Topological optimization of automotive structures under impact using robust design Academic Article in Scopus uri icon

abstract

  • © 2015 CAD Solutions, LLC.ABSTRACT: Structure optimization has been widely used within automotive applications. Lighter structures are needed due to their favorable influence on fuel economy, power requirements, top speed, among many other factors. On the other hand, stiff, strong and stable structures are also essential due to how these favor the static and dynamic behavior of the vehicle as well as the safety conditions for the occupants. Previously mentioned properties tend to be oppositely related, reason why optimization is indispensable. In this work the collapse region of a light chassis is optimized using robust design techniques. With the intention of maximizing energy absorption, the number, size and position of collapse triggers are determined considering factors that influence a collision in real-life situations, and cannot be controlled. Such factors include the vertical and horizontal angles of impact as well as variations in the thickness of the material used to manufacture the chassis. From the obtained results, the amount of energy absorbed by the chassis, in non-perfect frontal impacts, can be enhanced using multiple triggers positioned along its collapsible region.

publication date

  • January 1, 2015