振動のモーダルアナリシスシステムの開発

概要

論文の詳細を見る
The objectives of the modal analysis are to analyze vibrational characteristics of tested structure and to obtain effective technical informations is order to improve vibrational performances of that structure. In this research, a modal analysis system, which consists of an FFT (Fast Fourier Transform) analyzer, a personal computer, x-y plotter and some computer programs, is newly constructed and demonstrated. The newly constructed system has following five characteristic functions. (1) Defining the shape of the tested structure and saving the shape data by using the personal computer. (2) Controlling the FFT analyzer by the personal computer and exchanging modal data through GP-IB between the FFT analyzer and the personal computer. (3) Estimating the modal parameters (that is, modal mass, modal stiffness and modal damping factor) by using the curve fitting. (4) Demonstrating modal animations at each natural frequency on the personal computer's display. (5) The newly constructed system is effectively available to give the knowledge of modal analysis experimentally to high grade students.
沼津工業高等専門学校の論文
1992-01-30