Defining Vertical Cylinder as Composite Shell To define the vertical cylinder of the T-Joint as a composite shell: In the Partial study tree, right-click the vertical cylindrical shell SurfaceBody 2(Surface-Extrude2) and click Edit Definition. In the PropertyManager, under Type, select Composite. Under Composite Options: Set Total Plies to 8. Select All Plies Same Material and click Select Material . In the Material dialog box, do the following: Right-click the tjoint folder under Custom Materials and click New Material. For Model Type, select Linear Elastic Orthotropic. Set Units to SI - N/m^2 (Pa). Enter Composite1 for Name. Set Default failure criterion to Unknown. Enter the following material properties for the composite shells: Property Value Elastic Modulus in X 40e9 Elastic Modulus in Y 10e9 Elastic Modulus in Z 10e9 Poisson's Ratio in XY 0.26 Poisson's Ratio in YZ 0.25 Poisson's Ratio in XZ 0.26 Shear Modulus in XY 4.5e9 Shear Modulus in YZ 4.0e9 Shear Modulus in XZ 4.5e9 Mass Density 1900 Tensile Strength in X 1060e6 Tensile Strength in Y 30e6 Compressive Strength in X 600e6 Compressive Strength in Y 120e6 Shear Strength in XY 70e6 Yield Strength 2.7e8 The ply angle direction for each ply in the X direction is highlighted with a white arrow on the geometry. The Y direction is transverse to the ply angle direction (on ply surface). The Z direction is normal to the ply surface and is highlighted with a blue arrow. Click Apply and Close. Parent topic Failure Analysis of a Composite Joint (Simulation Premium only) Previous topic Opening the Part Next topic Completing the Definition of the Vertical Cylinder