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. FE Model with Boundary Conditions and Loadcases

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:
Material Properties
Value
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

Refer to Access the Model Files to download the required model file(s).

The model files used in this problem include:
  • le6quad8c.fem
  • le6quad8f.fem

Reference

NAFEMS R0015 - Selected benchmarks for natural frequency analysis