Hello, I have solved the above error. Now, I applied the pre-stress. First, i want to know, whether it has imported the stress values correctly. So, i haven't applied any boundary conditions that might cause any deformation or any stresses.Then, I ran the simulation. Now, I can able to observe the deformation due to pre-stress. But, the deformation/deflection of the body due to pre-stress is opposite to that of the actual deformation. What is the reason behind this?