摘要
1 引言 在工程结构的失效分析和安全设计中,应力强度因子已成为重要的参数。边界配置法是计算该参数的一种有效数值方法,其突出优点是计算简便,精度较高,特别适合于有限大裂纹体的计算。该方法的关键是选择恰当的应力函数。近年来,作者根据弹性力学的基本理论和不同裂纹问题的特点,提出了一些适当的应力函数。计算了一系列断裂问题的应力强度因子。
A set of complex stress functions is proposed and the boundary collocation method is used to calculate the stress intensity factors for a tube with two external edge cracks. The tube is subjected to the internal pressure or external tensile stress. Numerical results for different cases, such as the different ratios of the internal to external radii and the different ratios of the crack length to the tube wall thickness, are obtained.
出处
《华中理工大学学报》
CSCD
北大核心
1990年第5期153-156,共4页
Journal of Huazhong University of Science and Technology
关键词
筒
裂纹
应力强度因子
边界配置法
Tube
Two edge cracks
Stress intensity factor
Boundary collocation method
