A Comprehensive Study of Self-Induced Torque Amplification in Rotary Viscous Couplings

[+] Author and Article Information
Sankar K. Mohan

Advanced Engineering, New Venture Gear Inc., 6600 NVG Drive, East Syracuse, NY 13057

Bandaru V. Ramarao

State University of New York, Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210

J. Tribol 125(1), 110-120 (Dec 31, 2002) (11 pages) doi:10.1115/1.1504087 History: Received February 21, 2002; Revised June 13, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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Viscous coupling—general details
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Torque, temperature, and pressure traces
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Self-induced torque amplification in flow cells (STA sequence)
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Viscosity as a function of shear rate
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Calculated and experimental results for shear torque
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Calculated shear torque as a function of inner plate axial position
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Simplified geometry of the plate tab
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Calculated tab deflection and axial force
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Deflected geometry of inner plate tab
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Separation of air at the low pressure side of the tabs
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Plate cell geometry and leakage flow
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Experimental and calculated results of pressure rise
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Experimental and simulation results for torque during STA process
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Schematic experimental setup




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