Application of Complete Gurson Model for Prediction of Ductile Fracture in Welded Steel Joints


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Ductile fracture process includes three stages: void nucleation, their growth and coalescence. The voids nucleate due to the fracture or separation of non-metallic inclusions and secondary-phase particles from the material matrix. Micromechanical models based on the Gurson plastic flow criterion are often used for analysis of ductile fracture. They consider the material as a porous medium in which the effect of voids on the stress-strain state and plastic flow cannot be neglected. Another important property of the Gurson criterion is that the hydrostatic stress component influences the plastic flow of the material.



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B. Međo et al., "Application of Complete Gurson Model for Prediction of Ductile Fracture in Welded Steel Joints", Key Engineering Materials, Vol. 399, pp. 13-20, 2009

Online since:

October 2008




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