Assignment 2-RADIOSS Engine File Editing & 3D Meshing Challenge

1. Check the material properties of the rail component and calculate the speed of sound in steel raiL

c = √ ( 21000/0.0078) c= 5188.74 ms.

2. The length of the rail is about 1000 mm. calculate the time takes for a shock wave to travel from one end of the rail to the other. Time taken,

△T => L/c => 1000/5188.74 => 0.1927ms.

3. Time for sound to travel the length of rail= 0.1927ms

4. Edit the engine file so that the stress wave can be monitored, moving from one end of the rail to the other during an 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) change to 0.1927ms instead of 60ms as shown below,

5.Set the frequency of animation output to a time that will give 20 animation steps(/ANIM/DT) Tfrequency = Termination time / Total no. of steps Tfrequency = 0.1927/20 Tfrequency = 0.0096. Now, change this Tfrequency into an engine file as shown below.

6.Change /print -10.

ARM BRACKET

HOUSING

1D ELEMENT