0Cr17Ni4Cu4Nb为沉淀硬化型不锈钢,常用在高强度冲击结构中.本文利用分离式Hopkinson压杆实验设备测定了该材料在多种应变率下的动态应力-应变关系,在此基础上选择了Cowper-Symonds 动态强化模型来拟合和描述材料的动态本构特性.利用拟合得到的相应参数对该材料的动态力学性能进行详细的分析,同时还分析了该材料的工程应力-应变曲线和真实应力-应变曲线参数之间的相同点和不同点.
参考文献
| [1] | Kolsky H .An investigation of the mechanical properties of materials at very high rates of loading[J].Proceedings of the Physical Society London,1949,62B:676-700. |
| [2] | J.E. Field;S.M. Walley;W.G. Proud;H.T. Goldrein;C.R. Siviour .Review of experimental techniques for high rate deformation and shock studies[J].International journal of impact engineering,2004(7):725-775. |
| [3] | 杨桂通.塑性动力学[M].北京:高等教育出版社,2000 |
| [4] | Riqiang Liang;Akhtar S Khan.A critical review of experimental results and constitutive models for BCC and FCC metals over a wide range of strain rates and temperatures[J].International Journal of Plasticity,1999(15):963-980. |
| [5] | Johnson G R;Cook W H.A constitutive model and data for metals subjected to large strains,high strain rates and high temperatures[A].the hague,Netherlands,1983:541-547. |
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