than 10％in a wide. range and then they may be used in practical engineering calculation.
出处
《洛阳工学院学报》
CAS
1992年第4期1-10,共10页
Journal of Luoyang Institute of Technology
关键词
弯曲
圆柱体
应力强度因子
裂纹
Bending Linear elastic fracture mechanics Stresses Strength
