拉延筋对阻力和摩擦阻力的影响  

Influence of draw bead on feeding resistance force and friction resistance force

作　　者：孙为朋 唐士东 陈伟华 李兴国 刘继忠 SUN Wei-peng;TANG Shi-dong;CHEN Wei-hua;LI Xing-guo;LIU Ji-zhong(Qingdao Branch,FAW-Volkswagen Automobile Co.,Ltd.,Qingdao 266217,China)

机构地区：[1]一汽-大众汽车有限公司青岛分公司,山东青岛266217

出　　处：《塑性工程学报》2025年第4期43-49,共7页Journal of Plasticity Engineering

摘　　要：为了减少冲压生产过程中摩擦力波动对冲压生产过程稳定性的影响,从而提升冲压生产的稳定性,采用ABAQUS分析了板料流经拉延筋过程中摩擦力在拉延筋阻力中的占比,通过拉延筋形状参数化设计和试验设计分析了拉延筋阻力中摩擦占比,建立了拉延筋阻力及其摩擦占比关于拉延筋几何参数的响应面模型,采用遗传算法以摩擦占比最小为目标求解,求得设计空间内的帕累托优化解,并通过有限元模拟验证了响应面模型求解结果的有效性。结果表明,在最优解空间内,随着拉延筋阻力增加,摩擦占比从50%逐渐下降,并趋近于30%。通过求解近似模型,可以得到拉延筋最优形状,拉延筋宽度由双筋的40 mm减少到单筋的16 mm,因此板料拉延后在拉延筋处的废料显著减少,降低了摩擦占比,提高了生产稳定性,且减少了材料浪费,降低了企业成本。To reduce the influence of friction force fluctuation on the stability of the stamping production process and thus to improve the stability of stamping production,the proportion of friction force in draw bead resistance force was analyzed during the process of sheet metal flow through draw bead using ABAQUS.The friction ratio of friction of the draw bead resistance force was analyzed through draw bead shape parametric design and experimental design.The response surface model of draw bead resistance force and its friction ratio about draw bead geometric parameters was established.Pareto optimal solutions in the design space were obtained by genetic algorithm with the aim of the minimizing friction ratio,and the effectiveness of the response surface model solution results was verified through finite element simulation.The results show that in the optimal set space,the friction ratio decreases from 50%to 30%with the increase of draw bead resistance force.The optimal shape of draw bead is obtained by solving the approximation model.The width of draw bead is reduced from 40 mm of the double draw bead to 16 mm of the single draw bead,so the waste material in the draw bead is significantly reduced after drawing,which reduces the friction ratio,improves production stability,and reduces material waste,reduces business costs.

关 键 词：拉延筋阻力 摩擦阻力 响应面模型 遗传算法 有限元仿真 

分 类 号：TG386[金属学及工艺—金属压力加工]