An Application of Body CAE Multi-Attribute Optimization Based on Metamodelbased Optimization Method

Paper #:
  • 2016-01-8123

Published:
  • 2016-09-27
DOI:
  • 10.4271/2016-01-8123
Citation:
Peng, L., Wang, Z., and Gu, J., "An Application of Body CAE Multi-Attribute Optimization Based on Metamodelbased Optimization Method," SAE Technical Paper 2016-01-8123, 2016, doi:10.4271/2016-01-8123.
Pages:
6
Abstract:
Body structure design needs to meet multi-attributes requirements such as global bend stiffness/modal, torsion stiffness/modal, Noise and velocity transfer functions (NTF/VTF), and others. Computer-aided engineering (CAE) is a significant way to enhance the accuracy of design results. However, it also brings computation burden for optimization. In order to improve the performance and reduce the weight of automobile body structure, this paper presents a novel process of body CAE multi-attributes optimization. Four significant phases are described: 1) Sensitivity analysis for each body CAE performance, 2) MDO process, 3) Non-sensitive gauges reducing, and 4) Slightly optimization. Considering the mixed variables in the MDO process including continuous geometry shapes and discrete gauges, the developed continuous relaxation method was employed to deal with such situation. A real application of BIW design was implemented to illustrate the efficiency and contribution of such proposed optimization process. The attributes considered during optimization include global bend and torsion modal/stiffness. The MDO and non-sensitive gauge reducing processes are implemented to lead to a significant weight saving over 7.5 kg.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2011-04-12
Training / Education
1997-05-29
Training / Education
1997-05-29
Article
2016-08-17
Technical Paper / Journal Article
2013-09-24
Technical Paper / Journal Article
2013-09-24
Article
2016-08-17
Training / Education
2006-07-17