A composite material foundation structure was presented, the panel was designed as sandwich structure. The structure and material parameters of the panel effect on the foundation vibration were predicted through the system impedance analysis theoretically. The static/dynamic characteristics of the sandwich panel were researched. Using vibration level difference as evaluation index, the panel structure parameters effect on the foundation damping performance were studied by experiments. The results show that: at frequencies , the sandwich panel stiffness can effectively control the foundation damping performance, as the frequency increases, the panel stiffness loss mechanism is reduced, the high-frequency loss of damping is enhanced; Relative to thickness of surfaces, high-frequency damping properties of the foundation will be well by increasing the thickness the panel core material; The damping capacity of the whole foundation contributed by faceplate is higher than the damping material in the canister wall.
MEI Zhi-yuan;YANG Kun; QIU Jia-bo.
damping mechanisms of sandwich panel for the cylindrical foundation[J]. Journal of Vibration and Shock, 2012, 31(9): 149-153
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