Dissipative Energy Based Description for Hardening and Its Application to Non-proportional Cyclic Plasticity
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TG142.71 O733.9

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    Abstract:

    The heterogeneous nature of metallic materials result in residual microstress fields during plastic deformation.The energy stored in the residual microstress fields affects the subsequent plastic deformation. Based on this concept, a nonclassical constitutive model is developed. On the other hand, it is found that there exists difference of dissipative plastic energy between different plastic strain paths. A dissipative plastic energy based hardening parameter is proposed and introduced into the hardening function, which isthen embedded in the non-classical constitutive model. The stress responses of 304 stainless steel subjected to biaxial non-proportional loading are analyzed and the results coincide well with the experimental results.

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皮文丽,彭向和.塑性耗散功的强化描述及其应用[J].重庆大学学报,2004,27(11):77~79

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  • Revised:July 30,2004
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