金属材料在非对称非比例应变路径循环加载下的塑性行为

Plastic Deformation Behavior of Metallic Materials under Monsymmetric Nonproportional Cyclic Loadings

本文对42CrMoA高强度合金钢进行了具有不同平均应变的非比例拉压—扭转循环加载试验,研究平均应变对应力响应的影响。试验结果表明,在非对称应变循环下,材料的应力响应与平均应变无关。因此,在循环塑性本构模型的建立中,应该考虑这一试验现象。

Three nonsymmetric nonproportional cyclic tension- torsion tests are performed with different mean strains on 42CrMoA alloy steel. The results show that the mean strain has no effect on the stress response. This fact should be considered in establishing constitutive models.