| VARIABLE CROSS-SECTION RECTANGULAR BEAM AND SENSITIVITY
ANALYSIS FOR LIGHTWEIGHT DESIGN OF BUS FRAME |
| Wenjie Zuo, Jiaxin Fang, Minghui Zhong, Guikai Guo |
| Jilin University |
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| ABSTRACT |
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Timoshenko beam element of variable cross-section rectangular tube is developed and applied in the
lightweight design of bus frame in this paper. Firstly, the finite element formulations of variable cross-section beam (VCB) are
derived under the loadsteps of axial deformation, torsional deformation and bending deformation. Secondly, bending
deformation experiment and its detailed shell finite element model (FEM) simulation of variable cross-section rectangular tube
were conducted; and the proposed VCB, detailed shell FEM and experimental results can be highly consistent. Thirdly, VCBs
are used to substitute for parts of the uniform ones in a bus frame. An innovatively lightweight bus frame is obtained and all
the performance responses are improved simultaneously. Finally, rollover analysis further shows the advantage of variable
cross-section bus frame in crashworthiness design. |
| Key Words:
Variable cross-section beam, Beam element, Lightweight design, Bus frame |
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Corresponding Author.
Wenjie Zuo , Email. 
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