EAS4240/6939 Project – Phase IIThe cylindrical pressure vessel of the first phase is now to be designed for maximal vibration frequency.Individual panels on the vessel are 30 cm by 20 cm in size, and can be assumed to be flat and simplysupported for the vibration analysis. Unlike the first phase, the pressure vessel is made of a 16‐plysymmetric laminate, and our goal is to maximize the vibration frequency and the pressure it can take.1.Find the laminate that will maximize the first natural vibration frequency of the panel (that isnot including the effect of the loading), and the value of this frequency in Hertz. You need tosatisfy the constraints on D16and D26(see Eq. 8.1.2 and the following paragraph). Theseconstraints apply also to parts 2 and 3.2.Find the laminate that will maximize the vibration frequency of the panel when ply angles arelimited to 0o,45o,‐45o, and 90o. Calculate also the maximum pressure that it can carry without
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2m, 30 cm, 20 cm, vibration frequency, 0.125 mm, Hertz.