Structural Modal Content Control using Dynamic Stiffness: Experimental Work,'

Publication Date


Document Type

Conference Proceeding


Yingjie Lin, David C. Nemir, Roberto A. Osegueda, "Structural modal content control using dynamic stiffness: experimental work", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208259; https://doi.org/10.1117/12.208259


This paper describes experimental work on the semi-active control of structural modal energy by dynamically controlling structural stiffness. Stiffness adjustment of the structure is achieved by engaging or disengaging `relaxed' control elements, thus changing local stiffness and changing the global eigenstructure without the introduction of energy into the system. Experiments on a three story laboratory model are described. Control experiments when the model is subjected to sinusoidal and random excitations demonstrate feasibility.