Udl cantilever beam problem with ansys workbench
 

Consider a cantilever beam of length 500 mm propped at the free end. A uniformly distributed load of strength -2 N/mm acts along the full span of the beam. The cross-section of the beam is square with sides 10 mm x 10 mm and the beam material has Young's modulus 20 GPa. Using ANSYS workbench:
(i) Determine the force and moment reactions at both the supports using:
  (a) Euler-Bernoulli beam analysis (1-D)
  (b) 3-D beam analysis
(ii) Using the tabular deflection data obtained from ANSYS, determine a suitable function for the deflection curve.
Validate the simulation results with the analytical solution.
Repeat the same problem by replacing the udl with a downward point load (-1000 N) acting at the mid-span of this propped cantilever.

I cannot justify my Theoretical Result with Simulation result.Since Theoretical result gives force reaction as 500,500 but Simulation gives out 675,325.Pls help me out

You should verify your theoretical result...

If one end of your beam is cantilevered (translation and rotation are fixed) and the other end is simply supported (translation fixed, rotations free), then an asymmetry is to be expected in the reaction forces.