The Experts below are selected from a list of 6675 Experts worldwide ranked by ideXlab platform
Siak Piang Lim - One of the best experts on this subject based on the ideXlab platform.
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Vibration of cracked rectangular plates including transverse shear deformation and Rotary Inertia
Computers & Structures, 1993Co-Authors: Heow Pueh Lee, Siak Piang LimAbstract:Abstract A numerical method based on the Rayleigh method for predicting the natural frequencies of a rectangular plate with a centrally located crack is presented. The effects of transverse shear deformation and Rotary Inertia are included by applying the dynamic equivalent of the simplified Reissner theory. Numerical results are presented for isotropic and orthotropic rectangular plates. The common notion that the effect of Rotary Inertia is negligible with respect to the effect of transverse shear deformation is found to be valid only for cracked orthotropic plates. In respect of cracked isotropic plates, the inclusion of Rotary Inertia reduces the fundamental frequency of a thick isotropic plate with a long crack by an additional amount comparable to the amount caused by the shear deformation alone.
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Effect of transverse shear deformation and Rotary Inertia on the natural frequencies of rectangular plates with cutouts
International Journal of Solids and Structures, 1992Co-Authors: Heow Pueh Lee, Siak Piang Lim, S.t. ChowAbstract:Abstract A numerical method based on the Rayleigh principle is applied in conjunction with the simplified Reissner-Mindlin theory which involves only a single variable, the transverse displacement, for predicting the fundamental frequencies of rectangular plates with rectangular cutouts. The predicted results are compared with the finite elements results and the reported works available in the literature. It is concluded that the effect of Rotary Inertia can only be neglected for orthotropic plates with high degrees of orthotropy. For isotropic plates, the effect of Rotary Inertia becomes more pronounced with respect to the effect of transverse shear deformation with increased cutout size.
Heow Pueh Lee - One of the best experts on this subject based on the ideXlab platform.
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Vibration of cracked rectangular plates including transverse shear deformation and Rotary Inertia
Computers & Structures, 1993Co-Authors: Heow Pueh Lee, Siak Piang LimAbstract:Abstract A numerical method based on the Rayleigh method for predicting the natural frequencies of a rectangular plate with a centrally located crack is presented. The effects of transverse shear deformation and Rotary Inertia are included by applying the dynamic equivalent of the simplified Reissner theory. Numerical results are presented for isotropic and orthotropic rectangular plates. The common notion that the effect of Rotary Inertia is negligible with respect to the effect of transverse shear deformation is found to be valid only for cracked orthotropic plates. In respect of cracked isotropic plates, the inclusion of Rotary Inertia reduces the fundamental frequency of a thick isotropic plate with a long crack by an additional amount comparable to the amount caused by the shear deformation alone.
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Effect of transverse shear deformation and Rotary Inertia on the natural frequencies of rectangular plates with cutouts
International Journal of Solids and Structures, 1992Co-Authors: Heow Pueh Lee, Siak Piang Lim, S.t. ChowAbstract:Abstract A numerical method based on the Rayleigh principle is applied in conjunction with the simplified Reissner-Mindlin theory which involves only a single variable, the transverse displacement, for predicting the fundamental frequencies of rectangular plates with rectangular cutouts. The predicted results are compared with the finite elements results and the reported works available in the literature. It is concluded that the effect of Rotary Inertia can only be neglected for orthotropic plates with high degrees of orthotropy. For isotropic plates, the effect of Rotary Inertia becomes more pronounced with respect to the effect of transverse shear deformation with increased cutout size.
S.t. Chow - One of the best experts on this subject based on the ideXlab platform.
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Effect of transverse shear deformation and Rotary Inertia on the natural frequencies of rectangular plates with cutouts
International Journal of Solids and Structures, 1992Co-Authors: Heow Pueh Lee, Siak Piang Lim, S.t. ChowAbstract:Abstract A numerical method based on the Rayleigh principle is applied in conjunction with the simplified Reissner-Mindlin theory which involves only a single variable, the transverse displacement, for predicting the fundamental frequencies of rectangular plates with rectangular cutouts. The predicted results are compared with the finite elements results and the reported works available in the literature. It is concluded that the effect of Rotary Inertia can only be neglected for orthotropic plates with high degrees of orthotropy. For isotropic plates, the effect of Rotary Inertia becomes more pronounced with respect to the effect of transverse shear deformation with increased cutout size.
Vebil Yıldırım - One of the best experts on this subject based on the ideXlab platform.
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Common effects of the Rotary Inertia and shear deformation on the out-of-plane natural frequencies of composite circular bars
Composites Part B: Engineering, 2001Co-Authors: Vebil YıldırımAbstract:Abstract A numerical study is performed to investigate the common effects of the Rotary Inertia and shear deformation on the first six out-of-plane free vibration frequencies of symmetric cross-ply laminated circular bars with the help of the transfer matrix method. The distributed parameter model is employed in the free vibration analysis of the vibrating system. The overall transfer matrix is computed up to any desired accuracy using the effective numerical algorithm available in the literature. The first order shear deformation theory called as Timoshenko model is included in the analysis. For the opening angle α =90°, the effects of the Rotary Inertia and shear deformation are examined and presented in graphical forms considering boundary conditions (clamped–free, clamped–simple and clamped–clamped), and the slenderness ratios ( R / h =radius of the arch/thickness of the rectangular section=5–25). The effects of the ratio of the extensional modulus to the transverse modulus on the natural frequencies are also examined.
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Investigation of the Rotary Inertia and shear deformation effects on the out-of-plane bending and torsional natural frequencies of laminated beams
Composite Structures, 2000Co-Authors: Vebil Yıldırım, Erhan KiralAbstract:Abstract The out-of-plane free vibration problem of symmetric cross-ply laminated beams is studied by the transfer matrix method. The distributed parameter model is used for predicting the natural frequencies. The Rotary Inertia and shear deformation effects are considered in the Timoshenko beam analysis based on the first-order shear deformation theory. For the Bernoulli–Euler beam analysis, these effects are neglected to study the effects of shear deformation and Rotary Inertia on the first six natural frequencies. The numerical algorithm available in the literature is used to compute the exact overall dynamic transfer matrix. The effects of the Rotary Inertia and shear deformation are investigated for length/thickness ratios from 3 to 20, fixed–fixed, fixed–simple and fixed–free boundary conditions, and two values of the thickness/width ratios of rectangular section (2, 0.5). The results obtained by the Bernoulli–Euler and Timoshenko beam theories and relative errors between the two theories are presented in graphical form.
K M Liew - One of the best experts on this subject based on the ideXlab platform.
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analysis of wave propagation in piezoelectric coupled cylinder affected by transverse shear and Rotary Inertia
International Journal of Solids and Structures, 2003Co-Authors: Q Wang, K M LiewAbstract:In this paper, we examine the wave propagation in a piezoelectric coupled cylindrical shell affected by the shear effect and Rotary Inertia. A complete mathematical analysis of wave propagation solution in this piezoelectric coupled cylindrical shell is provided. The dispersion characteristics are derived through the solving an eigenvalue problem. Results are validated by the classical solution of a metallic cylinder. Besides providing and discussing the dispersion curves for different wave modes, we also examine the piezoelectric effects on the dispersion curves. Further to the above investigation, comparison of dispersion solutions from different shell theories is also conducted. This work may serve as a benchmark for wave propagation in piezoelectric coupled cylindrical shells.
