Multifunctional test fixture for automobile roof beam

Abstract

The invention discloses a multifunctional test fixture for an automobile roof beam. The multifunctional test fixture comprises an upper clamp body, a lower clamp body, bolt holes and bolts, wherein aninclined surface of the upper clamp body is arranged inside the upper clamp body; an inclined surface of the lower clamp body which is fit with the inclined surface of the upper clamp body is arranged inside the lower clamp body; the bolt holes are formed in the positions of four corners of the upper clamp body and in the positions on the lower clamp body aligned with the positions of the bolt holes on the upper clamp body; the bolt holes penetrate through the upper clamp body and the lower clamp body; the bolts penetrate through the bolt holes and are fastened and locked by nuts; the lengthof the upper clamp body is less than the length of the lower clamp body. In the multifunctional test fixture, the inclined surfaces can be fully fit with the inclined surface of a test piece, so thatthe compression load is uniformly transferred to the test piece by a pressure head of a tester in a compression test, the clamping part of the fixture can be prevented from being damaged and the requirements of the compression test for smaller clamping areas and the requirements of three-point bending test for larger clamping areas can be met simultaneously.

Description

Technical field [0001] The invention relates to the technical field of test fixtures, and particularly relates to a multifunctional test fixture for automobile roof beams. Background technique [0002] The car roof beam is an arched structure and is the main load-bearing part in the car roof assembly. The mechanical properties of the roof beam play an important role in the performance of the car roof assembly. [0003] At present, in order to reduce the weight of car roof beams, new materials such as carbon fiber composite materials and magnesium-aluminum alloy beams are often used to replace the original steel beams to achieve weight reduction. Therefore, the test of new material car roof beams has become a car roof An indispensable method in the study of mechanical properties of cover beams. [0004] In order to ensure that the mechanical properties of the carbon fiber composite roof beams are not lower than that of the original steel beams, it is necessary to conduct experimental...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-functional test fixture for the automobile roof beam, which can solve the problem that the existing test fixture field does not have a fixture for completing the axial compression and three-point bending tests of the automobile roof beam, so that the mechanical performance test cannot be normal. ongoing question

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