Damage Material Parameters 16mnr Steel Fracture Impact Studies

Ductile tearing of metallic materials involves void nucleation and void growth to coalescence in proportions depending on the system matrix-particle. Much is known about the mechanisms accompanying nucleation of voids on second-phase particles,a phenomenological description of micro-void nucleation,growth and coalescence, as a whole, according to Gurson and Needleman and Tvergaard, is widely used to analyse ductile fracture in various cracked specimens.Based on ABAQUS FEM softwave analyse the effect of damage factor fN and q1, both the experimental and theoretical sides , mechanical behavior involving ductile damage near the crack tip and the reason for its difference between elastic-plastic behavior in steel 16MnR will be discussed, and the three criterion for cleavage fracture by J.H CHENG and Z.G WANG under damage effecting will be study in this article.