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Homework Help: Beam/Frame/Truss Deflection Methods (Theory)

  1. Jul 22, 2014 #1
    1. The problem statement, all variables and given/known data

    No specific problem.

    2. Relevant equations

    Internal Work = External Work
    δ = ∂U/∂P

    3. The attempt at a solution



    So I have a question about solving for deflections in various structural members, frames and trusses.

    So far, I find myself utilizing Virtual Work method to solve for displacements exclusively. I keep trying to discover situations where I would have to use the Euler-Bernoulli Beam Equation or Castigliano's method because Virtual Work is inapplicable but I have yet to do so.

    Is there a situation where Virtual Work can not be utilized to solve for displacements but the others can be? Or can I safely stick to my most comfortable method in every case?
  2. jcsd
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