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Homework Help: Thermal Stress Analysis in a barrel of a T-80 tank

  1. Jan 16, 2015 #1
    1. The problem statement, all variables and given/known data
    I need to find thermal stresses that will be produced in a tank barrel as a result of firing. First of all, I want to know if theses stresses can be small enough to be neglected? And if not, then how can they be calculated? I basically know the solution but I want to be sure. If I can improve my solution in any way or if there can be another way to solve it, I would be interested.
    I don't know the temperature after firing so I would be denoting it with T and initial temperature will be To.

    2. Relevant equations
    Thermal Stress= elastic modulus * coefficient of expansion * change in temperature
    3. The attempt at a solution
    Using the
    E=205 G Pa
    coefficient of expansion = 15.69 x 10-6 m/m.°C
    change in temperature = T-To
    stress= 205*109 * 15.69 x 10-6 * (T-To)
  2. jcsd
  3. Jan 16, 2015 #2
    The barrel is constrained only to the turret only. It is smooth bore, auto-frettaged and chrome-platted. It is made up of a single layer of material properties of which I have provided.
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