Page 9 - ASME JRC 2019 Program

© 2019 M. Ahmadian Mehdi Ahmadian Seminars

Dan Pletta Professor of Mechanial Engineering 1

Director, Railway Technologies Laboratory Introduction & Basics
Center for Vehicle Systems and Safety
Virginia Tech

April 12, 2019

Rail System Dynamics

Introduction to Rail System Dynamics

Module 1: Introduction and Basics Module 3: Wheelset Kinematics and
Dynamics
– Introduction
– Axis and Coordinate Systems – Dynamics of an Unconstrained
– Dynamic Terminology Wheelset
– Wheel, Rail, and Track Basics
– Dynamics on Tangent Track
Module 2: Wheel-Rail Contact – Hunting Dynamics
Mechanics & Dynamic – Curving Dynamics
– Curving Forces
– Introduction to Wheel-Rail Dynamics – Curving Energy
– Hertzian Contact Theory
– Rolling Friction Module 4: Case Study
– Contact Patch
– Track Model – Effect of Wheel/Rail Forces on Wheel
Climb Derailment

© 2019 M. Ahmadian Rail System Dynamics 2

Introduction & Basics

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