Rubber Material Model Development for Closure Bumpstop

Satish Jayant Choudhari; Kameswara Rao Appana; Nilesh Alugade; Roshan N. Mahadule

doi:10.4271/2020-01-1073

In vehicle development process, closures slam durability is one of the important measurement for body in white and closure design. In closure slam simulation event, the majority of dynamic forces absorbed through rubber seals and rubber bump-stops, which are typically mounted in-between the closure system and body in white (BIW). These auxiliary components also provide the cushioning to the structure and protect it from the panel interaction during abusive closure slam.

In conventional computer aided engineering (CAE) simulation process, the stiffness of rubber bumpstop is often represented with linear stiffness data, which does not capture the rubber behavior for static and dynamic loading/unloading. Thus, it is necessary to develop the numerical material model for better rubber behavior simulation.

This paper details the study of rubber bumpstop material behavior under static and dynamic loading/unloading using various material model approach. The developed material model further increases the overall accuracy of CAE simulation and minimize the overall product development time and cost

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Rubber Material Model Development for Closure Bumpstop 2020-01-1073

SAE MOBILUS