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Study on the Stiffness Improvement of Bus Structure
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 01, 1993 by SAE International in United States
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The structural goal of all vehicles including buses is to increase structural stiffness while reducing the weight as much as possible by improving structural integrity or using the components efficiently.
In this study, the FE BUS model has been analyzed for the maximum stiffness of full structure while maintaining the weight to the same level of the specific bus considered. The analysis model consists of beam elements to represent major structural members of body structure and side rail of under-frame, and thin shell elements representing outriggers of under-frame and skin plate of body structure.
Torsional and bending stiffnesses have been increased simultaneously through redesigning the section property of major components using beam elements. Optimization module of a commercial code has been employed for the analysis.
Although the optimization process for increasing stiffness is not perfect, this study shows the improvement in the torsional stiffness by 15Z, and the bending stiffness by 21% while maintaining the weight at existing level.
CitationKim, T., "Study on the Stiffness Improvement of Bus Structure," SAE Technical Paper 931995, 1993, https://doi.org/10.4271/931995.
- Benett J.A. Nelson M.F. “An Optimization Capability for Automotive Structures” SAE 790972 1979
- Nishio S. Igarashi M. “Investigation of Car Body Structural Optimization Method” Int.J. of Vehicle Design 11 1 1990
- Mogi T. Sugiura K. “Development of Joint Technology of Bus Body Structures” Int.J. of Vehicle Design 5 6 1984
- Kim T. “Study on the Optimization of Bus Body Structure” KSAE 923953 1992
- CAEDS IFES User's Guide, IBM 1991