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Date of Publication:2022-10-10

Journal:计算力学学报

Affiliation of Author(s):运载工程与力学学部

Issue:5

Page Number:601-607

ISSN No.:1007-4708

Abstract:Curved shell structures have been widely used in aerospace,navigation and other fields,the tiny vibration of the structure will greatly affect the performance of components,it is necessary to control the vibration of curved shell structure.Optimal vibration control model of piezoelectric curved shell structure is presented,the base shell elements and the piezoelectric shell elements are coupled on the basis of the theory of spatial curved shell element and the multipoint constraint equations,and the dynamics finite element equation of piezoelectric curved shell structure is deduced.Optimal vibration control of piezoelec-tric curved shell structure is achieved by piezoelectric actuators according to the linear quadratic optimal control theory.Numerical examples are given to demonstrate that the required number of curved shell elements and actuators is much less than that of plat shell elements when they have the same precision and control effect at the same time in the dynamic analysis and vibration control of the curved shell struc-ture.

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