Assignment 3-2D Element Formulation Challenge

OBJECTIVE

To Comparison of results with base simulation and improved shell element properties under the given criteria by 

• CASE 1-Run the base simulation without any modification to element properties.
• CASE 2-Run the base simulation with element properties.

PROCEDURE

CASE 1

• First, create a new folder on the desktop.IN that create a case 1 and case 2 folder.
• Then copy-paste the engine file and starter file in it.
• Open the Hypermesh software with Radioss.
• Import by using the import solver desk option.
• 
• Then change the Tstop time to 55ms in the cards engine run-time option.
• 
• And change Tstart-3ms and Tfreq-1ms in the cards engine animation time option.
• 
• Then go to Radioss in the analysis panel.
• 
• And save as the input file in the case 1 folder starter file.
• And give radioss to solve the file.
• 
• At the end of the simulation, do the energy error and mass error checks.
• For that go to the case 1 folder in that starter file is open in the note pad.
• Error <0 to -15 is acceptable.other than this is not acceptable.
• 
• After the radioss job is completed click the result option. and it takes to the hyper view software.
• 
• The collision of the beam on the wall can be shown in it.
• After that, we want to  Plot rigid wall forces, internal energy, hourglass energy, contact energy, the total energy of the simulations in the hypergraph 2D option. 

CASE 2

• First, create a new folder on the desktop.IN that create a case 1 and case 2 folder.
• Then copy-paste the engine file and starter file in it.
• Open the Hypermesh software with Radioss.
• Import by using the import solver desk option.
• 
• Then change the Tstop time to 55ms in the cards engine run-time option.
• 
• And change Tstart-3ms and Tfreq-1ms in the cards engine animation time option.
• 
• 
• Then give the element property to components.
• 
• Then go to Radioss in the analysis panel.
• 
• And save as the input file in the case 1 folder starter file.
• And give radioss to solve the file.
• 
• At the end of the simulation, do the energy error and mass error checks.
• For that go to the case 2 folder in that starter file is open in the note pad.
• Error <0 to -15 is acceptable.other than this is not acceptable.
• 
• After the radioss job is completed click the result option. and it takes to the hyper view software.
• 
• The collision of the beam on the wall can be shown in it.
• After that, we want to  Plot rigid wall forces, internal energy, hourglass energy, contact energy, the total energy of the simulations in the hypergraph 2D option. 

COMPARISION

CASE1                                                                                                                                              CASE 2

• Hour glass energy
• Case1 without element property and case2 with element property.
• We can see the high in case 1 because of QEPH ELEMENT formation.
• This has be improve using physical stabilization to reduce the hourglass energy.
• case 2 energy is all most equal to zero because of Ishell24.
•  
• RIGID WALL
• In case1 without element property the force decrease is uneven.
• In case2 the force decrease is constantly reduce due to the Iplas and Ismstr.
•   
• TOTAL ENERGY
• In case1 we clearly see that the total energy loss is more because of high hourglass energy.
• But in case2 it is almost flattering because of less hourglass energy.
• While using element property the loss is very minimum.
•   
• CONTACT ENERGY
• In case 2 the Iplas is not taken it only capture the yield point only.
• In case 2 we use the Ismstr 2 and Iplas is 1 thus it capture the large deformation with high accuracy so capture all deformations.
• And due to Iplas is 1 solver calculate the strain deformation even though after the yield point is reached.
• Thus the graph differs to each other.
•   
•  

CONCLUTION

   Thus the Comparison of results with base simulation and improved shell element properties under the given criteria. And compared the energy graph.