A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To propose a vibration characteristic analysis method to improve the prediction accuracy of vibration characteristics at arbitrary points in an architectural structure.SOLUTION: The present invention measures the frequency response function at a measurement point of an architectural structure (step S1), identifies from the measured frequency response function the damped natural angular frequency, the mode attenuation rate, and the characteristic mode of the vibration in the excitation direction at the excitation point and the response point (step S2), approximates the characteristic mode at an arbitrary point of the architectural structure with a series of a predetermined sequence of functions (step S3), calculates the coefficients of the series by the weighted least squares method (step S6), and predicts the frequency response function at an arbitrary point of the architectural structure (step S8).SELECTED DRAWING: Figure 4
【課題】建築物の任意の点における振動特性の予測精度を向上させる振動特性解析方法を提案する。【解決手段】本発明は、建築物の測定点における周波数応答関数を測定し（ステップＳ１）、前記測定された周波数応答関数から減衰固有角振動数と、モード減衰率と、加振点及び応答点における加振方向の振動の固有モードを同定し（ステップＳ２）、前記建築物の任意の点における固有モードを、所定の関数列の級数で近似し（ステップＳ３）、重み付き最小二乗法により前記級数の係数を計算し（ステップＳ６）、前記建築物の任意の点における周波数応答関数を予測する（ステップＳ８）。【選択図】図４
To propose a vibration characteristic analysis method to improve the prediction accuracy of vibration characteristics at arbitrary points in an architectural structure.SOLUTION: The present invention measures the frequency response function at a measurement point of an architectural structure (step S1), identifies from the measured frequency response function the damped natural angular frequency, the mode attenuation rate, and the characteristic mode of the vibration in the excitation direction at the excitation point and the response point (step S2), approximates the characteristic mode at an arbitrary point of the architectural structure with a series of a predetermined sequence of functions (step S3), calculates the coefficients of the series by the weighted least squares method (step S6), and predicts the frequency response function at an arbitrary point of the architectural structure (step S8).SELECTED DRAWING: Figure 4
【課題】建築物の任意の点における振動特性の予測精度を向上させる振動特性解析方法を提案する。【解決手段】本発明は、建築物の測定点における周波数応答関数を測定し（ステップＳ１）、前記測定された周波数応答関数から減衰固有角振動数と、モード減衰率と、加振点及び応答点における加振方向の振動の固有モードを同定し（ステップＳ２）、前記建築物の任意の点における固有モードを、所定の関数列の級数で近似し（ステップＳ３）、重み付き最小二乗法により前記級数の係数を計算し（ステップＳ６）、前記建築物の任意の点における周波数応答関数を予測する（ステップＳ８）。【選択図】図４
VIBRATION CHARACTERISTIC ANALYSIS METHOD
振動特性解析方法
ARAKI YOZO (author)
2023-09-29
Patent
Electronic Resource
Japanese
IPC:
G01M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
,
Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
G01H
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
,
Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen
/
G06F
ELECTRIC DIGITAL DATA PROCESSING
,
Elektrische digitale Datenverarbeitung
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