Topology Optimization for the Light Rail Vehicle Body Based on Sub-Structure Technology

Abstract:

To complete the optimization of large-scale structure such as vehicle body efficiently, a new topology optimization method which combines with sub-structural analysis technology is proposed. With HyperWorks/Optistruct for a platform: first, the finite element model of the light rail vehicle body including sub-structure and non sub-structure is created; second, analyze the most dangerous condition using static reduction method which based on sub-structure technology, output the reduction matrix, generate the sub-structure; and then optimization model is defined including that design variables is the element density, objective function is the minimum volume fraction and constraint is the definition of stress, then enter the reduction matrix, and choose the non sub-structure area for topology optimization; Finally, based on the results, redesign the structure and get the improved one according to the technical requirements and practical experience.

• Periodical: Applied Mechanics and Materials (Volume 367)
• Pages: 145-150
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.367.145
• Online since: August 2013
• Authors: Jia Lian Cao, Jun Yong Li, Chao Yan Wan
• Keywords: Finite Element Analysis (FEA), Hyperworks, Light Rail Vehicle Body, Sub-Structure Technology, Topology Optimization

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