Define the Ply Material

Define the linear elastic material for the ply section.

Helius PFA cohesive materials can be used in the same model with standard (ply based) Helius PFA materials. In fact, the ability of the tool to robustly determine solutions for analyses that have both intralaminar (fiber and matrix damage) and interlaminar (delamination) is one of its main advantages. Since the focus of this tutorial is the demonstration of the cohesive functionality of Helius PFA, the ply material response will be linear elastic (i.e. failure is not permitted to occur in the plies). Refer to Tutorial 1 for a demonstration of the ply-based failure capabilities.

The material properties for the linear elastic ply material are given below. This material is used to define the ply section, not the cohesive section.

E = 150 GPa

v = 0.263

1. On the Properties tab, click the Isotropic button.
2. On the Materials form specify Create, Isotropic, Manual Input and name the material 9001.
3. Click the Input Properties button and enter an Elastic Modulus of 150000.
   Note: Since we are using dimensions of Newtons and millimeters, 150 GPa should be entered as 150000.
4. Enter a Poisson Ratio of 0.263 and click OK.
5. Click Apply.