Ram Gopisetti
Ansys Employee
The calculation you shows matches to the application of forces of 438053.632N on to an top surface as follows
By application of the gravity load as follows
and the force reaction reads 4.3784e+005 which matches your calculation. So your approach on the calculating the stress on gravity load is wrong or needs modifications. I hope this clears the path for further enhancements.
Cheers, Ram