Friction plate impact plastic deformation test system

Abstract

The invention discloses a friction plate impact plastic deformation test system. The friction plate impact plastic deformation test system comprises an impact plastic deformation simulation device, astrain signal acquisition module, a strain signal processing module, a high-speed camera, a digital image processing module and a display control module; the impact plastic deformation simulation device directly simulates the contact plastic deformation load caused by the impact contact stress, and friction plate tooth surface contact plastic deformation fatigue damage is re-produced; the high-speed camera captures the motion process picture of an engaged tooth surface under high-speed rotation conditions; the digital image processing module performs digital image technological analysis on themotion process picture, and obtains the tooth surface local strain time process, vibration fracture and impact plastic deformation process; the strain signal acquisition module collects fracture stress and crack propagation velocity information of the friction plate tooth surface part crack propagation local parts; and the display control module displays the information processed by the strain signal processing module and the digital image processing module. According to the test system, the fatigue S-N characteristics of the tooth parts of the friction plates are obtained in a contact and non-contact measurement mode.

Description

technical field [0001] The invention relates to a test system for simulating impact plastic deformation of a friction plate, belonging to the technical field of test equipment. Background technique [0002] During the operation of the vehicle, the shift control element is a key component of the transmission system, and failure problems such as fatigue fracture and fatigue deformation of the contact surface often occur, which seriously affects the braking performance of the vehicle and seriously restricts the life of the transmission device from greatly improving. The load on the teeth of the shift control element is a random load. The test results on the existing friction plate dynamic strength test bench have a relatively large dispersion coefficient, poor comparability, and low data reliability. It is very time-consuming and costly. All load types cannot be decoupled for analysis. Due to the torsional vibration of the shaft system and the floating support structure of the...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the vehicle, the shift control element is a key component of the transmission system, and failure problems such as fatigue fracture and fatigue deformation of the contact surface often occur, which seriously affects the braking performance of the vehicle and seriously restricts the life of the transmission device from being greatly improved.

The load on the tooth part of the shift control element is a random load. The test results on the existing friction plate dynamic strength test bench have a relatively large dispersion coefficient, poor comparability, and low data reliability, which is very time-consuming and costly. All load types cannot be decoupled for analysis

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