Tangential dynamic and static characteristic testing device of unit area faying surface

Abstract

The invention provides a tangential dynamic and static characteristic testing device of a unit area faying surface, comprising a test-piece assembly, a set of tangential loading assemblies and two sets of normal loading assemblies, wherein the test-piece assembly comprises a middle test piece, a left test piece and a right piece; one end of the left test pipe is in surface contact with the side surface A through the round boss A arranged on the end surface of the left test piece; one end of the right test piece is in surface contact with the side surface of C through a round boss B arranged on the end surface of the left test piece; the tangential loading assemblies are arranged at the upper end of the middle test piece; and the two sets of normal loading assemblies are respectively arranged on the left test piece and the other end of the right test piece. The invention has the advantages that the dynamic force acted on the faying surface and the dynamic relative displacement of the faying surface can be directly acquired under the condition of different exciting frequencies and exciting amplitude values, and the introduction of other non-faying surface factors is furthest eliminated.

Description

technical field [0001] The invention belongs to the technical field of test devices for characteristic parameters of mechanical joint surfaces, and in particular relates to a test device for tangential dynamic and static characteristics of joint surfaces per unit area. Background technique [0002] In the design of the mechanical system, it is necessary to determine the performance of the mechanical system of the whole machine. The main factors affecting the performance of the mechanical system of the whole machine are the stiffness and damping of the joint surface. There are more than a dozen factors affecting the characteristics of the joint surface, and they are nonlinear characteristics. The identification test of the actual structure is used to obtain the characteristics of the joint surface. Since the nonlinear characteristics are not universal, they cannot meet the application requirements of innovative design. The characteristic parameters per unit area of ​​the join...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a unit area combined surface tangential dynamic and static characteristic test device, which solves the problem that the existing devices for testing the stiffness and damping of the combined surface cannot reflect the actual force and deformation of the unit combined surface well when obtaining parameters , and the problem that the test conditions cannot meet the actual working conditions of the joint surface

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