Crane Arm Model using beam theory

  • #1
Trying2Learn
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TL;DR Summary
Can a Bernoulli or Timoshenko model be reasonable for a crane arm, on ships?
Can a Bernoulli or Timoshenko model be reasonable for a crane arm, on ships?

Yes, the arm might have a truss element, yes there is a hydraulic force to lift the arm (or cables).

But to some extent, can one model the crane arm as one of a simple beam (either Timoshenko or Bernoulli -- and, which one of those, if them)?

And, yes, there are dynamic effects of moving loads, etc. But for a simple model, would either of those two theories work?
 

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Answers and Replies

  • #2
Baluncore
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Can a Bernoulli or Timoshenko model be reasonable for a crane arm, on ships?
Yes, but only as a first approximation.
In the second approximation, the points of attachment become critical to the design.

Marine applications will be engineered based on a long experience of previous successes, with only a few minor failures. Good design requires the hydraulics and control system be designed to protect the crane from exceeding design limits while operating or stowed.
 

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