I want to calculate the properties of composite sandwich structures. I have the formulae for fibre composites but I cannot find anywhere for the sandwich structures. If anyone knows where can I find these formulae for the calculation of different properties of composite sandwich structures?
For a sandwich structure, you could use the parallel composite model to calculate the modulus or stiffness assuming that the sandwich contains microlayers of individual materials.
You can probably find this information in:
- T. Bitzer, Honeycomb Technology 1997
- J. R. Vinson, Plate and Panel structures 2005
The stiffness can be calculated with the equation shown in the picture attached.
Strength would be more complicated to estimate since there are several failure modes for sandwich structures (facing failure, transverse shear failure, local crushing of core, etc.), and these will depend on numerous parameters.
https://www.sciencedirect.com/search?qs=stiffness%20and%20strength%20of%20composite%20sandwich%20structures&show=25&sortBy=relevance
You may also want to have a look at:
Carlsson and Kardomateas, Structural and Failure Mechanics of Sandwich Composites, Springer, 2011
https://www.springer.com/gp/book/9781402032240
Regards,
Take a look at this reference
Book Structural and Failure Mechanics of Sandwich Composites
let me know if you have access to the full text or no
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