Bending Moments - which is which?

Discussion in 'Stability' started by Niru, Sep 4, 2015.

  1. Niru
    Joined: Jul 2010
    Posts: 50
    Likes: 1, Points: 0, Legacy Rep: 32
    Location: Philippines

    Niru Mr.

    Hi peps.

    Me again.

    Got some issues with having two different values of Bending Moments
    (just a rough estimate)

    here are the details.

    SM of vessel - 16 279.85 cm²-m <----- scantling calc.
    permissible stress - 1.26 tons/cm² <--- ABS container loading
    deck capacity, stress - 7 tons/m² <------ from drawing plan

    for no.1 calculation estimate.

    SM X permissible stress = permissible bending moment

    16 279.85 cm²-m X 1.26 tons/cm³ = 20,152.611 tonnes-m

    for no.2 calculation estimate.

    1.628 m³ X 7 tons/m² = 11.396 tonnes-m

    any thoughts? please do reply

    my bet is on the 1st calculation but will it prove that the other calculation is not acceptable? vice-versa.

    Many Thanks!

    NAGP
     
  2. Niru
    Joined: Jul 2010
    Posts: 50
    Likes: 1, Points: 0, Legacy Rep: 32
    Location: Philippines

    Niru Mr.

    okay ...

    i think the 7 tons/meter² is not a stress value. which is = force / area.

    its more likely of weight per area. meaning in a 100m² of its deck space it can carry 700 tonnes (100m² X 7 tons/m²).

    shoot! hehe :)
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.