论文信息 - Effect of Crack Closure Parameter and Negative Triaxiality on Damage Growth in Upsetting Problem

Effect of Crack Closure Parameter and Negative Triaxiality on Damage Growth in Upsetting Problem

A Continuum Damage Mechanics model, that incorporates a crack closure parameter and a cut-off on negative triaxiality, is employed to simulate the damage growth in upsetting problem using the finite element package ABAQUS. Parametric studies are carried out to find the effect of the crack closure parameter and the cut-off. It is shown that the correct location of the maximum damage in upsetting problem (i.e., the location reported in the experimental literature) is predicted only if these parameters are incorporated.

Manoj Kumar | P. M. Dixit | P. M. Dixit | Manoj Kumar

[1] I. French,et al. The influence of hydrostatic pressure on the tensile deformation and fracture of copper , 1975 .

[2] J. Lemaître. A CONTINUOUS DAMAGE MECHANICS MODEL FOR DUCTILE FRACTURE , 1985 .

[3] Dallas N. Little,et al. A continuum damage mechanics framework for modeling micro-damage healing , 2012 .

[4] P. W. Bridgman. Studies in large plastic flow and fracture : with special emphasis on the effects of hydrostatic pressure , 1964 .

[5] H. A. Kuhn,et al. Strain instability and fracture at the surface of upset cylinders , 1971 .

[6] P. M. Dixit,et al. Ductile fracture prediction in axisymmetric upsetting using continuum damage mechanics , 2003 .

[7] Y. Im,et al. Prediction of ductile fracture in cold forging of aluminum alloy , 1999 .

[8] Tomasz Wierzbicki,et al. On the cut-off value of negative triaxiality for fracture , 2005 .

[9] H. Kuhn,et al. Fracture in cold upset forging -a criterion and model , 1973 .

[10] Percy Williams Bridgman,et al. Studies in large plastic flow and fracture , 1964 .

[11] Shiro Kobayashi,et al. Deformation Characteristics and Ductile Fracture of 1040 Steel in Simple Upsetting of Solid Cylinders and Rings , 1970 .

[12] Manoj Kumar,et al. A nonlinear ductile damage growth law , 2015 .

[13] Pablo A. Muñoz-Rojas,et al. Damage evolution and thermal coupled effects in inelastic solids , 2011 .