摘要
对200℃回火的50SiMnVB钢常温下的准静态和动态力学特性进行了测试,得出材料在不同应变率下的应力-应变曲线,根据Johnson-Cook模型,建立了200℃回火的50SiMnVB钢从准静态到动态较宽应变速率的物理本构方程。对比结果表明:所建立的本构方程和实验结果吻合的较好。
The quasistatic and dynamic properties of 50SiMnVB under room temperature have been tested under treating of quenching on 860℃ and tempering on 200℃,and true stress strain curves at several strain rates have been obtained.According to the Johnson-Cook model,the physical constitutive equation for Tempered Steel 50SiMnVB has been established,which describes the character of 50SiMnVB changing from quasistatic to dynamic in a long range strain rates.The comparing result shows that the experiment fits the equati...
出处
《锻压装备与制造技术》
2008年第6期99-103,共5页
China Metalforming Equipment & Manufacturing Technology
基金
国家自然科学基金资助项目(50575213)
山西省青年科学基金资助项目(2007021026)
