摩擦系応答スペクトルを用いた配管系の等価減衰比推定法

概要

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This report deals with the seismic response behavior of piping systems in industrial facilities such as petro-chemical, oil refinery and nuclear power plants. Piping is generally put on the supporting structures. Therefore, frictional vibration occurs between piping and supporting system during seismic excitation. Special attention is focused on this nonlinear frictional dynamic responses of piping systems due to frictional vibration appearing among piping and supporting devices. Mock-up piping structure model is excited by large scale shaking table. FEM model is made from the mock-up piping of shaking test, and model parameters of linear system are calculated. Equivalent damping ratio is estimated from friction response spectra. The maximum responses calculated by linear analysis using equivalent damping ratio are compared with the maximum responses obtained by experiment.
一般社団法人日本機械学会の論文
2000-02-25