关于McClintock和Irwin修正

在准脆断情形中,裂纹尖端存在一个微小塑性区.这一塑性区虽然微小.但其影响又不能忽略,因此需要对原有的线弹性渐近场进行校正.F.A.McClintock和G.R.Irwin1]于1965年提出了一个修正理论,并被广泛引用至今.本文指出这一修正结果是错误的,并给出了正确的修正结果.

On the Correction by McCiintock and Irwin

In the case of quasi-brittle fracture, at the crack tip there is a small plastic region whose affection cannot be neglected, Therefore the linear elastic asymptotic fields must be corrected, In 1965 F. A. McClintock and G. R. Irwin presented a correction which since then has been adopted extensively, Here in this paper, it must be pointed out that such correction is wrong, A correct result is given.