The purpose of this test is to validate orthotropic elements properties. You will use an isotropic biased plate and an orthotropic analog plate, computed with a 2D mesh. 

Reference: M. JONES, Mechanics of Composite Materials, Hemisphere publishing corporation, pp250254, 1975. ASHTON JE, An Analogy for Certain Anisotropic Plate, Journal of Composite Materials, pp355358, April 1969. 

SpecificationsGeometry Specifications

Isotropic plate:


Orthotropic plate:


Mesh Specifications: 

Restraints (User defined): 
Plates 
Analytical 
Linear Triangle (TR3) 
Parabolic Triangle (TR6) 
Linear Quadrangle (QD4) 
Parabolic Quadrangle (QD8) 

Computed Results 
Normalized 
Computed Results 
Normalized 
Computed Results 
Normalized 
Computed Results 
Normalized 

Biased Isotropic 
1.907 
1.988 
1.048 
2.011 
1.055 
1.933 
1.013 
1.977 
1.037 
Analog Orthotropic 
1.907 
1.900 
0.996 
1.931 
1.012 
1.908 
1.001 
1.884 
0.988 
To Perform the Test:
The Isotropic_biased_plate_QD4.CATAnalysis document presents the complete analysis on an isotropic biased plate, computed with a mesh formed of linear quadrangle elements (QD4).
The Orthotropic_analog_plate_QD4.CATAnalysis document presents a complete analysis on an orthotropic analog plate, computed with a mesh formed of linear quadrangle elements (QD4).
To compute the case with other meshes (TR3, TR6 and QD8), proceed as follow:
Open one of the CATAnalysis documents.
In the Advanced Meshing Tools workbench, replace the mesh specifications as indicated above.
In the Generative Structural Analysis workbench, compute the case.