Lumped parameter modeling of two dimensional mechanical and acoustical components

2021 ◽  
Vol 150 (4) ◽  
pp. A95-A95
Author(s):  
Carter J. Childs ◽  
Stephen C. Thompson
Keyword(s):  
Two Dimensional ◽  
Lumped Parameter ◽  
Lumped Parameter Modeling

Lumped Parameter Modeling of a Magnetorheological Fluid Clutch

2006 ◽  
Author(s):  
John C. Ulicny ◽  
Daniel J. Klingenberg ◽  
Anthony L. Smith ◽  
Zongxuan Sun
Keyword(s):  
Mathematical Model ◽  
Physical Properties ◽  
Magnetorheological Fluid ◽  
Input Current ◽  
Fluid Composition ◽  
Fluid Temperature ◽  
Temperature Range ◽  
Lumped Parameter ◽  
Lumped Parameter Modeling ◽  
Fan Speed

A lumped-parameter mathematical model of an automotive magnetorheological (MR) fluid fan clutch was developed. This model is able to describe the average fluid temperature, average clutch temperature, and output fan speed as a function of time, input current, and fluid composition. The model also reproduces numerous features of fan operation observed experimentally and revealed a mechanism for some observed cases of hysteresis. However, it fails to capture certain other features which lead us to conclude that phenomena which are not included in the model, e.g., sedimentation and re-suspension, are important to the clutch behavior. In addition, the results indicate that certain physical properties need to be measured over a larger temperature range in order for the model to better predict the clutch behavior.

A Hybrid Lumped-Parameter and Two-Dimensional Analytical Thermal Model for Electrical Machines

2021 ◽  
Vol 57 (1) ◽  
pp. 246-258
Author(s):  
Dawei Liang ◽  
Z. Q. Zhu ◽  
Yafeng Zhang ◽  
Jianghua Feng ◽  
Shuying Guo ◽  
...  
Keyword(s):  
Thermal Model ◽  
Electrical Machines ◽  
Two Dimensional ◽  
Lumped Parameter ◽  
Analytical Thermal Model

Lumped-Parameter Modeling of Visco-Elastically Coupled Rigid Bodies Using Clifford’s Biquaternions

2000 ◽  
Author(s):  
Ernest D. Fasse
Keyword(s):  
Computer Simulation ◽  
Rigid Bodies ◽  
Elastic Coupling ◽  
Potential Utility ◽  
Dual Quaternions ◽  
Lumped Parameter ◽  
Lumped Parameter Modeling

Abstract This work considers the problem of modeling visco-elastically coupled rigid bodies, with application to modeling and computer simulation of spatial, flexural mechanisms. A method of modeling visco-elastic coupling based on Clifford’s biquaternions (dual quaternions) is presented. The potential utility of the method is demonstrated by simulating the behavior of a complex spatial, flexural mechanism.

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