Type of Document	Dissertation
Author	Fronk, Thomas Harris
URN	etd-07282008-134729
Title	Fully-coupled fluid-structure analysis of a baffled rectangular orthotropic plate using the boundary element and finite element methods
Degree	PhD
Department	Mechanical Engineering
Advisory Committee	Advisor Name Title Mahan, James Robert Committee Chair Fuller, Christopher R. Committee Member Holzer, Siegfried M. Committee Member Knight, Charles Eugene Committee Member Rogers, Craig A. Committee Member
Keywords	Boundary element methods
Date of Defense	1991-06-26
Availability	restricted
Abstract Laminated composite plates have become an important and proven structural material in aerospace and ocean vehicles. However, because of the inherent orthotropy of laminated composite materials the analysis of these structures is complex and usually cannot be adequately performed using classical methods. In this dissertation the formulation of the fully coupled fluid-structure interaction of a laminated composite plate and its surrounding fluid medium is presented. The solution technique involves the finite element method for modeling the structural response and the boundary element method for modeling the acoustic field. The model incorporates the Mindlin plate theory which includes five degrees of freedom. An improved integration technique is demonstrated which significantly reduces the approximation error. Storage requirements are reduced by grouping complex numbers. Finally the fully coupled fluid-structure interaction involving laminated composite plates is modeled using the combined FEM-BEM approach demonstrating the usefulness and the significance of the method.
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