Influences of Draw Forming Process on the Crash Analysis of a Circular Cup

  • R.M. Amman
  • M.F. Halim
  • D. Sivakumar
  • I. Abu-Shah
  • S.N. Sulaiman
  • H. Samekto
  • S. Subramonian


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.


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How to Cite
Amman, R., Halim, M., Sivakumar, D., Abu-Shah, I., Sulaiman, S., Samekto, H., & Subramonian, S. (1). Influences of Draw Forming Process on the Crash Analysis of a Circular Cup. Journal of Advanced Manufacturing Technology (JAMT), 12(1(2), 547-560. Retrieved from