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Frictional wear experimental device capable of realizing time-varying positive pressure

A technology of friction and wear and experimental equipment, which is applied in the direction of measuring equipment, testing wear resistance, instruments, etc., can solve the problems of deviation in actual conditions, difficulty in accurately describing the evolution of friction interface, etc., and achieve simple installation, simple structure, and operability strong effect

Active Publication Date: 2021-11-23
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the fact that the loading state of the interface in the traditional friction and wear test often deviates from the actual situation, which makes it difficult for the established wear model to accurately describe the evolution of the friction interface.

Method used

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  • Frictional wear experimental device capable of realizing time-varying positive pressure
  • Frictional wear experimental device capable of realizing time-varying positive pressure
  • Frictional wear experimental device capable of realizing time-varying positive pressure

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Experimental program
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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 and figure 2 As shown, the experimental device of the present invention generally includes a support frame (1), a static specimen module (A), a left support module (B), a right support module (C) and a dynamic specimen module (D).

[0036] The support frame (1) is a frame structure designed with upper, middle and lower beams, and each beam is provided with a moving groove with a width of 16mm; the lower end beam of the support frame (1) is connected to the workbench ( 2) Fixed connection.

[0037] Such as image 3 As shown, the static test piece module (A) includes an adjusting bolt (3), a transverse mounting frame (4), an upper sleeve (5), an upper adapter (6), a piezoelectric actuator (7), a lower Adapter (8), static piece set (9) and static test piece (10). Wherein the adjusting bolt (3) is an M20 bolt, which ...

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Abstract

The invention discloses a frictional wear experimental device capable of realizing time-varying positive pressure. The frictional wear experimental device comprises a supporting system, a friction pair test piece, an excitation system and a measurement system. The supporting system is used for installation and connection of each test device. The friction pair test piece comprises a static test piece and a dynamic test piece, the dynamic test piece is arranged on the sliding rail and can slightly move along the direction of the rail, and the static test piece is restrained and fixed on the supporting frame through a hinge device and a universal ball bearing. The excitation system comprises a vibration exciter for providing relative displacement for the dynamic test piece and a piezoelectric actuator for providing normal time-varying positive pressure for the static test piece. The measuring system comprises a laser displacement sensor, an acceleration sensor and three force sensors. The device has the advantages that the loaded state of the contact interface under the service condition can be reproduced, and the device can be used for analyzing the influence rule of the time-varying positive pressure on the mechanical property evolution of the friction pair interface.

Description

technical field [0001] The invention belongs to the technical field of friction and wear interface characteristics research, and in particular relates to a friction and wear experimental device capable of realizing time-varying normal pressure. Background technique [0002] The phenomena of dry friction and wear widely exist in mechanical systems with assembled structures. There are a lot of contacts at the connecting structures of the mechanical system (such as bolts, flanges, etc.), the supporting and transmission structures (such as gears, bearings, etc.), and some damping structures (shoulder, blade shroud, edge plate damper, etc.) interface. These contact surfaces will form a small relative slip due to the vibration generated by the mechanical system during work, and wear will occur on the contact interface under long-term working conditions. [0003] The friction and wear of the contact interface will change the mechanical properties of the contact surface, such as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/56
CPCG01N3/02G01N3/56
Inventor 吴亚光钱鑫范雨高钱
Owner BEIHANG UNIV
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