compare the results
compare the results
(OP)
If someone it's practice with abaqus i have this problem.
I have modeled a circular plate with thickness of 0.0005 m and a pressure applied on a ring area between r=4.5 mm and r=5 mm of 0.5 N/m^2. The 3 translations at the border are blocked (U1=0,U2=0,U3=0)
I solved the problem in two different way:
3D analisys with the whole plate and a pressure on a ring area.
axisymm analisys (than modeling the 2D profile of the plate) with a Force concentrated F=7.4613E-06 (equal to the pressure) applied at r= 5mm that is the same of the analitycal problem.
my problem is that I have found very similar results for the numerical solutions but a different results compare to the analitycal solution and with an other numerical solution (Nastran)
this perblem is not difficult to model especially for people that use abaqus frequently than I would ask if anyone try to solve then we can compare the results for displacment and stress
thanx
I have modeled a circular plate with thickness of 0.0005 m and a pressure applied on a ring area between r=4.5 mm and r=5 mm of 0.5 N/m^2. The 3 translations at the border are blocked (U1=0,U2=0,U3=0)
I solved the problem in two different way:
3D analisys with the whole plate and a pressure on a ring area.
axisymm analisys (than modeling the 2D profile of the plate) with a Force concentrated F=7.4613E-06 (equal to the pressure) applied at r= 5mm that is the same of the analitycal problem.
my problem is that I have found very similar results for the numerical solutions but a different results compare to the analitycal solution and with an other numerical solution (Nastran)
this perblem is not difficult to model especially for people that use abaqus frequently than I would ask if anyone try to solve then we can compare the results for displacment and stress
thanx





RE: compare the results
What is the diameter of the plate?
Regards
Martin
RE: compare the results
Martin
RE: compare the results
diameter of the plate is 7.5 mm
thickness= 0.5 mm
ring where the presssure is apply have external diameter=5 mm
internal diametr=4.5mm In the 2D axisymm solution I have modeled a concentrated force equal to the pressure on the ring in r=5mm because is equal to the analitycal model)7.4613E-06 N
E=3GPa
POisson modulus=0.3
thanx nikko
RE: compare the results