Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
Volume 234, Issue 20, Pages 4069-4086Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954406220917690
Keywords
Monocoque structure; electric bus; composite materials; finite element analysis; linear programming; bus design
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Funding
- Thailand Research Fund (TRF) [RDG6050041]
- National Research Council of Thailand under the light-weight technology project
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This paper proposes a novel design methodology for electric-bus structures by implementing the finite element method via ABAQUS (TM) and linear programming via MATLAB (TM). A monocoque sandwich-structured fiber-reinforced composite bus with a maximum driving range of 300 km is conceived using the proposed methodology. The bus-body structure is designed based on safety criteria such as vehicle registration regulations, the strength of the bus structure under various driving conditions, bending- and torsion-stiffness requirements, and the rollover testing standard of UN ECE R66. A procedure developed to systematically conduct parametric studies by varying the core and face thicknesses of the sandwich structure of each component is presented. Multivariate functions are formulated to determine the correlations of structural responses with changes in geometric parameters. Linear programming is implemented to minimize the mass of the bus structure under design constraints. The proposed monocoque bus structure meets all requirements, and its body mass is 63.3% less than the benchmark value.
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