Comparing the simulation results of the base setup and improved shell element properties

1.Now go to view-Browsersand check solvers

2.Search for engine keywords from the tree in solver and click on the Run and change the value of Tstop to 55 Ms

3.You can also edit the value by opening the element formulation shell -3 assignment _0001.rad file in notepad from 60 ms to 55 ms

4. Now you will get 25-60 animation files

5.Now open Element formulation shell -3-Assignment -0001.out File to check mass and energy errors are less than 2 % and 15 % respectively

6. Now open Hyperview and select Element Formulation Shell-3 Assignment H3dFile.

7.Select Contour Von Mises And apply

8.

CASE- 2

Now change properties of the file as per recommended

Recommended Properties :

I shell =24 QEPH 4 noded are best combination of Cost and accuracy

I smstrm =2 Full geometric non linearities with possible small strain formulation activation in radioss Engine

I sh2n = 2 Standard 3 noded shell

N = 5 Number of integration points set to 5 for accuracy bending

I thick =1 thickness change is taken into account for accuracy

I plastic =1 Ilterative plasticity for good accuracy

Comparsion:

1. the energy error in Case -1 is 10.3 % whgich is more than case -2 ie is -0.1 % and the mass error is for both the cases

2. In the VOn mises contour plot we can observe that the node at which maximum von mises stress occurs has changed from 706 in case -1 to 708 in case 2

3.The internal energy and kinetic energy is more linear in case 1

4. the kinetic Energy is not zero because of energy error but if may become zero if the ru time is more than 55 ms

5.The hour glass energy is more in case 1 as compared to case 2

Results and Conclusion:

1. To get Effective results we have changed the property values as recommended

2. Compared base result with improved shell element property results

3.Plotted different graphs in hypergraph 2D for comparsion