Sensitivity analysis and its application for

Abstract. In order to determine appropriate points where natural frequency or mode shape under consideration can be effectively modified by structural modification, the theoretical background of sensitivity analysis is described, followed by experimental verification with a simple structure. Then it can be extended to (1) operational deflection shape, where a problem arises at off-resonance frequency, (2) relative motion, (3) transmitted force through connect-ing points between components, (4) servo system, which consists of electrical elements with mechanical elements, and (5) acoustics generated by the vibra-tion of the structure. To illusrate its effectiveness, many actual examples are given