Browse Publications Technical Papers 2015-01-1365

Development of Smart Design Process for Light Weight Body in White 2015-01-1365

This paper describes a new approach and specific design procedure for more lightweight automotive Body in White (BIW) design.For a BIW structure with a target value for static stiffness, joints with high stiffness sensitivity are selected and a lightweight BIW joint design chart is produced from calculations combining topology optimization and thickness optimization.Using this chart made it possible to theoretically assign an optimum spring value to the BIW structure for the purpose of lightweight design, enabling substantial weight reduction in the base model while maintaining the same stiffness performance.Moreover, we found that by applying other load cases together with static stiffness, such as dynamic stiffness and local stiffness, and following a design procedure that utilizes their interactions, significant weight reduction can be achieved in comparison with the conventional design process that adds each product characteristic individually to a BIW structure satisfying static stiffness.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.