Effect of Multi-Material Substitutions on Static and Dynamic Properties of Electric Vehicles

Abstract:

Automotive weight reduction is a challenging task due to many performance targets that must be satisfied simultaneously, in particular in terms of static and dynamic properties direct relating to strength, stiffness and NVH characteristics of vehicles. Compared to all-steel vehicle frame, multi-material substitutions are adopted in each structural component for higher product performance and a lightweight electric vehicle frame in this paper. The SHELL63 element is selected to construct finite element (FE) model of vehicle frame based on the FEA software ANSYS. Under full bending loading and torsional loading respectively, static analysis of frame is performed, and the strength and stiffness are evaluated as well. The Block Lanczos is adopted for dynamic analysis of vehicle frame. Their first eight modal properties are obtained and far away exciting frequency range of rough road. The multi-material vehicle frame has been designed to be made of mild steel, aluminum and magnesium alloys. Its static and dynamic properties show that the strength, stiffness and NVH characteristics are better than ones from all-steel vehicle frame with weight reduction of 31.7%. These procedures will help to design a lightweight and thus to provide technical support for reducing fuel consumption and greenhouse gas emissions.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 1402-1407
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.1402
• Online since: June 2012
• Authors: Li Li Yu, Zhen Hua Su, Jing Zhan Lin, Yu Sen Yuan, Chun Xiang Cui, Ling Yu
• Keywords: Electric Vehicle Frame, Modal Analysis, Multi-Material Vehicle, NVH, Static and Dynamic Analysis

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