Influences of draw forming process on the crash analysis of a circular cup

Dhar Malingam, Sivakumar and Mohd Amman, Rosmia and Samekto, Haryanti and Mohd Ab Halim, Mohd Firdaus and Abu Shah, Ismail and Sulaiman, Saiful Naim and Subramonian, Sivarao (2018) Influences of draw forming process on the crash analysis of a circular cup. Journal of Advanced Manufacturing Technology (JAMT), 12 (1(2)). pp. 547-559. ISSN 1985-3157

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The change of a structural part that occurred after forming process can affect crash response. Current industrial practice only utilizes the geometry in crash analysis. This study investigates the effect of forming histories of a circular cup formed by draw forming process in the crash simulation. Crash analysis at an initial velocity of 50km/h was performed using the explicit finite element code Radioss. The Johnson-Cook constitutive material model was used to characterize the material properties of advanced high strength steel DP600. Crash simulations are conducted in two different cases using a geometrical cup model with case 1 no forming history and case 2 all forming histories obtained from forming process. Results from this study indicate that the mechanical response of steel DP600 in a crash differ by 80.7 % for contact force and 5.87% for energy absorption when forming effects were considered. The contact force tends to increase more with displacement in case 2 compared to case 1. The non-uniform thickness and work hardening from forming process do alter significantly the crashworthiness of a structural part in the subsequent crash event.

Item Type: Article
Uncontrolled Keywords: Draw forming, Circular cup, Crash analysis, Steel DP600
Subjects: T Technology > T Technology (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Mechanical Engineering
Depositing User: Mohd Hannif Jamaludin
Date Deposited: 25 Jul 2019 04:11
Last Modified: 26 Jun 2023 14:58
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