NATURAL FREQUENCY IDENTIFICATION METHOD, STRUCTURE BASE-ISOLATING METHOD, AND STRUCTURE VIBRATION-CONTROL METHOD

PROBLEM TO BE SOLVED: To provide a natural frequency identification method in which a natural frequency in a specific vibration mode as a specific vibration mode of a structure is identified through simple procedures. SOLUTION: This natural frequency identification method superseding a conventional...

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Hauptverfasser:	KAWASHIMA MANABU, KIDA HIDENORI, NAKAMINAMI SHIGEKI, TANAKA HISAYA, NAMITA TAMOTSU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BUILDING BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES ENGINEERING ELEMENTS AND UNITS FENCING FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MASTS MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING SHOCK-ABSORBERS SPRINGS SWIMMING OR SPLASH BATHS OR POOLS TENTS OR CANOPIES, IN GENERAL THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a natural frequency identification method in which a natural frequency in a specific vibration mode as a specific vibration mode of a structure is identified through simple procedures. SOLUTION: This natural frequency identification method superseding a conventional natural frequency identification method includes: a step of connecting a mass damper with a spring along the direction of relatively displacing a screw feeding direction, between two points relatively displaced in the specific vibration mode in the specific location of the structure; a step of acquiring vibration data of the mass damper with the spring in accordance with a damper natural frequency ωr of the mass damper with the spring, while changing the damper natural frequency ωr; and a step of determining the natural frequency ωn in the specific vibration mode of the building through the use of the vibration data. COPYRIGHT: (C)2010,JPO&INPIT