Optimization method for outer windshield structure of high-speed train, and outer windshield structure

Abstract

The invention discloses an optimization method for an outer windshield structure of a high-speed train, and the outer windshield structure. The optimization method comprises the following steps: defining an outer windshield structure design space according to the geometric boundary dimension of the section of an original outer windshield structure, performing topological optimization design on thedesign area to obtain a topological optimization design result, performing geometric reconstruction and modification on the topological optimization design result to obtain a topological optimizationouter windshield structure section, comparing the topologically optimized section of the outer windshield structure with the section of the original outer windshield structure for verification, if the section of the outer windshield structure meets the lightweight design requirement, finishing optimization, and if the lightweight design requirement is not met, returning to the geometric reconstruction and modification step for iterative design and comparative verification. According to the optimization method and the outer windshield structure, under the condition that the mass of an originalstructure is not increased, the transverse rigidity of the outer windshield structure is improved, the drag reduction effect of the installed outer windshield structure is better, the transverse deformation resistance is improved, and the lightweight design requirement of the outer windshield structure is met.

Description

technical field [0001] The invention relates to the technical field of high-speed train outer windshield structure design, in particular to an optimization method for a high-speed train outer windshield structure and the outer windshield structure. Background technique [0002] High-speed trains refer to passenger trains with a maximum running speed of not less than 250 kilometers per hour. As an important component of high-speed trains, the outer windshield structure is installed at the junction of the ends of the two carriages, making the surface of the car body smooth and smooth, reducing drag and noise for high-speed trains played an important role. Moreover, the rubber outer windshield has better flexible deformation ability. When the train passes the curve, the outer windshield is deformed by extrusion to provide the displacement between the two cars when the train passes the curve. When the train runs straight, the outer windshield continues to play a role in reducing...

AI Technical Summary

Problems solved by technology

However, these improvement measures have no obvious effect on improving the lateral deformation resistance of the outer windshield, and the weight of the original structure is increased in the process of reinforcing the outer windshield, and the structural assembly is complicated

When the original outer windshield is assembled, there is a depression between the rubber arcs on the top of the outer windshield at the opposite end of the car. The existence of the depression causes the air to flow through here and generate a vortex, which weakens the effect of aerodynamic drag reduction and noise reduction on the outer windshield.

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