S1903-1-1 大形構造物の分割試験における分割位置の影響(宇宙構造・材料)

概要

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This paper describes a method to predict the frequencies and modes of large structures by component modal tests. In this method, identical frequency measured by component modal tests for different tested components is considered frequency of structures. It is important to select a location where adds mass and stiffness to a tested component for accurate frequency measurements. In this method, peak frequencies of two masses give key information to select the optimal location. These masses are found by reducing mass matrices of a tested component and a structure to an arbitrary degree of freedom. The location is selected so that we separate peak frequencies of two masses from a target frequency of structures. Accurate mode measurements depend on which tested component is selected. This paper clarifies how to select a tested component to obtain accurate frequencies and modes of structures through component modal tests.
一般社団法人日本機械学会の論文
2009-09-12