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Prediction of ductile fracture in axisymmetric tension by void coalescence

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Abstract

Fracture strains are predicted for ductile materials undergoing void growth and coalescence. The calculation scheme is based on Gurson–Tvergaard yield function and its associated flow rule. Fracture condition is identified by vanishing stress-carrying capacity of the material. The plastic flow parameters are all determined from experimental evidences for a variety of alloys. Comparison among predicted fracture strains and experimental ones is given for a wide range of conventional and superplastic materials as well as powder compacts. Finally an approximate fracture criterion is proposed.

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  1. Department of Mechanical Design and Production Engineering, Cairo University, Giza, Egypt

    A.R. Ragab

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Ragab, A. Prediction of ductile fracture in axisymmetric tension by void coalescence. International Journal of Fracture 105, 391–409 (2000). https://doi.org/10.1023/A:1007640111739

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