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.



図 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

必要なモデルファイルのダウンロードについては、モデルファイルへのアクセスを参照してください。

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

Reference

NAFEMS R0031 - Composite Benchmarks, Hardy 2001