Open AccessForensic Engineering Determination Of The Angle Of Lean Of A Cycle-Rider System Negotiating A Turn
Author(s) -
James M. Green,
J. B. John
Publication year - 2004
Publication title -
journal of the national academy of forensic engineers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.102
H-Index - 1
eISSN - 2379-3252
pISSN - 2379-3244
DOI - 10.51501/jotnafe.v21i1.624
Subject(s) - centrifugal force , radius , turning radius , turn (biochemistry) , fictitious force , gravitation , engineering , balance (ability) , mechanics , center of gravity , trajectory , mechanical engineering , aerospace engineering , physics , computer science , classical mechanics , physical medicine and rehabilitation , medicine , computer security , management , nuclear magnetic resonance , rotational speed , astronomy , economics
For A Cyclist To Negotiate A Turn, They Must Lean The Bicycle To The Inside Of The Corner In Order To Balance The Centrifugal Force Associated With The Change In Velocity And The Gravitational Force From Gravity. The Vector Sum Of These Two Forces Will Be Directed Between The Center Of Gravity Of The Rider And The Contact Patch Of The Tire On The Road Surface. The Force On A Rider During A Turn Is Dependent Upon The Radius Of The Turn, And The Velocity Of Travel. The Lean Angle Of The Cyclist Is Determined By The Alignment Of The Centrifugal Force And The Riders Weight So As To Have The Gravitational And Inertial Forces Directed From The Center Of Mass Of The Rider To The Contact Patch Of The Tire On The Road. This Force Balance Gives The Basic Equations For The Turning Phenomena. The Analysis Then Gives The Relationship Of The Factors Of A Rider In A Turn As A Function Of Speed, Radius Of Curve And The Angle Of Lean. The Purpose Of The Analysis Is To Give The Forensic Engineer The Ability To Reconstruct The Limits Of The Turning Movement Of A Cyclist In An Accident Scenario.