OS-V: 0750 Radial Stretching of a Cylinder
Illustrates the use of asymmetrical elements (CTAXI) under uniform radial displacement in OptiStruct.
Benchmark Model
The inner and outer radii of cylinder are 4.0 and 6.0 respectively. A mesh of 20*20 elements is used to model the axisymmetric model with first and second order CTAXI elements. The cylinder base is constrained in axial direction, inner edge is constrained in radial direction and a radial displacement is enforced using SPCD along the outer edge of cylinder.
- Young's Modulus
- 2 x 1011 Pa
- Poisson's Ratio
- 0.3
- Density
- 1,000 kg
Results
Below radius 5m, the results of 2nd order CTAXI elements are an excellent match with analytical solution, and above 5m, the results of 1st order CTAXI elements are a better match to analytical solution.
Model Files
The model files used in this problem include:
- /Radial-streching-cylinder-CTAXI-1st-order.fem
- /Radial-streching-cylinder-CTAXI-2nd-order.fem