Week - 9 Material Modeling from Raw Data

Aim: To model a material from raw data and validate the same using dog bone specimen. 

Given Data: 

Procedure: 

• Using the data digitizer, the stress and strain data is obtained from the curve and copied to excel sheet and the unit is converted from ksi to GPa. 
• Now the Effective plastic strain, effective stress are calculated and graph is plotted.

• Now open the dog bone specimen in Ls prepost and create the section card for the dog bone specimen. 

• Create the material card and assign the curve to the material. 

• Assign the material and section card to the part. 

• Assign boundary conditions for the dog bone specimen. One end of the specimen is constrained in all dof and the mid node on the other end is constrained in y dof. 

• Assigning prescribed motion to the specimen. 

• Creating control implict cards. 

• Requesting all the necessary database cards like ASCII, d3plot and extent binary card. 
• Now run the simulation. 

Results: 

Material validation:

• The stress and strain data from the results is used and stress vs strain curve is plotted. 

• The resultant curve exactly matches with the input material curve. 

Conclusion: 

By seeing the resultant curve, it is concluded that the card is working as per the input curve given in Mat024.