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how to apply critical tolerance stack up analysis for large structures

how to apply critical tolerance stack up analysis for large structures

how to apply critical tolerance stack up analysis for large structures

(OP)
hi,

I woule like to apply tolerance stack up analysis for large subsea structure on which a various modules/assemblies mounted & all modules should be 100% interchangable.

Can any one suggest me which method & how tolerance stack up analysis can be applied to this type of structural work ?.

so i can get final result in terms of Spreded excel sheet with mathematical relations (final intention) in excel cells.

RE: how to apply critical tolerance stack up analysis for large structures

i have done modules in onshore not offshore. we dont have this tolerance stack up analysis. we just oversize those base plate holes per AISC.

RE: how to apply critical tolerance stack up analysis for large structures

Mech123456,

   Your diagram looks like a bunch of modules bolted to a platform.  It looks to me like your primary requirement is that mounting holes line up, and that your interface structures are flat enough to not warp anything.  I do not see a stack anywhere.

   You need to prepare drawings with tolerances.  The holes have to line up.  Each module must fit within its envelope.  This is a better question for forum1103: Drafting Standards, GD&T & Tolerance Analysis.  It's not really a structural question.

   If you re-post, please red flag this thread.   

               JHG

RE: how to apply critical tolerance stack up analysis for large structures

Assigning tolerances is a meaningless excercise if you don't know your process capabilities...

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