The vibrations of generally orthotropic beams, a finite element approach

Teh, K.K.; Huang, C. C.

doi:10.1016/0022-460x(79)90021-x

Cited by 57 publications

(17 citation statements)

References 8 publications

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“…Chandrashekhara et al [1,2] studied symmetric angle ply laminates through analytical solutions. Teh and Huang [3] employed finite element approach to study an angle ply graphite/ epoxy cantilever beam.…”

Section: Introductionmentioning

confidence: 99%

On the angle ply higher order beam vibrations

Marur

Kant

2006

Comput Mech

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Vibrations of angle ply laminated beams are studied using the higher order theory and isoparametric 1d finite element formulations through proper constitution of elasticity matrix. Subsequent to the validation of the formulation, deep sandwich and composite beams are critically analyzed for various boundary conditions. Frequencies classified based on their spectrum are presented along with those of first order theories for comparison.

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Section: Introductionmentioning

confidence: 99%

On the angle ply higher order beam vibrations

Marur

Kant

2006

Comput Mech

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“…Jensen and Crawley (1984) have studied the dynamic performance of laminated FRP plate focused on bendingtorsion coupling load using moment curvature relations and expressed in the form of elastic compliance. Teh and Huang (1979) have presented a novel approach to find the compliance parameter of orthotropic beams using finite element methods. The compliance matrix derivations for unidirectional composite beams are given by Nikpur and Dimarogonas (1988).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Study of Composite Cracked Beam by Changing the Angle of Bidirectional Fibres

Jena¹,

Parhi

Pohit

2016

Iran. J. Sci. Technol. Trans. Sci.

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Composite beam type structures fail in the presence of cracks. While in use the crack depth gradually increases, the structural stiffness decreases and as a result the beam becomes weaker than its earlier conditions. At the end, the beam may collapse because of an initial or developed small crack. Hence, identification of the crack and its severity is a challenge for researchers. In the present work, vibration signatures were used to detect the crack position as well as crack depth in a cracked FRP composite beam. Seven types of epoxy-glass fibres bidirectional (woven) composite beams made of 13 layers oriented along 0°, 7.5°, 15°, 22.5°, 30°, 37.5°and 45°with clamp-free end condition were studied. Fibre orientation effects on the FRP composite beam with varying crack location and crack depth were evaluated using analytical, finite element methods and Sugeno-fuzzy approach. The results were obtained and verified by experiments. The outcomes of all the methods were in good agreement. It was concluded that the natural frequency and mode shape in free vibration were largely affected by orientation of fibre and crack location and its depth.

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“…The natural frequencies at which the dynamic stiffness matrix turned into singular were obtained. Teh and Huang (1979) investigated a general orthotropic cantilever beam by using two finiteelement models, containing both the shear deformation and the rotary inertia effects. In the analysis, the first-order shear deformation theory was utilized.…”

Section: Introductionmentioning

confidence: 99%