Vibration test system and method for structures

A vibration test system for structures comprises a vibration exciter that vibrates a real model portion, a load meter that measures a load, and a computer that receives a numerical model representing a numerical model portion. The computer includes a block that calculates a displacement, which is ma...

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Bibliographic Details
Main Authors HAGIWARA YUTAKA, OHTOMO KEIZO, FUKUYAMA MAYUMI, SAKAI MICHIYA, DOZONO YOSHIHIRO, HORIUCHI TOSHIHIKO, UMEKITA KAZUHIRO, KONNO TAKAO
Format Patent
LanguageEnglish
Published 21.07.2005
Edition7
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Summary:A vibration test system for structures comprises a vibration exciter that vibrates a real model portion, a load meter that measures a load, and a computer that receives a numerical model representing a numerical model portion. The computer includes a block that calculates a displacement, which is made in a predetermined time after completion of measurement, according to a load value and an external force value. A signal production block produces a command signal using as a target value the displacement calculated by the displacement calculation block. A step control block controls the displacement calculation block and signal production block so that they will act cyclically. The displacement calculation block uses an alphaOS method to time integrate a solution of a vibrational equation.
Bibliography:Application Number: US20040022675