"I Beam" design

Discussion in 'Boat Design' started by Spiv, May 30, 2008.

  1. Alik
    Joined: Jul 2003
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    Alik Senior Member

    I would use just SS strut and wire or SS tape under mast. Beam is not efficient there as it has long span and limited SM (it can't expose under bridgedeck).
    Torsion will be taken by bridgedeck and cabin.
     
  2. Perm Stress
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    Perm Stress Senior Member

    I beam is generally suitable for materials with high shear strength and shear stiffness. It generally mean metal. I did not hear much about I beams made of composites...
     
  3. Alik
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    Alik Senior Member

    Yes, there are some T-bars in composites, not I-beams. For composites, better use square pipe or top hat sections that makes it easy to produce leaving no open edges.
     
  4. Perm Stress
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    Perm Stress Senior Member

    My guess if beam is used, it would be embedded in bridgedeck structure; than bridgedeck would take care for stability/buckling) of beam, among its other functions.

    If structure in its entirety is made from materials/members with significantly different stiffness/strength (glass/carbon for example) properties, FEA would be in order, to eliminate uncertainties on interaction.
     
  5. Alik
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    Alik Senior Member

    It is exactly what we have done, but we used top hat section between bridgdeck plating and cockpit deck. Still flexible.
     
  6. brian eiland
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    brian eiland Senior Member

    Attached Files:


  7. Alik
    Joined: Jul 2003
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    Alik Senior Member

    Thanks, interesting reading.
     
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