I am trying to calculate the shear modulus of porous RVE.
For now, I am using this formula;
Gxy = {(Sum of reaction force in x direction / Surface Area)} / {(Delta length x / Original length y)}
But, the result is smaller than the correct answer.
If the surface area has a void, do I need to calculate the (surface area - void area)?
In that case, the answer is quiet similar with the correct answer.
Please give me some tips to solve this issue.