Thermo-Mechanical Investigation of a Rotational Friction Joint Under High-Frequency Excitation

被引:0
|
作者
Keller, Simon [1 ]
Fidlin, Alexander [1 ]
机构
[1] Karlsruhe Inst Technol, Inst Engn Mech, Kaiserstr 10, D-76131 Karlsruhe, Germany
来源
PROCEEDINGS OF ITS-IFTOMM 2024 | 2024年 / 160卷
关键词
friction joint; dynamic lubrication; high-frequency excitation; thermo-mechanics; frictional warming;
D O I
10.1007/978-3-031-62616-6_31
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
High-frequency excitation is known to influence systems with friction such that undesired phenomena can be suppressed. In the present publication, a rotational friction joint under axial high-frequency excitation is investigated theoretically, and a corresponding experimental test rig is presented. The focus is on the thermo-mechanical coupling in the system, as friction-induced heat generation can lead to a higher contact pressure, which results in higher friction forces. A coupled model of a linear oscillator and a thermo-mechanical continuum gives insight into the interactions between friction, heat evolution, and vibrations. In the test rig, the necessary torque to supply a constant shaft rotation in a friction bearing is measured. A piezoelectric actuator excites the bearing to axial oscillations. Furthermore, the temperature of the shaft's friction contact is measured by a non-contact pyrometer. A relation between high-frequency excitation, friction torque, and heat evolution can be analyzed this way.
引用
收藏
页码:306 / 315
页数:10
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