Sandwich Panels

[omoreno1]

I am reviewing some composite theory to better understand sandwich panels so that I may compare tested results to theoretical results. I am having diffuclty obtaining the relative density of EPS. Also, in exploring the limit states of panel stiffness, face yielding, face wrinlking, core shear, core fracture, and bond failure. I am finding that the core shear values tend to control the capacity of simply supported panels. The skins are made of Fy = 33ksi 26 gage steel, 4" or 6" thick panels. I applied safety factors related to material strength per AISC specification for steel and safety factors for bond and shear stress per ICC AC4 for Sandwich Panels. I am using the panels in a building application. There is not much literature out there, so I was looking for some more background information, I believe there is a book by H. Allen out there, but I am unable to locate a copy.

 

[JAE]

Could you try to contact someone like this company?

http://www.thermomass.com/

 

[rowingengineer]

review this thread
thread507-264721

Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it

 

[asixth]

'The analysis and design of sandwich panels' by Howard Allen is available from the library at the University of Queensland, but that is probably not helpful to you.

A book which I found helpful was 'Lightweight sandwich construction' by JM Davies which may be more accessible.

Assuming that EPS is expanded polystyrene, the density would vary depending on the supplier. It would be best to contact the supplier of the panels you are looking at and see what they can tell you.

I was speaking with a technical staff at ritek (

http://www.ritek.net.au)

who was telling me something about the core being able to absorb load and therefore gains strength as the loading increases. I also noticed that the shear deformations can contribute quite significantly.

There was a paper published in the Australian Journal of Structural Engineering that I will post and hopefully it will help you out. All units will be metric.

 

[Qshake]

I have the book by Allen and can tell you for certain that it will not be helpful for your application. The material deals entirely with advanced composite materials such as fiber reinforced polymers that use carbon fibers, glass fibers, etc.

I used it in conjunction with a entirely different application.



Regards,
Qshake

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