Assignment 2-RADIOSS Engine File Editing & 3D Meshing Challenge
Question 1
Check the material properties of the rail component and calculate the speed of sound in steel rail=_______
Answer
From the material properties given in the Rail model
Density Rho: 0.0078 g/mm^3 Speed of the sound is Square root of young's modulus / Density
Youngs modulus: 210000 N/mm^2 square root of 210000/0.0078 = 5188.7452(speed of sound through steel)
Question 2
The length of the Rail is about 1000mm calculate the time taken for a shock wave to travel from one end of the Rail to other.
Answer
Time taken for sound wave to travel through length Time t=length/Speed of sound through steel Rail
Time t=1000/5188.7452=0.1927
Question 3
Time for sound to travel length of rail
Answer
The length of the rail measured is 1001.249 mm the speed of the sound through rail is 0.19311
Question 4,5 & 6
4.Edit the engine file so that the stress wave can be monitored, moving from one end of the rail to the other during impact -this will require a termination time equal
to the time it takes for the sound to travel the length of the rail(set on/RUN card)
5.Set the frequency of animation output to a time that will give 20 animation steps(/ANIM/DT)
6.Change /print -10.
Answer
changed parameters
Comparison of Engine files
Modified Input
Results Comparison
Modified Input
Energy plots
Modified
Input
