Vehicle component real object collision test method and tester

A crash test and vehicle component technology, which is applied in the direction of railway vehicle test, machine/structural component test, measuring device, etc., can solve the problems of lack of scientificity and objectivity of crash test, non-repeatable, large-scale vehicle test, etc.

Active Publication Date: 2009-05-13
CENT SOUTH UNIV
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Problems solved by technology

However, due to the large scale and high cost of the vehicle test, it cannot be repeated as a destructive test, and the actual product is required, so the posterior test is generally used; for vehicle energy-absorbing parts (including load-bearing energy-absorbing structures and special energy-absorbing parts) Carrying out physical crash tests is the main basis for designing imp

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  • Vehicle component real object collision test method and tester
  • Vehicle component real object collision test method and tester
  • Vehicle component real object collision test method and tester

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Embodiment Construction

[0035] The vehicle component object collision test method is to carry out a collision test on the 1:1 vehicle component object, and obtain the deformation, acceleration, impact force versus time curve of the component during the collision process and the speed at the moment of impact contact. The vehicle parts to be impacted are fixed on the front end of the carrying trolley. The carrying trolley can be driven along a track by a drive system. The drive system can use an electromagnetic speed-adjustable motor as power, and the running speed of the carrying trolley can be controlled by acceleration control. keep improving. In this process, the PID controller can be used to continuously increase the power of the electromagnetic speed-adjusting motor, so that the input speed of the motor continues to increase, so that the running speed of the carrying trolley continues to increase. The running speed of the carrying trolley will be controlled by the speed controller or Other measur...

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Abstract

The invention discloses a test method for real object crash of vehicle components and a test device thereof. The test method comprises the following steps: the vehicle components are fixed on a carrying trolley which can move on a track, the speed of the trolley is increased to a test value by traction with a drive system before preparing for crash an impact wall; when the carrying trolley moves to a set position before the impact wall, a trigger device is started to detach the drive system from the carrying trolley, a test component and the carrying trolley are caused to crash the impact wall without drive power; a vehicle-borne acceleration test system is arranged on the carrying trolley so as to complete data acquisition in real time; and the trigger device triggers a speed test system, an impact force test system and a high-speed camera system at the same time. The test method of the real object crash of the vehicle components and the test device can help measure objective data in real time such as the impact force, a transient acceleration, component deformation and speed output at the moment of crash, and further can record deformation sequence images of the components during the whole crash course so as to get scientific and exact analysis results.

Description

technical field [0001] The invention belongs to the technical field of structural crashworthiness research of vehicle parts, and in particular relates to a collision test method and a test device for carrying out physical collision tests on vehicle parts, especially vehicle energy-absorbing parts. Background technique [0002] At present, there are three methods to study vehicle large deformation collision: theoretical research, physical experiment and numerical simulation. Theoretical research can grasp the essence of the problem and provide some directional suggestions for physical experiments and numerical simulation modeling, but relatively speaking, theoretical research requires a lot of simplification, and the results are rough. The physical test verification is indispensable in the whole research, but the physical test requires a lot of manpower, material and financial resources, and is extremely dangerous. Such as automobiles, etc., can still be subjected to real ve...

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Application Information

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IPC IPC(8): G01M17/08G01M7/08
Inventor 田红旗姚松高广军张健鲁寨军刘堂红
Owner CENT SOUTH UNIV
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