Carbon fiber composite vehicle body structure and design method thereof

Abstract

The invention discloses a carbon fiber composite vehicle body structure and a design method thereof, and the method comprises the steps: taking a design space, a non-design space, a constraint condition, a calculation condition and an optimization target as the input of simulation software, and creating a vehicle body topological optimization structure model; and performing iterative calculation on the vehicle body topological optimization structure model by using a variable density method to obtain a vehicle body structure force transmission path meeting constraint conditions and working condition requirements under different material utilization degrees, and obtaining an optimal vehicle body structure configuration according to the force transmission path. The design method of the input parameters is given, it is ensured that the needed structural configuration can be obtained, and the simulation efficiency and the simulation precision are improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a carbon fiber composite car body structure and a design method thereof. Background technique [0002] Compared with the wheel-rail train, the maglev train is suspended on the track by electromagnetic force, the car body has no contact with the track, no friction loss, easy operation and maintenance, and is a new type of transportation. High-speed maglev trains, medium and low-speed maglev trains are more economical, less difficult to construct, and have less environmental noise, making them very suitable for intercity rail transit. Since maglev trains rely on suspension force to travel, compared with wheel-rail trains that land directly on the ground, maglev trains put forward higher requirements for the weight of the car body. The optimal design of car body structure and the application of new lightweight materials are necessary development directions for car body lightwe...

AI Technical Summary

Problems solved by technology

[0006] At present, in the train car body with cab structure made of carbon fiber composite materials, the hollow integral carbon fiber cab hood used can not bear the longitudinal impact force of 800KN at the cab, and because the carbon fiber composite material itself has the effect of sound insulation Disadvantages in noise reduction and fire prevention. The current carbon fiber body structure has not yet achieved coordination and unity in the three aspects of structural bearing, sound insulation and noise reduction, and fire prevention.

In the field of maglev trains, there are no reports of maglev train bodies made of carbon fiber composite materials.

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