Nonlinear vibration and stability of rotating, pretwisted, preconed blades including Coriolis effects

Subrahmanyam, K.B.; Kaza, K. R. V.; Brown, Gerald V.; Lawrence, Charles

doi:10.2514/3.45451

Cited by 19 publications

(11 citation statements)

References 2 publications

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“…The e!ects of a concentrated mass as well as its arbitrary location, the pre-twist angle, and the orientation of the blade are incorporated into the model. In previous studies (see reference [5,6,9,13]), these e!ects have not been considered simultaneously, and the concentrated mass is located at the tip of the blade. To obtain the equations of motion, a modelling method using hybrid deformation variables is employed.…”

Section: Introductionmentioning

confidence: 99%

“…More complex shapes and e!ects of beams were considered, too. The e!ects of tip mass (see reference [5,6]), elastic foundation and cross-section variation (see reference [7]), shear deformation (see reference [8]), the pre-twist and the orientation of the blade (see reference [9]), and the gyroscopic damping e!ect (see reference [10]) on the modal characteristics of rotating beams were studied. Survey papers (see reference [11,12]) in which large number of related papers are reviewed are available, too.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vibration Analysis of Rotating Pre-Twisted Blades With a Concentrated Mass

Yoo¹,

Kwak

Chung

2001

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vibration Analysis of Rotating Pre-Twisted Blades With a Concentrated Mass

Yoo¹,

Kwak

Chung

2001

Journal of Sound and Vibration

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“…More complex shapes and the e!ects of beams were also considered. The e!ects of tip mass [5,6], elastic foundation and cross-sectional variation [7], shear deformation [8], pre-twist and orientation of a blade [9], and gyroscopic damping e!ect [10] on the modal characteristics of rotating cantilever beams were studied. Survey papers for the vibration analysis of rotating structures are available [11,12].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of a Rotating Cantilever Beam by Using the Finite Element Method

Chung

Yoo

2002

Journal of Sound and Vibration

184

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“…Murthy [18] has given a improved model of transverse shear deformation theory for laminated anisotropic plates. Kopania [21] has concluded the First Order Shear Deformation Laminate Theory and the result is found to be similar to that of higher order theories at a lower computational cost. To analyze the behavior of laminated beams, some authors use numerical techniques such as the Finite Element Method, the Galerkin Method or the Boundary Element Method [8,22,24], whereas others use analytical models [3,13,15,25,26].…”

Section: Literature Reviewmentioning

confidence: 57%

Effect of Fiber Orientation and Position of Circular Hole on Torsional Natural Frequency of Laminated Composite Beam

Padhi¹

2018

IJRASET

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The composite materials are well known by their excellent combination of high structural stiffness and low weight. The main feature of these anisotropic materials is their ability to be tailored for specific applications by optimizing design parameters such as stacking sequence, ply orientation and performance targets. Finding free torsional vibrations characteristics of laminated composite beams is one of the bases for designing and modeling of industrial products. With these requirements, this work considers the free torsional vibrations for laminated composite beams of doubly symmetrical cross sections. The torsional vibrations of the laminated beams are analyzed analytically based on the classical lamination theory, and accounts for the coupling of flexural and torsional modes due to fiber orientation of the laminated beams are neglected. Also, the torsional vibrations of the laminated beams analyzed by shear deformation theory in which the shear deformation effects are considered. Numerical analysis has been carried out using finite element method (FEM). The finite element software package ANSYS 13.0 is used to perform the numerical analyses using an eight-node layered shell element to describe the torsional vibration of the laminated beams. The rotary inertia and shear deformation effects of the element are taken. The influence of fiber directions and stacking sequences of laminates on torsional natural frequencies were investigated. Also, the effects of boundary conditions are demonstrated. Numerical results, obtained by the ANSYS 13.0, classical lamination theory, and shear deformation theory are presented to highlight the effects of fibers orientation and layers stacking sequence on torsional frequencies of the beams. The results obtained by ANSYS are compared against the classical lamination theory, as well as shear deformation theory.

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Nonlinear vibration and stability of rotating, pretwisted, preconed blades including Coriolis effects

Cited by 19 publications

References 2 publications

Vibration Analysis of Rotating Pre-Twisted Blades With a Concentrated Mass

Vibration Analysis of Rotating Pre-Twisted Blades With a Concentrated Mass

Dynamic Analysis of a Rotating Cantilever Beam by Using the Finite Element Method

Effect of Fiber Orientation and Position of Circular Hole on Torsional Natural Frequency of Laminated Composite Beam

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