等価線形化法による簡易弾塑性解析の配管系耐震試験への適用(機械力学,計測,自動制御)

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This paper compares the results of simplified inelastic analysis procedures to a shake table test of a large-scale piping system which was conducted by Nuclear Power Engineering Corporation. The simplified analysis procedures are based upon different equivalent linearization, and have been developed for calculating the inelastic seismic response of piping systems. Linearization of inelastic load-deformation relationship makes it possible to utilize conventional elastic seismic analysis, such as modeling using elastic beam elements and modal analysis. To linearize the stiffness equivalently, the flexibility factors of the elastic beam elements used in conventional modeling techniques will be modified. As a result, conventional modeling techniques can be easily applied to the simplified analysis procedures. Results of the simplified analysis procedure using equivalent linearization based upon the assumption of white noise excitation agree fairly well with those measured in the shake table test. However, the implified procedures using equivalent linearization based upon the assumption of harmonic response do not lead to good response predictions.
一般社団法人日本機械学会の論文
2005-02-25