Engineering & Analysis Methods > Material Strength Composites: Ply Approach

Interlaminar Tension (AID 204)

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**joaquingut**:

Does Hypersizer calculate the radii used in equation 4.2 (HME Methods and Equations

Composite Strength, Ply-Based) from the mesh? We have to analyze some parts that have variable curvature and this would be very handy.

**James**:

Yes, the radius is computed from the grid locations. The radius of curvature is calculated per component, as described in the following help topic.

https://hypersizer.com/help_7.3/#FE-Shells/shell-buckling_span.php

See "Radius of Curvature Calculation"

The curvature is displayed on the "Buckling" tab and used for interlaminar tension, sandwich flatwise tension and panel buckling.

I hope this is helpful.

-James

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