Multifunctional test system for car body safety

Abstract

A multifunctional test system for car body safety comprises a test bed, a loading control system and a data acquisition and processing system. deformation vectors are measured accurately through an image three-dimensional measuring method, three large devices are replaced, the strength and the rigidity of key parts of side doors, the car roof, bumpers and the like are tested, and the whole test process is collected, represented, analyzed and evaluated. The test bed is applicable to test of passenger cars of various types, and displacement control, loading force control and logical control methods are provided. Side door and bumper tests can be performed when the interchangeable loading device is a column loading device, and the car roof test can be performed through a car body location device when the interchangeable loading device is changed into a plate type loading device. Distribution of yield points can be determined through an infrared thermogram, and the static position before and after the test of the datum point and interpolation moving positions of deformation points can be obtained by arranging laser measurement points. By means of the system, accurate boundary conditions are provided for calculation of theories of finite elements and the like.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to an automobile safety performance test device, in particular to a multifunctional test system for vehicle body safety. Background technique: [0002] Car safety is the most important performance of a car. Automobile collision accidents can be divided into several main types such as frontal collision, side collision, rear-end collision and rollover. According to statistics, side collisions account for about 31% of the total number of accidents, and rollovers also account for a considerable proportion. Moreover, due to the poor lateral rigidity of the vehicle body, occupant injuries are particularly serious. There are generally three methods in the research of automobile passive safety: traffic accident analysis method, theoretical calculation method and test method, among which the test method is the most convincing. One of the main measures to improve the passive safety of automobiles is...

AI Technical Summary

Problems solved by technology

"Reverse design" of the present invention, that is, the loading direction of the flat loader remains unchanged, and the positioning of the vehicle under test can be adjusted. (3) The technical problem that the strength and rigidity of the accessory parts of the vehicle body cannot be measured, and the rigidity of the vehicle body cannot be accurately measured.

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