锻压技术

汽车钢板胀形件刚度和静态残余凹痕抗力试验研究

英文标题：Experimental investigation on the stiffness and static residual dent resistance of automotive steel sheet bulging specimen

作者：张军黄烜昭何浪李小强万政李东升

单位：马鞍山钢铁股份有限公司安徽省汽车用钢及应用工程技术研究中心北京航空航天大学

关键词：抗凹试验刚度静态残余凹痕抗力汽车钢板

分类号：TH16

出版年,卷(期):页码：2015,40(5):134-139

摘要：

刚度和静态残余凹痕抗力是反映汽车钢板使用性能的重要指标。针对汽车钢板的特点，利用典型胀形件来研究汽车钢板抗凹性能。采用2种不同厚度的DC04钢板和1种厚度的H340LA钢板，在其他条件相同的情况下进行冲压，得到3种不同胀形高度的试件，并对这9种胀形件进行抗凹性试验研究。研究结果表明：采用屈服强度高的材料可以提高胀形件的静态残余凹痕抗力；随着材料厚度增大，胀形件的抗凹刚度和静态残余凹痕抗力都明显增大；在一定范围内，随着胀形高度增加，胀形件的刚度和静态残余凹痕抗力保持不变或略有增大。

Stiffness and static residual dent resistance are important indicators of automotive performance. For the characteristics of automotive steel, the dent resistance performance of automobile sheet metal was studied by typical bulging piece. Bulging specimens of sheet metal DC04 with two kinds of different thicknesses and sheet metal H340LA with one kind of thickness were bulged into three different heights under the same boundary condition. Dent resistance tests were carried out on nine kinds of different bulging specimens. The results show that the static residual dent resistance of bulging specimens can be increased by using material with higher yield strength. Stiffness and static residual dent resistance of bulging specimens increase significantly with the increasing of material thickness. However, within a certain range, stiffness and static residual dent resistance of bulging specimens remain unchanged or increase slightly with the increasing of bulging height.

基金项目：

国家自然科学基金资助项目（50905008）

张军(1979- )，男，硕士，工程师

参考文献：

［1］Lu Hongzhou, Ma Mingtu, You Jianghai,et al. Dent resistance for automobile body panels [J]. Chinese Journal of Mechanical Engineering, 2009, 22(6):1-9.
［2］Holmberg S, Nejabat B. Numerical assessment of stiffness and dent properties of automotive exterior panels [J]. Materials and Design, 2004,25:361-368.
［3］王亮，李东升，陈连峰，等. 车身覆盖件抗凹性试验方法及系统[J]. 北京航空航天大学学报, 2014, 40(6): 742-748.Wang L, Li D S, Chen L F, et al. Dent resistance test method and system for auto-body panel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(6): 742-748.
［4］Hua-Chu Shih，Curt D Horvath. Effects of material bending and hardening on static dent resistance[R]. Detroit, Michigan：SAE, 2003.
［5］Hua-Chu Shih，Curt D Horvath. Effects of material bending and hardening on dynamic dent resistance[R]. Detroit, Michigan：SAE, 2005.
［6］龙安，吴青松，祝洪川，等. 基于Autoform的汽车用钢抗凹性模拟研究[J]. 热加工工艺, 2014, 43(20): 66-80.Long A, Wu Q S，Zhu H C, et al. Research on simulation of dent resistance of automobile steel based on Autoform [J]. Hot Working Technology, 2014, 43(20): 66-80.
［7］Li Y, Wang Z J. Finite element analysis of stiffness and static dent resistance of aluminum alloy double-curved panel in viscous pressure forming [J]. Transaction of Nonferrous Metals Society of China, 2009, 19: 312-317.
［8］张钧萍, 马鸣图, 方刚,等. 铝合金板材抗凹性能研究[J]. 中国工程科学, 2014, (1): 108-112.Zhang J P, Ma M T, Fang G,et al. Research on dent resistance property of aluminum alloy sheets[J]. Engineering Sciences, 2014, (1): 108-112.
［9］Ekstrand. Gunnar, Asnafi, et al. On testing of the stiffness and dent resistance of autobody panels [J]. Materials and Design, 1998, 19(4): 145-156.
［10］Shi M, Brindza J, Michel P, et al. Static and dynamic dent resistance performance of automotive steel body panels[R]. Detroit, Michigan：SAE, 1997.
［11］Gunnarsson L, Schedin E. Improving the properties of exterior body panels in automobiles using variable blank holder force [J]. Journal of Materials Processing Technology, 2001, 114: 168-173.
［12］Holmberg S, Thilderkvist P. Inuence of material properties and stamping conditions on the stiffness and static dent resistance of automotive panels [J]. Material and Design, 2002, 23: 681-691.
［13］Daud A R, Wong Karen M C. The effect of cerium additions on dent resistance of Al-0.5Mg-1.2Si-0.25Fe alloy for automotive body sheets [J]. Materials Letters, 2004, 58: 2545-2547.
［14］Li D, Zhou X, Lu X. Evaluation system of sinking-resistance for auto-body sheet material [J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(5): 467-470.

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