A Study on Flexural-Torsion Coupling Vibration of Fiber Composite Beams.

Fukuda, Takeo; Naito, Kazunari; Miki, Mitsunori; Sugiyama, Yoshihiko

doi:10.6089/jscm.18.121

Cited by 1 publication

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“…where I a is the moment of inertia of the arm and I a = m a L 2 a /12. The load P and the torque T are described by the following equations by the analysis of deformation of a composite cantilevered beam [6].…”

Section: State Equation Of Vibration Systemmentioning

confidence: 99%

“…where k ij are coefficients calculated from the stiffness matrix and geometrical parameters of a fiber composite beam based on laminated plate theory. By using equations ( 1), ( 4) and (5), equations ( 2) and (3) can be expressed by the following equations [6].…”

Section: State Equation Of Vibration Systemmentioning

confidence: 99%

“…Among them, however, simple structures such as beams and plates are treated as isotropic. One of the authors showed in [6] that the PAE can be tailored so as to meet design requirements by changing stacking sequences of fiber orientations of fiber composite beams. In the present study, such an anisotropic property of fiber composite materials is actively utilized in the flexuraltorsion vibration control problem.…”

Section: Introductionmentioning

confidence: 99%

“…Flexural-torsion vibration control is investigated for a fiber composite cantilevered beam having an eccentric mass attached referring to the result of study in [6]. The direction of the PAE is found based on the definition of the PAE in the static tests, and natural frequencies of flexural and torsional modes are obtained by spectrum analysis in the vibration tests.…”

Section: Introductionmentioning

confidence: 99%

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Flexural - torsion coupling vibration control of fiber composite cantilevered beam by using piezoceramic actuators

Takawa

Fukuda

Takada

1997

Smart Mater. Struct.

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In the experiment two piezoceramic actuators are prepared. One is adhered to the beam along the structural axis for controlling the flexural vibration mode of the beam, where it is called ACT1. Another is attached perpendicular to the principal axis of elasticity (PAE) of the beam for controlling the torsional vibration mode of the beam; where it is called ACT2. In the static test a cantilevered composite beam having an eccentric mass at the free end is prepared and the direction of the PAE is found based on the definition of the PAE, and natural frequencies of flexural and torsional vibration are obtained by the experiment. The vibrational behavior of the beam is examined by forced vibration tests under sinusoidal excitation having a natural frequency of the first flexural or torsional mode when ACT1 and/or ACT2 are operated. Equations of motion with two degrees of freedom are derived using laminated plate theory and the equilibrium of forces and moments. The experimental result is substantiated by simulation using the equations of motion and control theory.

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Section: State Equation Of Vibration Systemmentioning

confidence: 99%

Section: State Equation Of Vibration Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations