Hot Stamping of Door Impact Beam

Li, Mingfu; Chiang, Tzu-Shin; Tseng, Jiun-Hau; Tsai, Chia-Nung

doi:10.1016/j.proeng.2014.10.233

Cited by 28 publications

(8 citation statements)

References 4 publications

(4 reference statements)

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“…Lee et al prototyped and tested a high-strength hot-stamped steel impact beam. 10 Hot stamping affords many advantages including a simple process, and reductions in weight and cost. An optimal design was presented in ref.…”

Section: Introductionmentioning

confidence: 99%

Use of the FMVSS-214 static bending test to evaluate an automobile side door impact beam made of glass fiber-reinforced plastic

Baek

Lee

2022

Journal of Composite Materials

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A side door impact beam absorbs energy and plays an important role in preventing intrusion of another vehicle into the occupant area. Impact beams are being actively researched to reduce vehicle weight while still meeting the strength requirements of environmental regulations and to improve fuel efficiency and enhance safety. No study has subjected a lightweight glass fiber-reinforced plastic (GFRP) impact beam to the Body in White (BIW) Federal Motor Vehicle Safety Standard (FMVSS)-214 quasi-static test. We compared three beams that differed in shape and stacking pattern. We performed three-point bending analyses, bending tests (including after bracket tightening), and static bending tests of door assemblies. The best GFRP beam (B) and a steel model were compared in terms of BIW static bending performance. The front-door GFRP beam exhibited an average reaction force 135% of that mandated by the FMVSS-214S test specification, an intermediate average reaction force 158% of that required, and a final force 154% of that required. In terms of bending performance, the initial average reaction force was 9.5% higher than that of the steel impact beam, and the rear door force was 6.6% lower. The reaction force of the GFRP beam decreased rapidly as breakage occurred after bending through 110.0–120.0 mm; however, the average reaction force was similar to that of the steel beam. Thus, the GFRP impact beam met the legal requirements but weighed 30% less than the steel beam.

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Section: Introductionmentioning

confidence: 99%

Use of the FMVSS-214 static bending test to evaluate an automobile side door impact beam made of glass fiber-reinforced plastic

Baek

Lee

2022

Journal of Composite Materials

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“…The result of this analysis is the basis for the development of the tool design. When the tool and trial series of drawpieces are made, it is necessary to check the parameters related to both dimensional accuracy and expected mechanical properties [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Hot Stamping Tool Cooling System—A Case Study

Danielczyk

Wróbel

2021

Materials

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One of the important steps in the design of hot stamping tools is the analysis of their cooling system. This article presents an authorial, two-stage approach to solving this problem. The first stage consisted of a series of simulations of the hot stamping process in the Autoform package, with initial selection of shape and arrangement of cooling channels. These results allowed for the design of the tool for which the coupled thermal-flow analysis was carried out. The correctness of the adopted design assumptions has been confirmed by experimental tests. A trial series of drawpieces made in production conditions meet the requirements for hardness, mechanical properties, and appropriate microstructure. The presented procedure has become the practice of the drawpiece producers.

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“…The material behavior of hot-stamped steels has been previously investigated extensively [1,2]. However, the description of friction in the FE simulations of hot stamping processes is usually oversimplified by the use a constant Coulomb friction coefficient (COF) [1,[3][4][5]; consequently, the actual conditions are not well represented. The description of these conditions is the focus of this study.…”

Section: Introductionmentioning

confidence: 99%

Multiscale friction model for hot sheet metal forming

et al. 2021

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The accurate description of friction is critical in the finite element (FE) simulation of the sheet metal forming process. Usually, friction is oversimplified through the use of a constant Coulomb friction coefficient. In this study, the application of an existing multiscale friction model is extended to the hot stamping process. The model accounts for the effects of tool and sheet metal surface topography as well as the evolution of contact pressure, temperature, and bulk strain during hot stamping. Normal load flattening and strip drawing experiments are performed to calibrate the model. The results show that the model can relatively well predict friction in strip draw experiments when the tool surface evolution due to wear is incorporated. Finally, the application of the formulated multiscale friction model was demonstrated in the FE simulation of a hot-stamped part.

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Hot Stamping of Door Impact Beam

Cited by 28 publications

References 4 publications

Use of the FMVSS-214 static bending test to evaluate an automobile side door impact beam made of glass fiber-reinforced plastic

Use of the FMVSS-214 static bending test to evaluate an automobile side door impact beam made of glass fiber-reinforced plastic

Analysis of Hot Stamping Tool Cooling System—A Case Study

Multiscale friction model for hot sheet metal forming

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