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Active Saturation Control of Hysteretic Structures
Author(s) -
Asano Koichiro,
Nakagawa Hajime
Publication year - 1998
Publication title -
computer‐aided civil and infrastructure engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.773
H-Index - 82
eISSN - 1467-8667
pISSN - 1093-9687
DOI - 10.1111/0885-9507.00120
Subject(s) - saturation (graph theory) , bilinear interpolation , nonlinear system , structural engineering , vibration control , structural system , earthquake simulation , random vibration , engineering , earthquake engineering , excitation , control theory (sociology) , vibration , computer science , control (management) , mathematics , physics , electrical engineering , quantum mechanics , combinatorics , artificial intelligence , computer vision
This article presents an analytical approach to estimating the seismic random response of MDOF elastoplastic structural systems with bilinear hysteretic characteristics under saturation control force. Active saturation control is used for both seismic safety and vibration mitigation under severe earthquake excitation. Numerical calculations are carried out for five‐degree‐of‐freedom systems, and the efficiency of the theoretical saturation control approach is examined from two viewpoints of random seismic response and energy response. Considering the inability to install a saturation control system in actual structural systems, much more realistic nonlinear control systems are developed and examined from the control efficiency viewpoint through simulation analysis based on the earthquake accelerogram recorded during the Hyogo‐ken Nanbu earthquake.