AHSS Application in Roof Strength

Huang, Liang; Kuo, Min; Yan, Benda

doi:10.4271/2007-01-0339

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…The research conducted in [4] emphasized the influence of AHSS parts in crash behavior and concluded that using these steel grades improves the crashworthiness of the vehicle. The study in [6] introduced AHSS to auto-roof strength application and studied by FEA simulation to demonstrate that AHSS design can meet the proposed more stringent roof crush requirement. The excellent properties of steel are achieved by employing common alloying elements (carbon, manganese, boron, silicon, nickel, chromium and molybdenum) and other metallurgical strengthening mechanisms Paper E. Crash Response of a Repaired Vehicle -Influence of Welding UHSS Members which help in its excellent tensile strength [7].…”

Section: E1 Introductionmentioning

confidence: 99%

Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members

Noorsumar

Robbersmyr

Rogovchenko

et al. 2020

SAE Technical Paper Series

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Automakers generally recommend not to weld structural parts after a vehicle crash, and these should be replaced as a whole part in case of a crash event. Sectioning of these members is also not recommended, and use of the repair manual is mandatory in case of fracture of such parts. However, repair shops may not adhere to these instructions and use incorrect repair procedures on these members which would modify their strength properties. This study analyses the impact of welding structural members in a vehicle like the A-pillar which use Ultra-High Strength Steels (UHSS) for reducing the weight of the vehicle and improving the crashworthiness of the structure. The research conducted in this paper highlights the differences in the crash performance of a repaired vehicle as opposed to baseline injury values for the vehicle. The performance of the modified vehicle when tested for different loadcases shows reduced crash performance as compared to the baseline performance and it can be concluded that welding or sectioning the UHSS parts would influence the crashworthiness of a vehicle. This paper only focuses on structural integrity of the repaired vehicle in a crash event. The performance of the vehicle in occupant injury is kept out of scope for this study.

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Section: E1 Introductionmentioning

confidence: 99%

Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members

Noorsumar

Robbersmyr

Rogovchenko

et al. 2020

SAE Technical Paper Series

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show abstract

“…Jacek and Ireneusz 7 put AHSS into use of automotive body parts and simulated its stamping process. Huang et al 8 introduced AHSS to auto-roof strength application and studied by FEA simulation which demonstrated that AHSS design is capable of meeting the proposed more stringent roof crush requirement. Yang et al 9 explored the dynamic behavior and energy absorption effects of an AA.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness and lightweight optimization to applied multiple materials and foam-filled front end structure of auto-body

Zhao

et al. 2017

Advances in Mechanical Engineering

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Auto-body's front end structure, such as bumper and crash box, has the vital function of protecting other components from damage during low-velocity collision; moreover, it should accomplish excellent lightweight effect under the insurance of crashworthiness. This article combined the two approaches of lightweight improvement that listed as using structural optimization and replacing original materials with high strength and high mass efficiency materials or employing reinforced materials to conduct the crashworthiness optimization of assembly of bumper, crash box, and front rail. The original materials of bumper, crash box, and front rail were replaced by aluminum alloy 6060, TRIP800, and DP800, respectively. Aluminum foam was filled in bumper to replace the original reinforced plate and also was filled in crash box to increase energy absorption. The comparisons were made between an optimal selection from the multiple materials designs and the single material design. During optimization, crashworthiness criteria were defined as constraint conditions, and response surface surrogate model and genetic algorithm with elite strategy were employed to solve mathematical model of minimum mass. In single material optimization, the result already achieved the energy absorption increased by 10.1%, the peak collision force and the crumple distance decreased by 11.1% and 12.6%, respectively, and the total mass decreased by 11.1%. As for multiple materials optimization, the results obtained further optimal values. It is found that foam-filled bumper can overcome the disadvantage of bumper mid-bending that causes bumper failure of load bearing, and foam filler has the interaction effect with crash box as well, through which it received a significant growth of energy absorption. The application of multiple materials design greatly expands the potential of crashworthiness and lightweight optimization.

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Optimized Design Solutions for Roof Strength Using Advanced High Strength Steels

Chen¹

2010

SAE Int. J. Mater. Manuf.

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AHSS Application in Roof Strength

Cited by 4 publications

References 4 publications

Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members

Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members

Crashworthiness and lightweight optimization to applied multiple materials and foam-filled front end structure of auto-body

Optimized Design Solutions for Roof Strength Using Advanced High Strength Steels

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