Simulation-based design optimisation to develop a lightweight body-in-white structure focusing on dynamic and static stiffness
by Morteza Kiani; Hirotaka Shiozaki; Keiichi Motoyama
International Journal of Vehicle Design (IJVD), Vol. 67, No. 3, 2015

Abstract: Through finite element simulations, static and dynamic stiffness of the body-in-white (BIW) model are investigated. Design of computer experiments through Latin hypercube sampling (LHS) is used to sample the vehicle design space defined by the wall thicknesses of 20 parts. Radial basis function (RBF) is used to generate separate surrogate models for selected responses including bending, torsion, lateral and longitudinal stiffness as well as the fundamental natural frequencies. A non-linear constrained optimisation for mass minimisation is formulated and solved under two different cases. In the first case, the BIW model was optimised under just vibration whereas vibration and stiffness requirements are included in the second case. Results show that the noise-vibration-harshness (NVH) performance of the car improves when both vibration and stiffness requirements are included in the optimisation. This guideline not only reduced the mass but also improved the body structure stiffness (static and dynamic) as the basic criteria of body design.

Online publication date: Mon, 18-May-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Vehicle Design (IJVD):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com