Assignment 4-RADIOSS Material Laws Challenge

                                                                           ASSIGNMENT 4: RADIOSS MATERIAL LAWS

OBJECTIVE:

To compare simulation results of a model by assigning different failure card, material card or property card.

MODEL AND RAD FILES: 

                          

                                                                    FE Model with Rigid body

                

                                        Starter rad file                                                          Engine rad file

PROCEDURE:

Case 1: Law2_epsmax_failure

• Import the given starter file to Radioss profile.
• Check every parameters in the given failure, material and property card for recommended values.

                          

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

          

• Check the summary of the Out file for number of cycles and simulation time taken.

           

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

           

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

         

Case 2: Law2_epsmax_crack

• Import the Case 1 starter file to Radioss profile.
• Input the following values in the failure card: ifail_sh= 1, Dadv= 1, Ixfem= 1 

              

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

         

• Check the summary of the Out file for number of cycles and simulation time taken.

          

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

           

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

        

Case 3: Law2_epsmax_nofail

• Import the Case 2 starter file to Radioss profile.
• Remove the Johnson failure card. 

             

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

        

• Check the summary of the Out file for number of cycles and simulation time taken.

         

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

          

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

       

Case 4: Law2

• Import the Case 3 starter file to Radioss profile.
• Removing the failure plastic strain (EPS_p_max) from material card.

           

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

         

• Check the summary of the Out file for number of cycles and simulation time taken.

         

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

           

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

        

Case 5: Law1

• Import the Case 4 starter file to Radioss profile.
• Change the material card to M1_ELAST and keep the same value for Rho, E and Nu as mentioned in Case 4.

         

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

        

• Check the summary of the Out file for number of cycles and simulation time taken.

          

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

         

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

        

Case 6: Law36_epsmax_failure

• Import the Case 1 starter file to Radioss profile.
• Changing the material card to M36_PLAS_TAB and create new Curve for N_funct by assigning the X-Y coordinates.

                                    

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

         

• Check the summary of the Out file for number of cycles and simulation time taken.

        

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

        

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

        

Case 7: Law1

• Import the given Law27_0000.rad starter file to Radioss profile.
• Select recommended shell properties and check the given material card. 

                        

• Under Analysis panel run the analysis and check the results.
• Check for appropriate variations in the OUT(engine) file for energy error and added mass.

         

• Check the summary of the Out file for number of cycles and simulation time taken.

         

• Open the H3D file and apply the Von Mises stress contour plot using HyperView window.

          

• Open T01 file in HyperGraph 2D window and plot Internal energy, Hourglass energy, Contact energy and Total energy.

        

RESULT:

• Hourglass energy is eliminated by assigning recommended shell properties.
• Case 2 represents on-field scenario because it displays the material failure by accounting crack propagation through the ductile material.