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CAECAECAECAE 1 1 1

1

(after market, AM) 270 MPa 340 MPa DYNAFORM CAE(computer-aided engineering) FLD

: 1. 270 MPa 340

MPa DYNAFORM CAE FLD (forming limit diagram) Song [1] U Qui[2] DYNAFORM 75 75 Shi[3] [4]

DYNAFORM CAE [5] CAD

[6] B180H 2.

2.1 2.1.1 270 MPa = 5920.28 340 MPa DYNAFORM CAE = 6360.27 ATOS STL 1 CATIACADDIE MODEL CAE 2 2.1.2 (drawing ratio) 5~7 mm 3 2.1.3 6 mm 13.5 mm 3 mm 4

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2.2 2.2.1 5 125710 mm/ms 6 5 mm/ms 2.2.2 5 51015202530 mm 7 10 mm 2.2.3 5 357911 8 7 2.2.4 507090110130150 ton 9 90 ton

3. 3.1 10 3.2 270 340 MPa 270 MPa 90 ton 340 MPa 11(a)-(f) 3.3 340 MPa FLD 5090150 ton340 MPa FLD 12(a)(b)(c) 50 ton 150 ton 90 ton 123 3.4 340 MPa Shock Line Shock Line DYNAFORMShock Line(tracking)13Shock Line

3.5 340 MPa DYNAFORM 14 3.2 mm 5.5 mm 2.3 mm 3 mm 4. CAE

4 270 340 MPa 5 k n r ( 1)( 2) n

k = (1)

0 45 902

4

r r rr

+ += (2) 340 MPa 270

5. 6.

1. J. H. Song, H. Huh and, S. H. Kim, Stress-Based Springback reduction of a channel shaped

auto-body part with high-strength steel using

response surface methodology, Journal of

Engineering Materials and Technology, vol.129, pp.

397-406, 2007.

2. H. Qiu, Y. Huang and Q Liu, The study of engine hood panel forming based on numerical simulation

technology. Journal of Materials Processing

Technology. 187-188 (2007) 140-144

3. Xiaoxiang Shi, Jun Chen, Yinghong Peng, Xueyu Ruan, A new approach of die shape optimization

for sheet metal forming processes, Department of

Plasticity Technology, Shanghai Jiao Tong

University, 2004.

4. 2010 5. 2008 6.

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2012

7. 1.

2. CADDIE MODEL

3.

4.

5

(a) point 1

(b) point 2 6.

(mm) (mm/ms)(mm) (mm/ms)

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(a) point 1

(b) point 2 7.

(a) point 1

(b) point 2 8.

9.

10. FLD

(a) 270 MPa 50 ton

(mm) (mm)

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(b) 340 MPa 50 ton

(c) 270 MPa 90ton

(d) 340 MPa 90ton

(e) 270 MPa 150ton

(f) 340 MPa 150 ton 11.

(a) 340 MPa 50ton

(b) 340 MPa 90 ton

(c) 340 MPa 150ton 112. FLD

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13. Shock Line

14. 340 MPa 1 340 MPa 50 ton

No. 1 16.9% 2 13.2% 3 9.8% 4 11.2% 5 12.3% 6 21.4% 7 11.3%

2 340 MPa 90 ton No. 1 17.9% 2 16.4% 3 13.1% 4 14.7% 5 9.3% 6 22.9% 7 8.1%

3 340 MPa 150 ton

No. 1 21.9% 2 20.7% 3 20.5% 4 20% 5 5.4% 6 24.4% 7 5.2%

4 (1) 10 mm (2) 7 (3) 5 mm/ms (4) 90 ton

5 270 MPa 340 MPa

k n 0r 45r 90r r 270 592 0.28 1.865 1.686 2.192 1.857

340 636 0.27 1.72 1.76 2.36 1.823

A CAE Analysis of Metal Stamping of

Fender with High-Strength Steel

Heng-Sheng Lin1

, Wei-Zhong Hong1,

Yuan-Xiao Ye1

1Department of Mold & Die Engineering

National Kaohsiung University of Applied

Sciences

Kaohsiung, TAIWAN

Abstract On echoing the advocating of green technology,

the demand for using high-strength steel to reduce

automobile weight and hence fuel consumption are

increasing. At the same time, the production of

high-strength steel is practical and the scrap of the steel

is recyclable. Thinner steel sheet can achieve same

strength level with lighter weight according to the safety

design. This work investigated the plausibility in

converting deep drawing of steel sheets from 270 to 340

MPa strength. The workpiece is used as the front fender

of aftermarket automobile parts. Finite element software

DYNAFORM was utilized to provide the distribution of

thickness and FLD analysis. The simulation indicated

the conversion of high-strength steel was plausible.

Keywords: Metal Stamping, High-Strength Steel, Fender

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