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本文提出了带缺陷的空间板结构的应力强度因子计算方法和有限元程序,适合于空间板、壳结构细部含裂纹构件的断裂分析,包括单一的和全复合型的断裂特性问题。若干计算例子表明:本方法所需单元少且有满意的工程精度。本文最后对油船底部三个带裂纹的基本结构单元二十四种载荷工况进行了分析计算,并得到若干有益的结论。
In this paper, the stress intensity factor calculation method and finite element program of the space plate structure with defects are proposed. The method is suitable for the fracture analysis of cracked components in the space plate and shell structure, including single and fully composite fracture characteristics. Several calculation examples show that this method requires less units and has satisfactory engineering accuracy. In the end, the paper analyzes and calculates twenty-four load conditions of the basic structure units with cracks at the bottom of the tanker and obtains some useful conclusions.