After successful completion of the course, students are able to...
derive an appropriate numerical model for railway vehicles
derive the load ssumtions for car body, bogie, equipment attachments, wheelsets
know the basics for the standards applied for load assumptions, strength and validation programs of structural components of railway vehicles
evaluate the results from finite element analyses
validate the crashworthiness performance of railway vehicles
specify structural testing (static, fatigue, crash)
validate numerical models via comparison of numerical results with test results.
- Structural requirements for railway vehicles
- Derivation of load assumptions
- Static strength requirements
- Fatigue strength assessment
- Stability
- Structural Integrity of the car body:
- Finite Element Modelling
- Requirements according to EN 12663-1
- Evaluation of deformations and stress states
- Static compression test of car body
- Validation of model with test results
- Passive Safety of Railway Vehicles:
- Requirements and collision scenarios according to EN 15227
- Modelling
- Evaluation of criteria: Survival zone, deceleration rate, overriding
- Dynamic Test
- Validation of model
- Bogie frame:
- - Loads according to EN 13749
- - Modelling
- - Static test according to EN 13749
- - Ebndurance test
- - Validation of model with test results
- - On-track testing
- - Load collective for planned life of vehicle
- - Fatigue assessment
- Wheelset:
- Load assumptions for the wheelset axle
- Strength proof for wheelset axle
- Torsional oscillations – testing and assessment
- Fracture Mechancis: Crack growth analysis for wheelset axles
- Strength proof for wheel
- Case Studies
Discussion of standards for load assumptions, strength, passive safety
Group work to derive the finite element modelling of car bodies and bogies
Case studies for the evaluation program of car bodies
Case studies for the evaluation program of bogies
Case studies for the evaluation program for passive safety
Case studies for the evaluation program of wheelsets
oral examination immediately after the lecture - script may be used to prepare the answer (approximatly 10 minutes preparation time for each question)
alternative. written examination to be defined individually
