Reference no: EM132584777
ENER2001 Introduction to Railway Engineering
Task 1 - Wagon design
1. Choose a total weight of your four-axle freight wagon between 80 and 120 tonnes.
2. Choose a total length of the freight wagon between 10 and 12 metres.
3. The wagon consists of the following component masses:
- One loaded car body with an approximate weight of 80% of your total wagon weight (including the payload);
- Two bogie frames. Each bogie frame is 7.5% of your total wagon weight; and
- Four wheelsets. Each wheelset is 1.25% of your total weight.
4. Assume reasonable dimensions for all components and provide sketches with dimensions for each component and the wagon overall.
5. Write a code in Matlab to calculate mass and inertia parameters for all bodies.
6. Fill out the results obtained in the Table below:
|
PARAMETER
|
VALUE
|
UNITS
|
|
Car body mass
|
|
kg
|
|
Mass moment of inertia of car body about X axis
|
|
kgm2
|
|
Mass moment of inertia of car body about Y axis
|
|
kgm2
|
|
Mass moment of inertia of car body about Z axis
|
|
kgm2
|
|
Mass of bogie frame
|
|
kg
|
|
Mass moment of inertia of bogie frame about X axis
|
|
kgm2
|
|
Mass moment of inertia of bogie frame about Y axis
|
|
kgm2
|
|
Mass moment of inertia of bogie frame about Z axis
|
|
kgm2
|
|
Mass of wheelset
|
|
kg
|
|
Mass moment of inertia of wheelset about X axis
|
|
kgm2
|
|
Mass moment of inertia of wheelset about Y axis
|
|
kgm2
|
|
Mass moment of inertia of wheelset about Z axis
|
|
kgm2
|
|
Other dimensions
|
|
|
|
Longitudinal distance from the mass centre of car body to the mass centre of front and rear bogie frames
|
|
m
|
|
Semi lateral distance between left and right secondary
suspensions in a bogie
|
|
m
|
|
Height between the mass centre of car body and bogie frame
|
|
m
|
|
Height between the mass centre of wheelset and the bogie frame
|
|
m
|
|
Semi longitudinal distance between wheelsets in a bogie
|
|
m
|
|
Wheel radius
|
|
m
|
7. Please add your personal reflections for this task. You are asked to identify critical learning events that have happened during the work on the task and to cover the following self-evaluation questions:
- What actually happened?
- Have you experienced any impact on you personally during the work on this task?
- What did you learn from this task?
- Have you identified areas to develop further?
8. Submit your Brief Report 1 that includes the description of work performed, all wagon data calculated, sketches and a Matlab code.