Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (4): 1258-1265.doi: 10.13229/j.cnki.jdxbgxb20180303

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Numerical simulation for handbrake fixed plate forming

Xin LI1(),Dan WANG1,Jun⁃xu CHEN2,Yan⁃peng SUN1,Zheng⁃wei GU1,Hong XU1   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130022, China
    2. FAW Jiefang Automobile Company Limited, Qingdao 266000, China
  • Received:2018-04-03 Online:2019-07-01 Published:2019-07-16

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Abstract:

The stamping process of handbrake fixed plate on the automobile was simulated using the finite element simulation software AutoForm, and the influence mechanism of process parameters on the drawing forming was investigated. Orthogonal experiments were used to optimize parameters and the whole process was simulated. The simulation results indicate that the quality of forming parts is improved by optimizing the process parameters on the basis of the rational design of the drawbead. The optimum condition of process parameters are blankholder force 600 kN, die radius 6 mm, die gap 1.50 mm, friction coefficient 0.15, drawbead coefficient 0.5. The correctness of the simulation results is proved by practical experiments, which means that simulation software Autoform can be applied to guide the actual production.

Key words: materials synthesis and processing technology, handbrake fixed plate, AutoForm, numerical simulation, multi?objective optimization

CLC Number: 

  • TG386

Fig.1

Three dimensional model of handbrake fixed plate"

Fig.2

Finite element model"

Fig. 3

Forming limit diagram of initial simulation"

Fig.4

Evolution of maximum thinning and maximum wrinking criterion with force"

Fig.5

Forming limit diagram of typical for special blank holder force"

Fig.6

Evolution of maximum thinning and maximum wrinking criterion with die radius"

Fig.7

Forming limit diagram of typical die radius"

Fig.8

Evolution of maximum thinning and maximum wrinking criterion with friction coefficient"

Fig.9

Forming limit diagram of typical friction codfficient"

Fig.10

Evolution of maximum thinning and maximum wrinking criterion with coefficient drawbeads"

Fig.11

Arrangement of drawbead and forming limit diagram of typical coefficient drawbeads"

Table 1

Orthogonal t and analysis of orthogonal experiment result"

序列 影响因素 评判标准
A B C D 最大减薄率% 最大起皱评判值%
最佳参数组合 A3 B1 D4 C3
1 A1(400) B1(6) C1(0.13) D1(1.44) 29.8 2.3
2 A1(400) B2(7) C2(0.14) D2(1.46) 29.6 2.5
3 A1(400) B3(8) C3(0.15) D3(1.48) 28.8 2.7
4 A1400) B4(9) C4(0.16) D4(1.50) 28.7 2.5
5 A2(500) B1(6) C2(0.14) D3(1.48) 29.6 2.7
6 A2(500) B2(7) C1(0.13) D4(1.50) 29.7 2.7
7 A2(500) B3(8) C4(0.16) D1(1.44) 29.7 3.0
8 A2(500) B4(9) C3(0.15) D2(1.46) 28.7 2.8
9 A3(600) B1(6) C3(0.15) D4(1.50) 28.8 2.4
10 A3(600) B2(7) C4(0.16) D3(1.48) 29.6 2.5
11 A3(600) B3(8) C1(0.13) D2(1.46) 29.1 2.7
12 A3(600) B4(9) C2(0.14) D1(1.44) 29.3 2.4
13 A4(700) B1(6) C4(0.16) D2(1.46) 30.1 2.7
14 A4(700) B2(7) C3(0.15) D1(1.44) 30.2 2.7
15 A4(700) B3(8) C2(0.14) D4(1.50) 29.5 2.6
16 A4(700) B4(9) C1(0.13) D3(1.48) 29.9 2.5
极差 R 1 0.725 0.625 0.50 0.575 影响程度 A>B>D>C

最优

组合

 A3 B3 D4 C3
R 2 0.3 0.225 0.025 0.125 A>B>D>C A3 B1 D4 C1

Fig.12

Comparison of simulation results with actual experimental in the best combination of parameters"

Fig.13

Actual production of handbrake fixed plate"

Fig.14

Springback simulation result"

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