OS-V: 0435 Clamped Thick Rhombic Plate
Test No. FV22 The behavior of distorted, thick elements in normal modes analysis is examined using OptiStruct.
Benchmark Model
The 4-node quad elements with 10x10 mesh configuration are used to model the thick rhombic plate. The x-translation, y-translation displacements, and z-rotational displacements are fixed for all of the nodes. In addition, the z-translation, x-rotational and y-rotational are fixed for the nodes along the four edges.
- Property
- Value
- E
- 200 x 109 N/m2
- 0.3
- 8000 kg/m3
Modal Analysis Results
f*
- Closed form solution
Mode 1 | Mode 2 | Mode 3 | |||
---|---|---|---|---|---|
f* CQUAD4 |
133.95 Hz 0.9937 |
f* CQUAD4 |
201.41 Hz 1.0382 |
f* CQUAD4 |
265.81 Hz 1.0633 |
Mode 4 | Mode 5 | Mode 6 | |||
---|---|---|---|---|---|
f* CQUAD4 |
283.68 Hz 1.0006 |
f* CQUAD4 |
334.45 Hz 1.1073 |
F[HOE] CQUAD4 |
386.62 Hz 1.0403 |
Model Files
The model file used in this problem includes:
<install_directory>/hwsolvers/demos/optistruct/verification/fv22.fem
Reference
NAFEMS Ltd, The Standard NAFEMS BENCHMARKS TNSB Rev. 3, NAFEMS Ltd, Scottish Enterprise Technology Park, Whitworth Building, East Kilbride, Glasgow, United Kingdom, 1990.