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<p>To accurately characterize the damage state of C19210 copper alloy during numerical simulations of plastic deformation, tensile tests have been used to determine that the fracture mode of the alloy was ductile fracture. On this basis, six ductile fracture criteria (Max Principle Stress, Freudenthal, Cockcroft–Latham, Normalized Cockcroft–Latham, Ayada, Oyane) for numerical simulation of plastic deformation were selected for research. Combined with numerical simulation, the fracture thresholds of materials under these six different criteria were calculated. Based on variance analysis, it was found that the anisotropy and strain rate of the material have no significant impact on the calculated fracture threshold. The Oyane ductile fracture criterion demonstrated the highest accuracy among the criteria evaluated, with a fracture threshold of 0.4815.</p>

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Study on the Ductile Fracture Criterion of C19210 Copper Alloy for Profiled Strips

  • 期刊论文

  • 发表日期：

    2025年1月21日

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  • Wei Song,
  • Jun Cai,
  • Zhengkang Zhu,
  • Bing Zhang,
  • Kuaishe Wang,
  • Yan Yang,
  • Yu Fan

摘要

To accurately characterize the damage state of C19210 copper alloy during numerical simulations of plastic deformation, tensile tests have been used to determine that the fracture mode of the alloy was ductile fracture. On this basis, six ductile fracture criteria (Max Principle Stress, Freudenthal, Cockcroft–Latham, Normalized Cockcroft–Latham, Ayada, Oyane) for numerical simulation of plastic deformation were selected for research. Combined with numerical simulation, the fracture thresholds of materials under these six different criteria were calculated. Based on variance analysis, it was found that the anisotropy and strain rate of the material have no significant impact on the calculated fracture threshold. The Oyane ductile fracture criterion demonstrated the highest accuracy among the criteria evaluated, with a fracture threshold of 0.4815.