数字化应变分析技术在汽车零部件冲压成形性能评价中的应用
Application of Digital Strain Analysis Technology in Evaluation of Stamping Forming Performance of Automotive Parts
以 210P1 冲压汽车零部件左/右C柱内板为例,利用数字化应变分析技术,结合金属塑性成形体积不变原理与 210P1 的成形极限曲线,获得了重点关注区域内钢板的应变分布云图与最大厚度减薄率值云图。结果表明,重点关注区域内钢板的最大厚度减薄率值为 20.67%,小于 25%的厚度减薄安全裕度值;最小成形极限值为 21.8%,大于 10%的成形安全裕度值,钢板成形性能优良,且具有较高的使用安全性。
Taking the left/right C-pillar inner plate of 210P1 stamping automotive components as an example,using digital strain analysis technology,combined with the principle of volume invariance in metal plastic forming and the forming limit curve of 210P1.Obtained the strain distribution contour map and maximum thickness reduction rate contour map of the steel plate in the key focus area.The results show that the maximum thickness reduction rate of steel plates in the key focus area is 20.67%,which is less than the safety margin value of 25%thickness reduction;The minimum forming limit value is 21.8%,which is greater than the forming safety margin value of 10%.The steel plate has excellent forming performance and high usage safety.
郝志强;刘文博;徐鑫;梁笑;李春林;
海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009##鞍钢集团钢铁研究院,辽宁 鞍山 114009;海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009##鞍钢集团钢铁研究院,辽宁 鞍山 114009;海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009##鞍钢集团钢铁研究院,辽宁 鞍山 114009;海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009##鞍钢集团钢铁研究院,辽宁 鞍山 114009;海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009##鞍钢集团钢铁研究院,辽宁 鞍山 114009;
digital strain analysis forming limit thickness reduction rate safety margin
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