An Application of Body CAE Multi-Attribute Optimization Based on Metamodelbased Optimization Method Changan Automobile Engineering Institute

Format:

Conference/Event

Author/Creator:

Peng, Peng, author.

Contributor:

Gu, Jiantao

Wang, Zhuo

Conference Name:

SAE 2016 Commercial Vehicle Engineering Congress (2016-10-04 : Rosemont, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractBody 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

Notes:

Vendor supplied data

Publisher Number:

2016-01-8123

Access Restriction:

Restricted for use by site license