摘要
采用有限元模拟方法研究了挤压温度和挤压速度对7XXX系铝合金棒材挤压过程中的等效应变、等效应力和挤压力的影响。结果表明,棒材的等效应变平均值和标准差随着挤压温度的升高先减小后增大,随着挤压速度的增加而增大;最大等效应力值随着挤压温度的升高而减小,随着挤压速度的增加而增大;挤压力随着挤压温度的升高而减小,随着挤压速度的增加而增大。综合棒材性能和挤压效率,优化后的挤压温度为380℃,挤压速度为0.1 mm/s。
The influence of extrusion temperature and extrusion speed on the equivalent strain, equivalent stress and extrusion pressure of 7 XXX series aluminum alloy bar was investigated by finite element simulation. The results indicate that the mean value and standard deviation of equivalent strain are decreased firstly and then increased with the increase of extrusion temperature, and increased with the increase of extrusion speed. The maximum equivalent stress is decreased with the increase of extrusion temperature and increased with the increase of extrusion speed. The extrusion pressure is decreased with the increase of extrusion temperature and increased with the increase of extrusion speed. Considering the bar performance and extrusion efficiency, it is suggested that the optimized extrusion temperature and the optimized extrusion speed are presented as 380 ℃ and 0.1 mm/s.
作者
姜玖华
刘中秋
李宝宽
Jiang Jiuhua;Liu Zhongqiu;Li Baokuan(Schoolof Metallurgy,Northeastern University)
出处
《特种铸造及有色合金》
CAS
北大核心
2022年第11期1337-1341,共5页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51974071,52171031)。
关键词
铝合金
有限元模拟
等效应变
等效应力
挤压力
Aluminum Alloy
Finite Element Simulation
Equivalent Strain
Equivalent Stress
Extrusion Pressure
