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Homework Help: Thermal Expansion of wires within a structure - see picture!

  1. Sep 22, 2009 #1
    1. The problem statement, all variables and given/known data
    dB = 12mm (0.012m), dC = 20mm (0.02m),
    E = 140GPa and the coefficient of thermal expansion, α = 12e-6/°C.


    2. Relevant equations
    δ = (R*L)/(E*A)


    3. The attempt at a solution
    Please see picture for my attempt.

    I don't know how the thermal expansion, which creates a thermal strain, will affect the moment balance or compatibility relationship. I know that the factor of safety will mean I'd be dividing the ultimate load by 5. Would the ultimate load be twice the static load?

    Any help would be greatly appreciated!
     

    Attached Files:

  2. jcsd
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