Cite this article:
. . Acta Metall Sin, 2007, 43(10): 1037-1042 .
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Abstract The ductile damage and fracture in metallic materials under complex stress state is one of most difficult problems in metal forming. Tensile test, compression test, torsion test, and fine-blanking test of 45 steel were performed, and the stress triaxiality and ductile damage of each test are analyzed with FEM. Furthermore, three ductile damage mechanisms were proposed, which are shear damage without the influence of voids, shear-form void damage and tensile-form void damage. Based on above discovery, a new ductile damage model based on void growth was proposed, which can predict the occurrences in tension and fine-blanking of metallic materials accurately.
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Received: 26 January 2007
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