Flexible shearing-anti-shearing test fixture and shearing testing method thereof

Abstract

The invention discloses a flexible shearing-anti-shearing test fixture which comprises clamp bodies, a pull rod, a guide rod, a linear bearing, a pressing plate and a shearing knife. Meanwhile, the invention also discloses a shearing testing method of the flexible shearing-anti-shearing test fixture. The flexible shearing-anti-shearing test fixture and the shearing testing method thereof have thefollowing beneficial effects: the shearing and anti-shearing tests of a board can be realized without the need to replacing parts; and shearing testing of boards with different thicknesses and thin plates in a thickness direction can be realized. The distance of the shearing knife plane can be adjusted by replacing the fixture shearing knife; and the mechanical properties of the board under the double-load stretching-shearing effect at different distances can be tested. On the basis of the pull rod structure, the fixture can be installed at a universal mechanical stretching testing machine tocarry out shearing and anti-shearing tests. The two clamp bodies employ a reverse symmetric mounting structure and the pull rod is installed at the symmetric central line of the fixture assembly, so that the influence on the test result by the unbalance loading is reduced effectively.

Description

technical field [0001] The invention relates to the technical field of mechanical experiment equipment, in particular to a flexible shear-reverse shear test fixture and a shear test method thereof. Background technique [0002] At present, the method stipulated in the "Shear Test Method for Aluminum Alloy Products for Structural Parts" (GB / T34487-2017) issued by the state can conduct shear tests on plate or cylindrical specimens. However, there are the following shortcomings. First, it cannot meet the test of shearing and reverse shearing of metal materials during use; secondly, it cannot conduct shearing tests in the direction of thickness of thin plates; finally, it cannot simulate the use of plates for connection purposes. The performance test under the double load of tension and shear in the actual working process. [0003] A Chinese patented shear test fixture (Patent No.: CN 104535414 B) is a solution for the interlayer shear strength test of materials, which cannot b...

AI Technical Summary

Problems solved by technology

However, there are the following shortcomings. First, it cannot meet the test of shearing and reverse shearing of metal materials during use; secondly, it cannot conduct shearing tests in the direction of thickness of thin plates; finally, it cannot simulate the use of plates for connection purposes. Performance test under dual loads of tension and shear in the actual working process

[0003] A Chinese patented shear test fixture (Patent No.: CN 104535414 B) is a solution for the interlayer shear strength test of materials, which cannot be used for shear tests of

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