OS-V: 0085 Plane Strain: Analysis of Pressure Vessel
This problem examines the expansion of a pressure vessel due to an internal pressure. OptiStruct examines the principal stresses in the pressure vessel, due to the applied loading and boundary conditions.
Figure 1. FE Model of with Boundary Conditions and Loadcases
Benchmark Model
Quad4 Plane Strain elements are used to model the quarter symmetric slice of the pressure vessel of radius 0.1m and thickness 0.020m. Internal pressure of 10,000 Pa which is converted to force and applied on the nodes of the inner surface of the pressure vessel. A Linear Static analysis is performed on this model.
- Material Properties
- Value
- Young's Modulus
- 207 x 109 Pa
- Poisson's Ratio
- 0.27
Linear Static Analysis Results
| Model | Hoop Stress (Pa) |
Radial
Stress (Pa) |
|---|---|---|
| Theoretical | 55455 | -10000 |
| OptiStruct | 54710 | -9205.6 |
| Normalized | 1.013 | 1.086 |
Figure 2. First Principle Stress (Hoop Stress)
Figure 3. Third Principle Stress (Radial Stress)
Model Files
Refer to Access the Model Files to download the required model file(s).
The model file used in this problem includes:
/Pressure_Vessel_LS.fem