Affiliation:
1. Huaqiao University
2. Xiamen King Long United Automotive Industry Co., Ltd.
Abstract
Based on the middle body frame of a Half-integral bus which a bus manufacturer mainly produces in China, this paper discusses analyses and improvements for rollover security of the bus middle body frame with TRIZ methodology and TRIZ tools. On the basis of forming mechanism of bus rollover, a breakthrough point has been found from cause and effect relationship and function achievements aspect; some customized measures are therefore proposed. It focuses on the stiffness design of side pillars and the strength enhancement of soldering joints. Applying CAE analysis based on Ls-dyna, the results show that the deformation and deformation mode of the bus middle body frame have been greatly improved during bus rollover, which fulfills the requirements of the force of ECE R66 Rollover Security Regulations and validates the correctness of suggested measures.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. ZHOU Xinmei, LAN Fengchong and CHEN Jiqing: Research on analysis and optimization design of coach rollover based on FEM technology, Modern Manufacturing Engineering, 2010, 5: 115-118.
2. Mangado J, Arana J I, Jaren C: Design Calculations on Rollover Protective Structures for Agricultural Tractors. Biosystems Engineering, 2007, 27 (3) : 181 - 191.
3. J.C. Brown: The design and type approval of coach structures for roll-over using the CRASH-D program" Int.J. Vehicle Deign, vol. 11, nos4/5(1990).
4. Taeg Kim: study on the stiffness improvement of bus structure" Society of Automotive Engineers 931995, (1993).
5. James C. Anderson: Rollover Crashworthiness of a New Coach structure" Society of Automotive Engineers, 2001-01-3520(2000).