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

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=_______

First, we have to check the material properties of the rail component. import the file in Radioss and check for the material properties.

Import the model

After importing the model, check the material properties to know about the youngs modulus (E) and density (rho)

calculate the speed of sound in steel rail (e) = Square root of youngs modulus (E) by density (rho)

youngs modulus (E) = 210000

density (rho) = 0.0078

the speed of sound in steel rail (c) = √E/ρ

= √ 210000 / 0.0078

= 5188.74 m/s

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.

Element time step = length / speed of sound

length = 1000 mm

speed of sound = 5188.74 m/s

Element time step for 1000mm or 1 meter = 1/5188.74

= 1.927250160925388e-4

3.Time for sound to travel length of rail = 1.927250160925388e-4

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.

7.3d meshing tetra mesh and hex mesh

• Repeat class examples and, maintain the quality.
• Target tet size=5mm,hex size=10mm,tet collapse=0.15.

import the model

hex size=10mm

tet collapse=0.15.

import the model 2

Target tet size=5mm

tet collapse=0.15.