複数の付加質量と剛性を用いた大形構造物の分割試験

摘要

This paper describes a new test method to obtain the dynamic characteristics of large structures such as satellite antennas and solar paddles. It has become increasingly difficult to perform modal tests for large deployed antennas and solar paddles because they arc not strong enough to withstand the force due to gravity. Component modal tests arc effective to predict the dynamic characteristics of these structures. In this method, the effect of untested components is considered as additional mass and stiffness allached to a tested component and they are attached to an arbitrary degree of freedom on a tested component. Modal tests arc performed for different tested components, and we consider identical frequencies obtained by component modal tests as frequencies of structures. This paper demonstrates the effectiveness of component modal test with multiple additional masses and stiffnesses to apply real structures.