Nonlinear Vibrations and Reduced Order Modeling of Bolted Joints

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2022-11-29

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Beyan, Hümeyra

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Due to ease of mounting, high strength feature and availability, bolted joints are one of the most common and widely used connection method. The contact between connected bodies is ensured by preload force on bolts which affect the stiffness and damping characteristics of the assembled system and introduce nonlinearity. To obtain the dynamic characteristic of systems with bolted joints accurately, the nonlinearity effect should be included. With high fidelity contact model’s accurate response can be obtained whereas the computational cost is drastically increased. The reduced-order modeling of bolted connections is essential to obtain the nonlinear dynamic response with adequate accuracy. The aim of the work represented in this thesis is to decrease the computational cost of the reduced contact model by utilizing modal superposition method with response-dependent nonlinear modes.

Subject Keywords

Reduced Order Joint Model, Modal Superposition Method, Response Dependent Mode Shapes, Nonlinear Vibrations

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https://hdl.handle.net/11511/101359

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

H. Beyan, “Nonlinear Vibrations and Reduced Order Modeling of Bolted Joints,” M.S. - Master of Science, Middle East Technical University, 2022.