|
摘要：
|
|
对比了DP490双相钢与常规外覆盖件用钢的材料特性差异，以某车型后车门外板为研究对象，结合仿真和试验研究了应用DP490双相钢的车门外板高强减薄后风险最大的成形性及抗凹性问题。结果表明，针对目标零件，采用DP490双相钢的成形状态良好，无开裂、起皱缺陷，虽然部分测量位置尺寸偏差超出上、下限，但满足包边要求。同时，仿真及试验均表明，外板抗凹性得到较大提升，虽然抗凹刚度下降，但满足抗凹刚度要求。因此，采用0.65 mm厚度的DP490双相钢板制作车门外板具备可行性，可以作为未来车型选材的备选方案。
|
|
The difference in material properties between DP490 dual phase steel and conventional steel used in outer cover parts was compared, and for the rear door outer panel of an automobile, its formability and dent resistance property which were the riskiest after the high strengthen thinning of door outer panel using DP490 dual phase steel were studied by simulation and experiments. The results show that the formability of the aimed parts using DP490 dual phase steel is good without cracking or wrinkling defects. Although the size deviation in some measurement positions exceeds the upper and lower limits, but it meets the requirement of edge bending. At the same time, the simulation and experiment results show that the dent resistance property of outer panel improves greatly, and the dent stiffness reduces, but the dent stiffness requirements is met. Thus, it is feasible to use the DP490 dual phase steel with
the thickness of 0.65 mm to produce door outer panel, which is an alternative scheme for the vehicle selection material in the future.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
逯若东（1985-），男，硕士，工程师，E-mail：luruodong@163.com
|
|
参考文献：
|
[1]郎勇.车身轻量化技术[J]. 汽车实用技术，2018，(5)：104-108.
Lang Y. Lightweight technology of body[J]. Automobile Applied Technology，2018，(5)：104-108.
[2]李自罡，何向明.车门外板外覆盖件成形工艺研究[J]. 模具工业，2003，(6)：24-26.
Li Z G, He X M. Study on the forming process of auto external door panel cover sheets[J]. Die & Mould Industry，2003，(6)：24-26.
[3]Hu L, Xie H, Hu X X, et al. Research on springback compensation of aluminum alloy automobile body panel [J]. Advanced Materials Research, 2013, 791-793: 390-393.
[4]Jurgen Hirsch. Aluminium in innovative light-weight car design[J]. Materials Transactions, 2011, 52(5): 818-824.
[5]黄永生，韩永志，周昌乐, 等.铝合金车门外板充液拉深成形的有限元分析[J]. 汽车工程，2017，39(4)：486-490.
Huang Y S，Han Y Z，Zhou C L，et al. Finite element analysis on hydro-mechanical deep-draw forming for the outer panel of aluminum-alloy car door[J]. Automotive Engineering，2017，39(4)：486-490.
[6]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，2014，16(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，2014，16(1)：108-112.
[7]王猛，康建立，刘海辉, 等. 两种国产汽车车身铝合金板冲压成形性研究及应用[J]. 铝加工，2011，1(6)：32-37.
Wang M，Kang J L，Liu H H，et al. Research and application of aluminum alloy stamping for two kinds of domestic automobile body sheet[J]. Aluminium Fabrication，2011，1(6)：32-37.
[8]彭本栋. 汽车外板用DP 钢与BH 钢的成形性能对比研究[J]. 现代制造技术与装备，2019，(5)：32-33.
Peng B D. Contrastive study on formability of DP steel and BH steel for automobile outer plate[J]. Modern Manufacturing Technology and Equipment, 2019，(5)：32-33.
[9]王开松，王小睿，尹广, 等.基于ABAQUS的车门外板抗凹性能分析[J]. 安徽理工大学学报: 自然科学版，2018，38(2)：44-47.
Wang K S, Wang X R, Yin G，et al. Dent resistance analysis of automobile outer door panel based on ABAQUS[J]. Journal of Anhui University of Science and Technology: Natural Science，2018，38(2)：44-47.
[10]Hua-Chu Shih，Curt D Horvath.Effects of material bending and hardening on dynamic dent resistance [A]. SAE Technical Papers [C].Detroit，USA，2005.
[11]GB/T 15825.8—2008，金属薄板成形性能与试验方法第8部分：成形极限图(FLD)测定指南[S].
GB/T 15825.8—2008，Sheet metal formability and test methods—Part 8: Guidelines for the determination of forming-limit diagrams[S].
[12]孙运良，路平.汽车开闭件屈曲、抗凹分析研究[J]. 汽车实用技术，2019，1(3)：177-178.
Sun Y L, Lu P. Study on buckling and concave resistance of automobile opening and closing parts[J]. Automobile Applied Technology，2019，1(3)：177-178.
[13]吴向东，张毅升，万敏,等.板材成形性能试验方法及应用[J]. 精密成形工程，2019，(3)：42-50.
Wu X D, Zhang Y S, Wan M，et al. Application and test methods of sheet metal formability[J]. Journal of Netshape Forming Engineering，2019，(3)：42-50.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
