Construction method and system for train scaling equivalent model applied to collision experiment

A technology of scale model and collision experiment, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the complex problems of scale model construction, reduce the cost of experiments, simplify nonlinearity, and reduce complexity Effect

Active Publication Date: 2018-03-13
CENT SOUTH UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for constructing a reduced-scale equivalent model of a train for collision experiments, so as to solve the problem in the prior art that the reduced-scale model is complex

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  • Construction method and system for train scaling equivalent model applied to collision experiment
  • Construction method and system for train scaling equivalent model applied to collision experiment
  • Construction method and system for train scaling equivalent model applied to collision experiment

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Embodiment Construction

[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0027] The train collision scaling criterion of the technical solution proposed by the invention is based on multi-mass rigid body dynamics. And only consider the mechanical characteristics of the one-dimensional longitudinal impact of the train, simplify the vehicles that make up the train to a single mass point, set the strength of the car body as a rigid body, and do not participate in the deformation during the impact process, so the geometry of the train shape is ignored in the scale model Similarity in size and body material strength. Since the mass of the coupler buffer device, the crush tube and the honeycomb energy-absorbing device between the cars is much smaller than that of the train body, the mass of the energy-absorbing parts between t...

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Abstract

The invention relates to the field of train collision experiments, discloses a construction method and system for a train scaling equivalent model applied to a collision experiment and aims to solve the existing technical problem that scaling model construction is complicated. According to the method, following the principle that a scaling model and an actual train impact acceleration are consistent, integral conversion is performed on a kinetic equation under the condition of not considering damping to obtain scaling factors of train mass and impact force and scaling factors of train speed and time; scaling criteria are formulated according to the scaling factors of the train mass and the impact force and the scaling factors of the speed and the time; and according to the scaling criteria, parameters of the scaling model are determined to construct the scaling model.

Description

technical field [0001] The invention relates to the field of train collision experiments, in particular to a method for constructing a reduced-scale equivalent model of a train used in collision experiments. Background technique [0002] The operational safety of high-speed railways is the primary issue of common relations among countries all over the world. Train passive safety protection technology is one of the key technologies. Due to the long formation and heavy weight of the train, it carries huge impact kinetic energy. When a collision occurs, it is very easy to cause accidents such as climbing, penetration, derailment, and overturning, which will cause extremely serious casualties and economic losses. [0003] Due to the special way of connecting high-speed trains, there are problems such as the impact damage of a single car and the coupling and mutual collision between vehicles during the collision process. Even with identical towbars and energy-absorbing elements...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/367G06F2119/06
Inventor 高广军于尧关维元
Owner CENT SOUTH UNIV
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