Parameter Sensitivity Analysis of Vibration Reduction of Double Layer Spherical Shell with Viscous Damper

In this paper, by considering different setting pattern, position, number, damping factor and damping index, the primary parameters analysis of vibration reduction of double layer spherical shell with viscous damper is carried out with the finite element software SAP2000. It is concluded that replacing pattern is superior to appending pattern, further the replacing pattern that simultaneously replacing the outer ring rods of the up and down chords and the central vertical rod is superior to other pattern, and the number and damping factor have optimal value. The influence of damping index is obvious. The analysis conclusions in the paper are instructional for practical engineering.