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Friction plate impact plastic deformation test system

A test system and friction plate technology, which is applied in the field of test systems for simulating the impact and plastic deformation of friction plates, can solve problems such as low data reliability, fatigue fracture, time-consuming and costly, and achieve high safety by avoiding accidental touch by personnel , Versatile effect

Active Publication Date: 2019-12-13
CHINA NORTH VEHICLE RES INST
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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

Method used

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  • Friction plate impact plastic deformation test system
  • Friction plate impact plastic deformation test system
  • Friction plate impact plastic deformation test system

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] as attached figure 1 As shown, the present invention provides a friction plate impact plastic deformation test system, which includes an impact plastic deformation simulation device, a strain signal acquisition module, a strain signal processing module, a high-speed camera, a digital image processing module, and a display and control module;

[0035] The impact plastic deformation simulation device can directly simulate the contact plastic deformation load caused by the impact contact stress, and reproduce the contact plastic deformation fatigue damage of the tooth surface of the friction plate;

[0036] The high-speed camera takes pictures of the movement process of the meshing tooth surface under the condition of high-speed rotation;

[0037] The digital image processing module conducts digital image technology analysis on the motion process pict...

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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...

Claims

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Application Information

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IPC IPC(8): G01M13/02G01M7/02G01M7/08
CPCG01M7/00G01M7/08G01M13/02
Inventor 汪银风杨喆杨玲玲胡铮张万昊魏延鹏兰海王志勇韩明宁克焱
Owner CHINA NORTH VEHICLE RES INST
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