Experimentally validated model of a membrane strip with multiple actuators

Renno, Jamil and Inman, Daniel (2007) Experimentally validated model of a membrane strip with multiple actuators. Journal of Spacecraft and Rockets, 44 (5), 1140-1152. (doi:10.2514/1.27843).

Abstract

This paper presents the modeling and experimental validation of a membrane strip actuated in bending and tension. This investigation is a prelude to the modeling of a circular membrane augmented with smart actuators around its outer rim. Two macrofiber composite bimorph actuators are attached near the ends of the membrane strip.Wetreat two configurations. In the first configuration, both bimorph actuators are excited in bending to change the shape of the membrane strip. In the second configuration, one bimorph acts in bending and the other bimorph acts in tension. The membrane strip is modeled as a nonuniform, nonhomogenous, Euler–Bernoulli beam under tension. The finite element method is used to facilitate the handling of the nonuniformities of the combined structure. Experimental results are used to validate the model developed. The prediction of the finite element model and the experimental results are in agreement

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