摘要
对典型空心构件汽车前梁内高压成形工艺进行了数值模拟研究,基于弹塑性有限元法和BT壳元理论建立计算模型并进行动力显式求解,分析了主要工艺参数———管坯尺寸和内压加载路径对成形质量的影响。模拟结果表明,采用管径55mm及低压合模、高压整形双线性加载路径时能显著控制起皱、破裂缺陷的产生,成形质量较理想。可见,合适的工艺参数能改善内高压成形过程中材料的分布、提高材料的成形极限、控制缺陷产生并提高产品质量。
To achieve weight reduction, strength increase and stiffness improvment, tube hydroforming is widely used in auto industry. The hydroforming process of automobile front transom was simulated by FEM, which is based on elastic-plastic finite element method and BT shell element theory. The effect of forming process parameters, such as internal pressure loading path and initial tube size, were simulated and discussed. The simulation results indicated that suitable initial tube size and loading path can obviousl...
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第S1期38-40,共3页
China Mechanical Engineering
基金
安徽省"十一五"科技攻关项目(06012150C)
关键词
管材
内高压成形
数值模拟
成形工艺
tube
hydroforming
numerical simulation
forming process
