Testing device and testing method for dynamic characteristic of joint curved surface faying surface

Abstract

The invention provides a testing device and a testing method for dynamic characteristics of joint curved surface faying surfaces. The testing device comprises an excitation system, a loading system, a test bench system and a signal acquisition, analysis and processing system, wherein the excitation system consists of a vibration exciter, an exciter hanging beam and a bracket; the loading system consists of a loading bolt A, a loading spring A, a loading bolt B, a loading spring B, a loading bolt C, a loading spring C, a loading bolt D and a loading spring D; the test bench system comprises a pedestal, a lower bridge plate, a block to be tested and an upper bridge plate; and a computer in the signal acquisition, analysis and processing system sends out a known excitation signal to make the vibration exciter excite vibration, acquires a response signal in the system for calculation, and obtains dynamic characteristics of the joint curved surface faying surfaces. The testing device and the testing method can achieve the purpose of measuring dynamic characteristics of joint curved surface faying surfaces of various kinds of different materials, and have the advantages of good interchangeability, simple operation and reliable data.

Description

technical field [0001] The invention relates to the dynamic characteristic test of the joint surface of the joint surface. The known excitation signal is used to excite the joint surface of the joint surface, and the response signal is collected to obtain the dynamic characteristics of the joint surface. It is suitable for comparative research on the joint surface joint of different materials. The invention relates to a dynamic characteristic of a surface, belonging to the technical field of dynamic characteristic testing of an articulating curved surface combined surface. Background technique [0002] With the development of industry, the requirements for the precision of mechanical equipment are getting higher and higher. At the same time, the exploration of various new materials is getting deeper and deeper. A large number of joint surfaces exist in the mechanical structure, and they are the weakest part of the mechanical structure. Link, its dynamic characteristics such ...

AI Technical Summary

Problems solved by technology

[0003] At present, curved joint surfaces widely exist in various mechanical structures, such as spherical joints in mechanisms, bearing rollers, etc. For curved joint surfaces made of different materials, their dynamic characteristics can be obtained, and by comparison The performance of the surface joint surface made of different materials plays a vital role in practical applications, but there is no solution for such problems in engineering applications

The dynamic characteristics of the traditional curved surface joint surface are often obtained by analogy with the plane joint surface of the same material. Due to the inherent structural characteristics of the curved surface joint surface itself are relatively complex, the dynamic characteristics of the plane joint surface of a certain material cannot completely replace it. Due to the dynamic characteristics of the curved surface joint surface, the error of this method is relatively large; in addition, although some test benches can meet the dynamic characteristics test of the curved surface joint surface, they do not have good interchangeability, that is, the same test bench cannot test different The dynamic characteristics of the joint surface of the joint surface of different materials, the cost of the test bench is high, and the interchangeability is poor

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