计算裂纹柱Saint-Venant弯曲的弯曲中心和应力强度因子方法

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Method to Calculate Bending Center and Stress Intensity Factors of Cracked Cylinder Under Saint-Venant Bending

1.
Department of Engineering Mechanics, Shanghai Jiaotong University, Shanghai 200030, P R China;
2.
Agricultural Engineering College, Nanjing Agricultural University, Nanjing 210032, P R China

摘要: 使用单裂纹解及调和函数的常规解,裂纹柱受横向力作用而引起的Saint-Venant弯曲问题,被归为解两组积分方程,并获得了一般解。在此基础上,对横截面不为薄壁但扭转刚度很小的裂纹柱,提出了一种计算弯曲中心和应力强度因子的方法,给出了一些数值算例。
- 裂纹柱 /
- Saint-Venant弯曲 /
- 弯曲中心 /
- 应力强度因子 /
- 积分方程方法
Abstract: Using the single crack solution and the regular solution of plane harmonic function,the problem of Saint-Venant bending of a cracked cylinder by a transverse force was reduced to solving two sets of integral equations and its general solution was then obtained.Based on the obtained solution,a method to calculate the bending center and the stress intensity factors of the cracked cylinger whose cross section is not thin-walled,but of small torsion rigidity is proposed.Some numerical examples are given.
- cracked cylinger /
- Saint-Venant bending /
- bending center /
- stress intensity factors /
- integral equation method

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