Abstract
This paper proposes a new method of simultaneous optimum design of dynamic absorbers for controlling multi-degree-of-freedom systems when each mode interacts dynamically. This method is based on the sensitivity analysis which examines the affect of variation in natural frequencies of other modes after mounting a dynamic absorber on the controlled mode. Resonance peaks of all modes are adequately controlled by mounting the corresponding dynamic absorbers, which were designed through iterative calculation using this method. The effectiveness of this method is demonstrated theoretically and experimentally, using a seven-degrees-of-freedom system, a Γ-shaped structure and a rectangular plate.
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