OS-V: 0050 Skew Plate Normal Pressure
Test No. LE6 OptiStruct examines the maximum principal stress on the lower surface at the plate center point E for linear static analysis.
Figure 1.
Benchmark Model
Quad4 and Quad8 elements are used to create a uniform mesh on the skew plate with 4 elements as coarse mesh and 16 elements as fine mesh. The plate is simply supported at all the four edges. A Normal pressure of -0.7 KPa is applied on the face of the plate in the vertical z-direction.
The material properties are:
- Young's Modulus
- 210 x 103 MPa
- Poisson's Ratio
- 0.3
Linear Static Analysis Results
All results are normalized with the target value (0.802 MPa).
| Quadrilateral Shell | Maximum principal stress on the lower surface at the plate center point E (MPa) | Normalized with the Target Value |
|---|---|---|
| Quad8 coarse | 0.8294 | 0.96696407 |
| Quad8 fine | 0.7869 | 1.019189224 |
Model Files
The model files used in this example include:
<install_directory>/demos/hwsolvers/optistruct/verification
- /le6quad8c.fem
- /le6quad8f.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.