I have one more doubt. 

For this analysis , i have used FR4 properties given in Ansys mechanical database. FR4 is an othrotropic material but i found one for observation that shear modulus is calculated assuming it as isotropic material.

Please see the properties sheet attached from ansys database.

My PCB is made of Isola 370HR material for which i don't have mechanical properties hence i used ansys FR4 properties.

Can someone provide me the mechanical properties of Isola 370HR?

Thanks in advance.