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Motorcycle Chatter Analysis

Motorcycle Chatter Analysis. Professor Granda ME270 Fall 2007 December 13, 2007 Aaron Courter Daniel Monterrubio. Objective. Background Information Video Demonstration Analysis of Vehicle Dynamics Bond Graph Analysis Expected Results Continued Analysis. Background Information.

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Motorcycle Chatter Analysis

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  1. Motorcycle Chatter Analysis Professor Granda ME270 Fall 2007 December 13, 2007 Aaron Courter Daniel Monterrubio

  2. Objective • Background Information • Video Demonstration • Analysis of Vehicle Dynamics • Bond Graph Analysis • Expected Results • Continued Analysis

  3. Background Information • Engine Braking • Chatter-Vibration • When phenomenon occurs

  4. Video Demonstration

  5. Analysis of Vehicle Dynamics • FBD τEB = Engine Braking Torque FEB = Engine Braking Force on Ground Ff=uN= Frictional Force between Tire and Ground wT=Angular Velocity of Wheel and Tire N=Normal Force • When FEB>Ff Slip Occurs Insert FBD hand drawn

  6. Analysis of Vehicle Dynamics • FBD Cont’ • When Slip Exists, FEB > Ff , Chatter function (Source Flow) is required. FEB-Ffa Chatter Function Input • Assumptions • wT is held constant during deceleration • τEBis decaying input function (TBD) which proportional to the difference of the Vehicle Velocity and the Tire Velocity (v=r*wT)

  7. Analysis Cont’ • Physical Model

  8. Bond Graph Analysis • Bond Graph

  9. Bond Graph Analysis Cont’ • Simulation Input

  10. Expected Results

  11. Continued Analysis • Simulink Analysis • S-Function Analysis • Analysis of Slipper Clutch (Thesis?) • Evaluation of Optimum Spring Constant • FEA (ME 272) • Vibration Analysis • Solid Model Animation

  12. Questions?

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