Gurson model과 shear failure model을 이용한 파단 해석

초록

Two kinds of fallure models, that is, Gurson model and shear failure model were used for the finite element laly 잊s d a stple lnslie specimen and axial compression of a fractu P e tube with initial saw-cuts It was observed that the two material modeis can predict opposite fracture behaviors for the two spectmens The shear fallure model anticipates earlier tallure than Gurson model in the simple tension, but it gives delayed: xk lowl in le mbe splitting lt seems that materlal parameter values need account for the effects of stress state generated In the considered problems Expertmental works will be necessary for the dectsion or verittcatton of the numerical parameters used in ths paper if a ngore accurate mater, al models are obtalnel a will-helpful for the design of energy absorbing fracture tubes of rallway vehicies