Study of the Interactions Between Friction, Wear and System Rigidity

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Report Number: DOE/ER/10471-1
Author(s): Aronov, V., D'Souza, A. F., Kalpakjian, S., Shareef, I.
Corporate Author(s): Illinois Institute of Technology
Laboratory: U. S. Department of Energy
Date of Publication: 1980-03
Pages: 46
Contract: DE-AC02-79ER10471
DoD Task:

Progress to date in this project has consisted of the following activities. After an extensive study of various possible systems for friction, wear and vibration measurements, a pin and disk sliding system has been designed to be used on a rigid lathe bed. This versatile design has the capability of controlling the applied load, rigidity and damping of the total frictional system. The design and construction of the pin holding assembly has been completed with certain features to render it suitable for acquisition of appropriate data such as forces and displacements. Special instrumentation has been obtained the major components of which are a tri-axial quartz piezoelectric , force transducer, a tri-axial ceramic piezoelectric accelerometer for measurements of vibrations of the slider, charge preamplifiers with DC power supply, and monitoring equipment such as a spectral analyzer and an oscillograph. Preliminary experiments indicate that the system, as designed and constructed, is appropriate for the type of study undertaken in this project. Some preliminary experimental results are included here. The method of describing functions and harmonic balance is being employed for the study of friction induced selfexcited vibrations. Some new developments of this method have been obtained to take into account the couplin~ between the degrees of freedom in the normal and frictional directions.

Provenance: IIT

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