1002 分割モード試験における質量と剛性の最適付加位置(S88-1 宇宙構造・材料(1),S88 宇宙構造・材料) 1002 Optimal Location with Mass and Stiffness in Component Modal Tests
This paper deals with a method to determine dynamic characteristics of space structures by component modal tests. This method uses additional mass and stiffness to consider the effect of untested components. Modal test results depend on a location with additional mass and stiffness. We select optimal location using information about variations of two masses. These masses are found by reducing mass matrices of a tested component and a structure to an arbitrary degree of freedom. It is effective to select the location with large modal amplitude of structure modes for the accuracy of measured frequency and mode in component modal tests. A numerical example is given to show the effectiveness of the method.
年次大会講演論文集 2006.5(0), 297-298, 2006