Elasto-plastic response of an externally cracked cylinder analyzed by the method of lines

Further results on elasto-plastic response of flawed specimens by the Method of Lines are reported. Numerical results of stresses, displacements, the growth of plastic zone, and the J₁-integral are presented. Computations obtained include that for elastic response and that for elasto-plastic response. The stress intensity factor K₁ is determined by two different approaches: the two-term expansion method and the J₁-K₁ relation. A comparison of K₁ with that recorded in Tada, Paris and Irwin is presented. The range of percentage difference is between 6 and 23, depending upon crack length. A typical run of the computer program on an IBM $\text{370}\text{168}$, using double precision arithmetic, takes about 3 min CPU time and 700k bites of storage.