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• # Calculating the rib thickness

Discussion in 'The main mechanical design forum' started by hbp, Aug 5, 2013.

1. ### joninstjohnMember

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Aug 2012
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This question cannot be answered without some acceptance criteria. However stiff you make it there will always be an element of 'bend'.

Acceptance criteria are usually provided by a relevant design code based either on deflection and or stress limits. The footprint of the mass is also an issue, is it uni or bi directional bending? Does selfweight need to be considered? What shape ribs? Bulb? Flats? Angles?

2.
3. ### hbpMember

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Aug 2013
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This problem having 2 phase
1) Phase to calculate the plate thickness which can avoid the bending, ie minimum thickness of plate

2) Ones we have minimum plate thickness, then reduce the plate thickness and use the rib for stiffness,
Rib in rectangular or square cross section, which welded diagonally or horizontally depends

plate material normal steel,
to make problem little simple,
if the plate is mounting on pillar, pillars are40x40x100 thickness at four corner(normal steel material) and plate welding with pillars, and same mass acting on center.
in this case calculating 1) and 2)
If you know how to do and if you are missing something , you can assume somethings which required for calculation,

Joined:
May 2013
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