Hi @nishan.japahuge
What simulation software are you using?
Most simulation software does not use the hardness value. Basically, you need to determine how the hardness has any effect on the linear stress simulation, most likely convert the hardness value to a material property that is used in a linear stress simulation (if that even exists), and enter the converted value into the material properties.
Note that Inventor Nastran has its own material input dialogs, so it is not strictly necessary to enter all the material properties in the Inventor material dialogs. In fact, there are many material properties for simulation that cannot be entered in the Inventor material library.
John
John Holtz, P.E. Global Product Support
Autodesk, Inc. If not provided, indicate the version of Inventor Nastran you are using.If the issue is related to a model, attach the model! See What files to provide when the model is needed.