Challenge

Assignment 3-2D Element Formulation Challenge

ASSIGNMENT 3: 2D ELEMENT FORMULATION

OBJECTIVE:

To compare simulation results of model with default shell properties and modified shell properties.

MODEL AND RAD FILES:

Rail Model

Starter file

Engine file

PROCEDURE:

Open the Engine file.
Edit and save the Run time as 55ms and the animation steps for 60 frames, which is 55/60= 0.9167ms.

Check for appropriate variations in the OUT(engine) file for energy error and added mass.

Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
Open T01 file in HyperGraph 2D window and plot Rigid wall forces, Internal energy, Hourglass energy, Contact energy and Total energy.

Save the report template.
Import the starter file to Radioss and edit the property cards to the following parameters.

Export the rad file.
Run the analysis as mentioned above.
Check for appropriate variations in the OUT(engine) file for energy error and added mass.

RESULT:

Energy Error and Added Mass

For default shell properties, the energy error reaches -10.3% at the end of the simulation and added mass remains 83.59
Negative value of energy error indicates dissipation due to Hourglass energy.

For modified shell properties, the energy error reaches -0.1% and added mass remains 83.59
In this case the value of energy dissipation is much less which indicates reduced or no Hourglass energy generated.

2)Forces and Energy

For default shell properties,

Total energy slighlty decreases from 6.131E+07
The Hourglass energy reaches 0.6316E+07 Nmm which is indicated by the Energy error -10.3% out of total energy.

For modified shell properties,

Total energy reduction is very small.
Hourglass energy is zero which is indicated by the Energy error out of total energy.

Ship work like this
in your own course.