Assignment 5-RADIOSS Interfaces & Study of Effect of Notches Challenge

ASSIGNMENT 5: RADIOSS INTERFACES & STUDY ON EFFECT OF NOTCHES

AIM:

1. To mesh the given Bumper assembly model.
2. To modify and compare the effect of notches on the given Crash tube model.

1) BUMPER MODEL:

PROCEDURE:

• Check the surfaces and edges for connectivity.
• Toggle the surface with single edges together using Quick edit panel.

• Intersect the surfaces by trim option in Surface edit panel.

• Mesh the whole model surfaces with mesh size as 6 units.
• Adjust the node numbers for proper quad elements.

• Connect the assembly using spot-weld elements.

Final Model:

2) CRASHTUBE MODEL:

PROCEDURE:

• Import the given starter file to Radioss profile.
• Open the Solver section in Browser and create a TH/PART card for all the components.

Case 1:

• The given model contains Type7 interface with Inacti=0.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

Case 2:

• Import the Case 1 starter file to Radioss profile.
• Activate the Inacti=0 under Type7 interface.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

Case 3:

• Import the Case 2 starter file to Radioss profile.
• Create Type11 interface and select the components in the model.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

Case 4:

• Import the Case 3 starter file to Radioss profile.
• Remove the notches on the model using Align nodes option in Node edit panel .

• Delete the Boundary Conditions card from the Solver tab.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

Case 5:

• Import the Case 4 starter file to Radioss profile.
• Create a notch in the mddle of the model using Elem offset panel.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

Case 6:

• Import the Case 4 starter file to Radioss profile.
• Create notches on the opposite faces in the mddle using Elem offset panel.

• Under Analysis panel run the analysis and check the results.
• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.
• Open T01 file in HyperGraph 2D window and plot Rigidwall forces, Internal energy and Contact energy.

RESULT:

• Case5 : Crash tube with middle notch has produced less Rigidwall-force and lowest Internal energy.
• Case4 : Creash tube without notches has lowest Contact energy due to no boundary condition and flat surface.