OS-V: 0520 Sandwich Shell

Test No: R0031/3 OptiStruct examines the z deflection at C, Normal XX stress at C, Normal YY stress at C and Shear stress at E for linear static analysis.



Figure 1. FE Model with Boundary Conditions and Loadcases

Benchmark Model

Quad4 elements are used to create Ply laminates and with SMCORE for the simply supported one quarter model. A uniform normal pressure of 200psi is applied on the plate.

The material properties are:
Face Sheets
Ex
10.0 × 106 psi
υ xy
0.3
Ey
4.0 × 106 psi
Gxy
1.875 × 106 psi
Core
Ex
0.0
Gxz
3.0 × 104 psi
Gyz
1.2 × 104 psi

Linear Static Analysis Results

  Target OptiStruct Results Normalized with the Target Value
Laminated Plate (PCOMPP):
Z deflection at C (inches) -0.123 -0.123 1
σ xx at C 34449 34126.09 1.00946226
σ yy at C 13390 13375.11 0.99812263
Τxy at E -5067.5 -5080.6 0.99742156
SMCORE (PCOMPG):
Z deflection at C (inches) -0.123 -0.078 1.57692308
σ xx at C 34449 32578.56 1.05741322
σ yy at C 13390 14508.05 0.9201788
Τxy at E -5067.5 -5327.68 0.95116448

Model Files

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

The model files used in this problem include:
  • compssq4.fem
  • compssq4smcore.fem

Reference

NAFEMS R0031 - Composite Benchmarks, Hardy 2001