Transactions of Materials and Heat Treatment

Title：Analysis on drawing process of automotive engine hood inner panel based on Dynaform

Authors： Chen Jitao Song Haiyan Zhu Yongqiang

Unit： Qingdao Huanghai College

KeyWords： automotive engine hood inner panel drawing insufficient stretch wrinkle Dynaform

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2017,42(1):19-22

Abstract：

The drawing process of automotive engine hood inner panel was researched, and the finite element simulation analysis of the drawing process was carried out by numerical simulation. Then, the forming limit diagram and thickness variation diagram of parts were obtained, and the forming effect was assessed. For the defects of insufficient stretch and wrinkles during the drawing process, the preferable drawing results with the maximum thinning rate of 22.8% and the maximum thickening rate of 5.9% were obtained by adjusting the process parameters and the size and distribution of draw bead. The actual drawing experiments were carried out based on the above condition, and the deviation is less than 3% by comparing the thickness at the different points between the simulation results and the test results. Therefore, their consistency is verified. The research results show that the numerical simulation analysis is feasible to analyze the sheet forming and can improve the efficiency of design and production.

Funds：

山东省高等学校科技计划项目（J15LB56）

Reference：

[1]强军. 汽车发罩内板成形工艺参数多目标优化[J]. 锻压技术, 2016, 41(4):41-44.

Qiang J. Multi-objective optimization on forming the automobile hood inner panel[J]. Forging & Stamping Technology, 2016, 41(4):41-44.

[2]李东君. 基于Dynaform的某汽车外板件拉延分析与模具设计[J]. 锻压技术, 2016, 41(4):151-156.

Li D J. Analysis and die design on outer panel drawing part of automobile based on Dynaform[J]. Forging & Stamping Technology, 2016, 41(4):151-156.

[3]杨谊丽, 陈文琳, 崔礼春. 尾门外板冲压成形数值模拟及伺服拉深实验[J]. 锻压技术, 2016, 41(3):153-157.

Yang Y L, Chen W L, Cui L C. Numerical simulation of forming process for tail-gate outer panel and its servo drawing experiment[J]. Forging & Stamping Technology, 2016, 41(3):153-157.

[4]孙东继, 舒常乐, 罗仁平, 等. 车身后盖板外板回弹优化控制[J]. 锻压技术, 2015, 40(2):32-36.

Sun D J, Shu C L, Luo R P, et al. Optimal control to the springback of outer panel in auto rear cover[J]. Forging & Stamping Technology, 2015, 40(2):32-36.

[5]刘娟. 汽车引擎盖拉延成形的数值模拟仿真[D]. 长沙：中南林业科技大学, 2012.

Liu J. Numerical Simulation of Drawing Forming of Car Hood[D]. Changsha：Central South University of Forestry and Technology, 2012.

[6]马国英, 黄彬兵, 苏春建, 等. 汽车翼子板拉深成形模拟及工艺参数优化[J]. 锻压技术, 2015, 40(3):21-24.

Ma G Y, Huang B B, Su C J, et al. Simulation and parameters optimization of deep drawing for automobile fender[J]. Forging & Stamping Technology, 2015, 40(3): 21-24.

Service：

【This site has not yet opened Download Service】【Add Favorite】