Its found that the stress functions corresponding to the mirror point of higher order can be determined from the lower order ones by recurrence, which is easy for computer programing.
In this paper, the lowerorder moments formulae of crack length distribution under given life were derived by means of stochastic point process theory.
运用随机点过程理论导出了求取裂纹扩展随机过程低阶矩的公式。
3
Studies the existence for two-point boundary value problems of two fourth-order nonlinear equations by using the theories of upper and lower solutions.