22MnB5超高强度钢冷冲压成形的数值模拟
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摘要
超高强度钢冷冲压成形技术在汽车领域的应用越来越广泛。以22MnB5超高强度钢U形件为研究对象,采用Dynaform软件对U形件进行了有限元模型建立和数值仿真,研究了摩擦系数和压边力对工件冷成形过程中回弹量的影响,并建立了回弹量与摩擦系数和压边力的数学模型,回弹量与摩擦系数呈反比例关系,与压边力呈二次函数关系,这对超高强度钢冷成形工艺方案的制定提供理论指导。
Ultra-high strength steel cold stamping forming technology is more and more widely used in the automotive field. The forming process of U-bend parts of 22 MnB5 ultra-high strength steel was studied. Dynaform software was used to simulate the U-bend parts by the finite element model and numerical simulation. The influence of process parameters such as friction coefficient and blank holding force on the springback of cold forming process was studied. The mathematical models of springback and friction coefficient were established. The springback was inversely proportional to the friction coefficient,and was quadratic function to the blank holding force,which can provide theoretical guidance for the formulation of cold forming process.
Ultra-high strength steel cold stamping forming technology is more and more widely used in the automotive field. The forming process of U-bend parts of 22 MnB5 ultra-high strength steel was studied. Dynaform software was used to simulate the U-bend parts by the finite element model and numerical simulation. The influence of process parameters such as friction coefficient and blank holding force on the springback of cold forming process was studied. The mathematical models of springback and friction coefficient were established. The springback was inversely proportional to the friction coefficient,and was quadratic function to the blank holding force,which can provide theoretical guidance for the formulation of cold forming process.
引文
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[3]王利,杨雄飞,陆匠心.汽车轻量化用高强度钢板的发展[J].钢铁,2006,41(9):1-8.
[4]朱久发.热冲压技术应用现状与发展前景[J].武钢技术,2012,50(4):58-61.
[5]姜超,单忠德,庄百亮,等.热冲压成形22MnB5钢板的组织和性能[J].材料热处理学报,2012,33(3):78-81.
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