摘要
根据汽车覆盖件复杂曲面及成形特点,以能够代表汽车覆盖件曲面特点的双曲面扁壳件为研究对象,建立了双曲类覆盖件刚度测评的试验分析系统,确定了研究刚度的测评方法.利用有限元模拟软件PAM-STAMP,建立了与研究对象相一致的有限元模拟模型,并对双曲面扁壳件的成形及回弹过程进行了模拟,分析了在不同成形条件下,厚度及应力与应变分布规律.增加采用有限元方法分析双曲扁壳件刚度的可靠性,为控制及分析汽车覆盖件刚度提供理论依据.
The analysis system of stiffness is established by analyzing the complicated shapes and forming processes of automotive panels according to the characteristics of double-curved shallow shells and the method assessment of panel stiffness is defined. The double -curved shallow shell＇s finite element models that could represent automotive panels are established by the finite element simulation software PAM-STAMP. The forming and springback process of the double-curved shallow shell are simulated, and the distribution of thickness, strain and stress under different forming conditions are analyzed. The reliability of the finite element analysis on stiffness of the double-curved shallow shell is enhanced, and a theoretical basis is provided for the control and analysis of automotive panel stiffness.
出处
《应用科技》
CAS
2012年第6期34-38,共5页
Applied Science and Technology
基金
黑龙江省博士后基金资助项目(323630303)
哈尔滨工程大学基础研究基金资助项目(019860260706)
关键词
双曲扁壳件
刚度
汽车覆盖件
成形条件
有限元模拟
doublecurved shallow shell
stiffness
automotive panel
forming condition
finite element simulation
