Aluminium Deflection

Discussion in 'Boat Design' started by Adarsh Edakkote, Nov 8, 2016.


  1. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    In addition to D's nice summary above, simple answer Yes.

    As one goes through the rules each alloy has a given unwelded and as-welded strength The as-welded is also dependent upon the grade of alloy and the temper. Further, the Class pressure design loads are also categorised into different locations (and end fixity) just as are the "fudge factors" for different members, be they deckhouse sides or bottom slamming regions or WTBs etc.

    A good summary of such is also given in Altered Properties in Feb/March 2015 Professional Boatbuilder Magazine, where it discussed the alloys and the effects of welding too.

    NB>

    But also, as D pointed out. One cannot mix and match different values from different Class societies. Start with Class A and stick with it. One cannot use Class A values of design stress when using a design pressure calculated using Class B.
     
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