含中心裂纹有限加筋板应力强度因子的计算精度评估

文章首先对含中心裂纹有限加筋板应力强度因子的计算结果进行了对比分析,然后通过对结点位移的解析解和有限单元法中的计算表达式的分析,提出一个用于评估应力强度因子计算精度的参数,并通过算例和文献结论分析说明该参数是一个计算简便的、有工程实际意义的参数.可以用于加筋板应力强度因子的计算精度评估.

Accuracy evaluation of stress intensity factor about stiffened plate with a central crack

The computed values of stress intensity factor about stiffened plate with a central crack are firstly given in references.Then on the basis of analytic expression and numerical expression about node displacement in finite element method,a parameter used to evaluate the accuracy of stress intensity factor is proposed.At the same time,an example is given.It shows the parameter is useful in actual engineering design.Finally,the usage how to use the parameter is discussed.