Numerical and Experimental Study of Strain Rate Effects in Laser Forming
Numerical and Experimental Study of Strain Rate Effects in Laser Forming
复制标题
激光成形中应变率效应的数值和实验研究
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Y. Yao
中科院分区：
文献类型：
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作者：
Wenchuan Li;Y. Yao
对应变率对激光成形的影响进行了实验研究和数值模拟。为了隔离和有效地研究应变率效应，这是温度依赖性，一个恒定的峰值温度的方法开发的数值模拟和解决方案的援助。在峰值温度恒定的条件下，通过实验和数值模拟研究了应变速率对成形效率、成形件残余应力和硬度的影响。在数值模型中，考虑了温度和应变率对流变应力和其他材料性能的影响。模拟结果与实验观测结果一致。
Experimental investigation and numerical simulation of the influence of the strain rate in laser forming are presented. To isolate and effectively study the strain rate effects, which are temperature dependent, a constant peak temperature method is developed with the aid of numerical modeling and solution. Under the condition of the constant peak temperature, the effects of strain rate on forming efficiency, residual stress and hardness of the formed parts are studied both experimentally and numerically. In the numerical model, the temperature dependence and strain-rate dependence of the flow stress and other material properties are considered. The simulation results are consistent with the experimental observations.