Vehicle component real object collision test method and tester

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...

AI Technical Summary

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 impact-resistant and energy-absorbing car bodies

At present, the impact tests on vehicle components are mostly limited to the analysis and research of the results after impact under certain conditions. Since the collision process is a short violent impact, and the development of vehicle component deformation is unpredictable, the current impact test lacks science. sex and objectivity

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