Amit,
Can you confirm the value of stress that concerns you and its location?
My memory of the results I got was in the order of 20MPa. This is small.
Patrick, I know this contradicts your conclusions but I got the same displacement as Jonathan.
The radial displacement of the external surface I got was measureable in microns. This is small.
The internal surface diameter cannot change as it is fixed.
Something's a bit strange and I am concerned one, both or all of us have unit problems.
Some statistics from the model you uploaded for checking, I have highlighted the first one for special attention:
- Pressure load is applied to the external surface only = 784532 Pa or 0.78 MPa
- External surface diameter = 267 mm
- External surface width = 48 mm
- Rim internal diameter = 251.12 mm
- Internal surface FULLY fixed
- Internal hub diameter = 170.4
- Hub thickness between 15 and 30mm
- Material = STEEL (approximately) with E=205GPa, nu=0.25
Ignoring fully fixed internal surface, Lame says Hoop on the internal surface will be about -14 MPa
Radial stress can go no higher than the applied pressure.
Dimensions seem 'reasonable' for something resembling a brake drum.
Are you sure your pressure is correct? 0.78MPa is very small please check this.
What is the application?
Regards