NASTRAN Composite Modeling Test Data

[vorwald]

In order to develop confidence in a modeling approach to composites, it is useful to have experimental data available. Particularly if the experimental setup can be simulated in NASTRAN, and the measured results predicted.

One experiment that I've used to demonstrate NASTRAN's ability to analyze composite is

Ref: “Hybrid Stress Analysis of Perforated Composites Using Strain Gages”, T. H. Baek and R. E. Rowlands, Experimental Mechanics, pp 195-203, Mar 2001.

There's enough info in this report to reproduce the results using NASTRAN. It provides a check on your approach to composite modeling.

 

[SWComposites]

Vorwald,

Are you talking about the ability of the model to predict a) stiffness/displacements, b) stresses, c) buckling load, or d) strength? The first is relatively easy, the second and third items are more difficult, and the last is extremely difficult for composites. Is there a link where the paper you reference can be found?

 

[vorwald]

I don't have a link to the paper.

I'd like to accumulate a collection of papers on measured displacements, stress, buckling, and vibration modes of composite structures.

The stresses in Baek's paper are the far field, azimuthal and radial stresses around a hole in a laminate. I used the report to validate the element size relative to hole diameter that is needed to predict the stress concentration / distribution.

If anyone has any test reports that were used to validate some aspect of composite modeling, please let me know.