Abstract
Based on the finite element theory, the stiffness of an insulated carriage is analysed in this paper. Different from the traditional car, the thermal insulation car puts forward higher requirements for the bending stiffness and torsional stiffness under static and full load conditions. Through the finite element stiffness analysis, the stiffness of the whole frame can be preliminarily determined. The results show that under the bending condition, the tail deformation of the carriage is large and the tail stiffness is insufficient. In the follow-up, it is necessary to improve the tail bending stiffness of the carriage through structural optimization.
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