半圆拉深筋参数与DP590钢板后续性能的预测分析  

Prediction analysis for semicircle drawbead parameters and subsequent performance of DP590 sheet metal

作　　者：李群[1] 殷忠晴 赵石岩[1] 金淼[1] 

机构地区：[1]燕山大学先进锻压成形技术与科学教育部重点实验室,河北秦皇岛066004 [2]中车唐山机车车辆有限公司,河北唐山064000

出　　处：《塑性工程学报》2017年第3期13-18,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51475408);河北省自然科学基金资助项目(E2015203223);燕山大学青年教师自主计划课题(13LGA003);河北省高等学校创新团队领军人才培育计划(LJRC012)资助项目

摘　　要：高强钢板通过拉深筋后会出现塑性降低、提前破裂问题,严重影响板材后续成形,因此进行冲压模具设计时不能忽视高强钢板变形不同阶段成形性能的变化。利用正交试验研究了拉深筋结构参数对DP590高强钢板后续成形性能的影响,通过方差分析揭示了各因素对指标的影响规律,结合试验数据回归分析方法,建立了拉深筋阻力、DP590板后续成形性能与拉深筋结构参数对应关系的预测方程,根据预测方程及方差分析结果,总结了DP590高强钢板的拉深筋结构参数设计原则,为DP590高强钢冲压成形质量控制、工艺调整及有限元数值模拟计算中等效拉深筋的设置提供了参考依据。Plasticity reduction and early crack appear after high strength steel sheet metal going through the drawbead, which affects the subsequent formability of the sheet metal seriously. So the changes of the formability of high strength steel sheet metal at different deformation stages cannot be ignored when the corresponding stamping moulds are designed. Orthogonal experiment was designed to investigate the influence of the structural parameters of drawbead on the subsequent formability of high strength steel sheet metal, then the ilffluence regu- larity of various factors on experiment indexes was revealed by analysis of variance. Prediction equations were established by experimental data regression analysis to describe the regularity between drawbead restraining force, the subsequent formability of high strength steel sheet metal and the structural parameters of drawbead. According to the prediction equations and the result of variance analysis, the de- sign principles of the structural parameters of drawbead were presented, which provided references for the stamping quality control of high strength steel DP590, process adjustment and the equivalent drawbead setting in finite element numerical simulation.

关 键 词：高强钢板 拉深筋 冲压成形 后续成形性能 正交试验 回归分析 

分 类 号：TD386.32[矿业工程—矿井建设]