Mechanical Friction with Simulink and Physical Modeling

Modeling and simulating mechanical friction in the Simulink® and Physical Modeling environment

Description

Stephen Lunzman (Caterpillar), Dallas Kennedy and Steve Miller (The MathWorks)

Systems modeled include clutches, transmission, and pistons. The friction is continuous or hybrid continuous-locking type. Locking friction requires mode iteration and algebraic loops.

MATLAB Digest article linked to this submission: http://www.mathworks.com/company/newsletters/digest/2008/may/friction.html

NOTE: If you receive MATLAB® command line warnings upon opening these models in a later version of Simulink, resave, close, and reopen the models in the later version.

• Acknowledgements: This submission has inspired the following:; Physical Modeling of Mechanical Friction
• Required Products: SimDriveline; SimMechanics; Simscape; Simulink
• MATLAB release: MATLAB 7.5 (R2007b)
• Other requirements: - continuousPiston and lockingPiston depend on SimMechanics. - continuousClutch3 and multiClutch depend on SimDriveline. - JPGs needed as support files for two models - M-file script for use with continuousPiston, which must be loaded first
• Other Files: continuousClutch1.mdl, ; continuousClutch2.mdl, ; continuousClutch3.mdl, ; continuousPiston.mdl, ; continuousPiston_fricCoeff.jpg, ; license.txt, ; lockingPiston.mdl, ; lockingPiston_diagram.jpg, ; multiClutch.mdl, ; plotFrictionCurve.m

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