Prevost XLII Skin Delamination Repair

[davidbrady]

(05-05-2017 01:01)Hisham Amaral Wrote:  David
You are having too much fun with this, you have to remember that at .2%strain you are in the none linear ranger or start of the yield as you continue to strain the spacemen. Overall great results I was trying to add stress strain curve but was to taking the copy past. I am sure you can get the plots I am talking about. from the internet.

Good point Hish. Here's the strain percentage of MMA from the paper I posted. The paper also has plots:



Here are the displacements of the Ribbed Stainless and FRP panels at buckling:

Ribbed:


FRP:


The fiberglass panel deflects about twice as much as the stainless panel: .02" versus .01". I contend we don't get into buckling but I could be wrong. What are your thoughts? You know this stuff better than I do.


As an FYI:
Here's a close up picture of my fiberglass panel. You can see there's an extruded track that's bonded into the panel to hold the adhesive. This channel ensures a minimum depth of adhesive. IOWs, you can't squeeze out the adhesive by applying too much pressure.



Here's a pic of the side panel on Spongebob. This is the panel above the bay doors that corresponds to the stainless panels on the XLII: