Design and optimisation of hybrid material bumper beams under impact loading

Öztürk, İsmail

doi:10.1080/13588265.2020.1858626

Cited by 11 publications

(2 citation statements)

References 28 publications

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“…Öztürk İ. [9] in his study, in order to determine the bumper design that will result in the highest SEA (specific energy absorption) and an acceptable PCF (peak crushing force) performed frontal collision analyzes using 1, 2 and 3 mm sheet thickness values and AA6061-T6, AA2024-T351 and DP800 sheet metal materials (3 homogeneous and 6 combined types). The crash analyses were performed by hitting the 1500 kg weight rigid wall to the fixed vehicle finite element model at a speed of 50 km / h in accordance with the Euro NCAP full width frontal impact test standards.…”

Section: Introductionmentioning

confidence: 99%

Crash Analysis and Size Optimization of a Vehicle’s Front Bumper System

Aşkar

Ermiş

2021

International Journal of Automotive Science and Technology

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Bumper beams and crash boxes are structural vehicle elements that have very critical functions during frontal collisions. This study examined the energy ab-sorbed by the front bumper system and the reaction forces to the cage structure representing the vehicle cabin frame during a full frontal crash against a rigid wall. For this purpose, 25 different crash analyses were conducted using the ANSYS software by changing the sheet thickness values of the bumper beam (t1) and crash boxes-frontal crash rails (t2) that make up the front bumper system. The internal energy (absorbed energy) of the front bumper elements from the analysis results and the reaction forces acting on the representative cage struc-ture in the opposite direction to the movement were examined. When the ob-tained data were interpreted according to variable thickness, it was observed that the variable t2 significantly affected both the absorbed energy and reaction force results, while the variable t1 did not have a significant effect on the results. Based on this, the thickness value t2 was determined as the design variable of the size optimization problem. When the optimization problem established with the reac-tion force and absorbed energy constraint functions was solved, the optimal t2 thickness value with the highest absorbed energy / peak reaction force ratio was found.

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Section: Introductionmentioning

confidence: 99%

Crash Analysis and Size Optimization of a Vehicle’s Front Bumper System

Aşkar

Ermiş

2021

International Journal of Automotive Science and Technology

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“…Studies on the design of vehicle structural components focus on lighter designs but have higher crash safety and will meet legal requirements. Thin-walled structures are widely used for these purposes [1][2][3][4]. Crash boxes are thin-walled structures and are positioned behind the front bumper for less damage to the passenger compartment in the event of a frontal collision.…”

Section: Introductionmentioning

confidence: 99%

Design of multi-cell tailored property columns under oblique loading

Öztürk

2021

International Journal of Automotive Science and Technology

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In this study, the crashworthiness performance of a multi-cell column designed from B1500HS boron steel with three different hardness values and six different regional hot-formed designs were compared in terms of passenger safety. Energy absorption and peak crushing force values of the columns were examined by impact simulations under oblique loading. “T25 heat-treated column” gave the highest energy absorption value, while "O25 heat-treated column" gave the lowest peak crushing force value. Regional hot-formed columns’ energy absorption and peak crushing force values resulted in between these two homogeneous heat-treated columns, except for the fifth and eighth designs. It has been shown that regional hot forming has a significant effect on the crashworthiness performance of the multi-cell columns under oblique loading.

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