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=_______

we have rho = .0078

youngs modulus E= 210000

therefore c = undertoot(rho/E)

undertoot(210000/.0078)

c = 5188.78 mm/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.

length = 1000mm

therefore time takes is delta t= L(t)/C

= 1000/5188.74

= .192725 ms

3. Time for sound to travel the length of rail= time takes for a shock wave to travel from one end of the rail to the other

therefore, Time for sound to travel the length of rail= .192725

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)

The engine file was edited according to the above-calculated values, as shown in the below image

6.Change /print -10.

7.3d meshing tetra mesh and hex mesh

• Target tet size=5mm,hex size=10mm,tet collapse=0.15

Tetra mesh

procedure:

• In the given housing model we want to do 3-d meshing with given quality criteria

1.Import

2. Geometry cleanup

3.Mesh

5. tet collapse

Hexa Meshing

• hex size=10mm

1. Import

• We can divide this solid into 4 parts

1. Base:

• Mesh the base according to criteria with quad elements

2. Arm 1

• For arm 1, we can use spin operation for creating Hexa mesh from shell elements

3. Arm 2

• for arm 2 we used the linear solid method

4. Head

For head, we will use the solid map

Arm bracket