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- W1584767148 abstract "Techniques for defining a finite element model (FEM) for analysis of nonlinear vibrations in beam structures subjected to harmonic excitation are presented. The resulting model covers longitudinal deformation and inertial effects. The nonlinear oscillations of a beam element under forced excitation are modeled by a harmonic force matrix based on first order approximations of the Jacobian elliptic forcing function. Harmonic force and nonlinear stiffness matrices are derived and the nonlinear forced responses of beams are calculated under various boundary conditions. The results of FEM computations for simply-supported and clamped beams show that midplane stretching caused by large deflections increases the nonlinearity. Axially-restrained beams experience only hardening nonlinearity, while axially-free beams have reduced nonlinearity in deformation and inertia and an increase in linearity due to large deflection." @default.
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- W1584767148 date "1984-01-01" @default.
- W1584767148 modified "2023-09-23" @default.
- W1584767148 title "A Finite Element Method for Nonlinear Forced Vibrations of Beams" @default.
- W1584767148 hasPublicationYear "1984" @default.
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