摘要
基于汽车覆盖件成形特点,建立了研究刚度问题的双曲面扁壳试验研究模型和有限元模拟模型,试验验证了数值模拟对覆盖件刚度的分析与预测的可靠性。采用数值模拟和试验相结合的方法研究探讨了各影响因素,即板材几何形状、成形工艺因素及材料性能参数对刚度的影响规律,分析各因素间对刚度的影响权重,揭示双曲面扁壳类覆盖件刚度的影响机制。在减重节能背景下,在不增加板料厚度的情况下,改变汽车的流线设计,选择合适的材料以及调整成形时的工艺参数将有助于提高汽车覆盖件的刚度。
Based on the forming characteristics of automobile panel,the experimental research model and the finite element simulation model for hyperbolic shallow shell were established to study the stiffness problem.The reliability of the numerical simulation on the analy-sis and prediction of the stiffness of panel was verified.The influence of factors,namely panel geometry,forming process and material per-formance parameters on stiffness,was studied by the combination of numerical simulation and test,and the influence weight of each factor on stiffness was analyzed.The influence mechanism of the stiffness of the hyperboloid shallow shell was revealed.Under the background of reducing weight and saving energy,without increasing sheet metal thickness,changing the automobile streamline design,choosing the ap-propriate material and adjusting the forming process parameters can help to improve the stiffness of automobile panels.
作者
赵立红
于海平
雷呈喜
吴滨
ZHAO Li-hong;YU Hai-ping;LEI Cheng-xi;WU Bin(Engineering Training Center,Harbin Engineering University,Harbin 150001,China;School of Materials Science&Engineering,Harbin Institute of Technology,Harbin 150001,China;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2019年第4期280-286,共7页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51275103
51675128)
关键词
汽车覆盖件刚度
板料成形
双曲面扁壳件
材料性能
影响机制
automotive panel stiffness
sheet forming
hyperboloid shallow shell
material performance
influence mechanism
