Transcription of Wheel‐Rail Interaction Fundamentals
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Wheel‐Rail Interaction Fundamentals
1 Wheel rail Interaction FundamentalsKevin Oldknow, , Part 1 The Wheel / rail Interface Anatomy and Key Terminology The Contact Patch and Contact Pressures Creepage and Traction Forces Part 2 Vehicle Steering and Curving Forces Wear and Rolling Contact Fatigue Part 3 The Third Body Layer, Traction/Creepageand Friction Management Frequency Domain Phenomena: Noise and CorrugationsThis three part session will provide an introduction to several fundamental aspects of vehicle track Interaction at the wheel/ rail interface3 Part 1 The Wheel / rail Interface Anatomy and Key Terminology The Contact Patch and Contact Pressures Creepageand Traction Forces4(Very) Basic Vehicle Running Gear Anatomy Wheels Wheelsets Axleboxes Suspension Frame5(Very) Basic Track Anatomy rail Cross
Leading Axle, High Rail (Tread): Angle of Attack → Primarily Lateral Creepage → Lateral Creep Force Leading Axle, High Rail (Flange): R >> R ... 3 degree curveat balance speed. • Wheel / rail profiles and vehicle steering behavior are such that the curve can be considered ...
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