Method and device for simulating automobile collision complex curve

Abstract

The invention discloses a method and a device for simulating an automobile collision complex curve, aiming at overcoming the defect of the prior art and providing the method and the device which have simple structure and convenient installation and can simulate the automobile collision complex curve. In the method, a metal pipe can be expanded by a collision bar to generate expansion deformation when the metal pipe is subjected to the action of the collision bar with the diameter greater than the internal diameter of the metal pipe, energy is absorbed by expansion to slow down a trolley, and a required wave curve is generated. The device comprises a barrier wall, the trolley and an energy-absorbing component. When the simulating trolley collides with the barrier wall, the trolley collides with the front end of the collision bar; and when the collision bar is collided into an expansion energy-absorbing pipe after being stressed, the impact energy of the simulating trolley is absorbed in the process of expansion, thereby one resistance is provided to the simulating trolley, and different resistances enable the simulating trolley to generate different collision simulating curves. The invention is used for inspecting and developing the safety components of the automobile and simulating the collision of the real automobiles.

Description

technical field [0001] The invention relates to a waveform reproducing device for an automobile collision simulation platform used for safety research, test and inspection of vehicles. Background technique [0002] In order to increase the safety performance of the vehicle and most reliably design the strength and stability of various facilities in the vehicle, as well as inspect and develop safety components, before putting into production, a dynamic test should be carried out on the safety performance of the vehicle to evaluate the frontal collision. The comprehensive strength and impact performance of each test part during the test is completed by reproducing the deceleration waveform and time relationship curve during the crash and the simulation test method of the speed during the crash. In order to make the test results more accurate, a real car is sometimes used in the test, but the real car is basically scrapped after the test is completed, which makes the test price...

AI Technical Summary

Problems solved by technology

But find after several years of using, this invention also has some weak points, mainly shows in: 1. when simulating the collision curve, especially when the automobile of some economic models, because the collision process of economical automobile is more violent, so The resulting collision curve changes greatly, that is, the gradient of the collision curve is very large, and the existing technology is difficult to simulate such a large gradient curve due to the relatively smooth deformation of the energy-absorbing tube; 2. When the weight of the trolley increases , the number of required guide rods and energy-absorbing tubes must also be increased proportionally. If there are too many energy-absorbing tubes, it is difficult to ensure the consistency between them, which makes the whole simulation more difficult and the repeatability of the obtained crash simulation curve decreases.

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