Nonlinear Free and Forced Vibrations of Symmetric Laminated Panels

2011 ◽  
Vol 471-472 ◽  
pp. 616-621 ◽  
Author(s):  
Alireza Shooshtari ◽  
Soheil Razavi ◽  
Hadi Ghashochi Bargh ◽  
Mohammad Homayoun Sadr-Lahidjani
Keyword(s):  
Perturbation Method ◽  
External Force ◽  
Laminated Composite ◽  
Composite Plates ◽  
Forced Vibrations ◽  
Numerical Results ◽  
Transverse Displacement ◽  
Laminated Composite Plates ◽  
Free And Forced Vibrations ◽  
Laminated Panels

In this paper, free and forced vibrations of symmetric laminated composite plates are studied analytically by using a perturbation method where the analytical results for transverse displacement are compared with the numerical results. The external force is taken to be harmonic in time and having uniform amplitude.

Analysis of Laminated Composite Plates by Local Inverse Multiquadrics Collocation Method

2014 ◽  
Vol 607 ◽  
pp. 731-734
Author(s):  
Song Xiang
Keyword(s):  
Collocation Method ◽  
Present Method ◽  
Shear Deformation Theory ◽  
Laminated Composite ◽  
Composite Plates ◽  
Shear Stresses ◽  
Transverse Displacement ◽  
Laminated Composite Plates ◽  
Sinusoidal Load ◽  
Support Domain

In present paper, deflection and stress of laminated composite plates are analyzed by a meshless local collocation method based on inverse multiquadrics radial basis function. This method approximates the governing equations based on first-order shear deformation theory using the nodes in the support domain of any data center. Transverse displacement, normal stresses, and shear stresses of the simply supported laminated composite plates under sinusoidal load are computed by the present method. The convergence characteristics are studied by several numerical examples. The present results are compared with available published results which demonstrate the accuracy and efficiency of present method.

Wave Propagation in Laminated Composite Plates Using Higher Order Theory

2000 ◽  
Vol 68 (3) ◽  
pp. 503-505 ◽  
Author(s):  
M. R. Chitnis ◽  
Y. M. Desai ◽  
T. Kant
Keyword(s):  
Wave Propagation ◽  
Laminated Composite ◽  
Composite Plates ◽  
Transversely Isotropic ◽  
Order Theory ◽  
Higher Order ◽  
Numerical Results ◽  
Laminated Composite Plates ◽  
Layered Plates ◽  
Displacement Based

A higher order displacement based formulation has been developed to investigate wave propagation in fiber-reinforced polymer composite laminated (FRPCL) plates. The formulation has been applied, as an illustration, to a plate made up of transversely isotropic laminae with the axes of symmetry lying in the plane of the lamina. Results for the plane as well as the antiplane strain cases are shown to be in excellent agreement with the exact solutions for isotropic and transversely isotropic single layered plates. Also, numerical results have been obtained for crossply (0 deg/90 deg/0 deg/90 deg) laminated composite plates, which agree very well with the previously published numerical results. The formulation can be employed to expeditiously investigate the dispersion characteristics of waves propagating in a plate with an arbitrary number of anisotropic laminae.

scholarly journals Displacement and stress analysis of laminated composite plates using an eight-node quasi-conforming solid-shell element

2017 ◽  
Vol 4 (1) ◽  
pp. 8-20 ◽  
Author(s):  
Yu Wang ◽  
Guangyu Shi ◽  
Xiaodan Wang
Keyword(s):  
Laminated Composite ◽  
Composite Plates ◽  
Shell Element ◽  
Laminated Plates ◽  
Numerical Results ◽  
Normal Strain ◽  
Solid Shell ◽  
Laminated Composite Plates ◽  
Interlaminar Stresses ◽  
Modeling And Analysis

Abstract This paper presents the efficient modeling and analysis of laminated composite plates using an eightnode quasi-conforming solid-shell element, named as QCSS8. The present element QCSS8 is not only lockingfree, but highly computational efficiency as it possesses the explicit element stiffness matrix. All the six components of stresses can be evaluated directly by QCSS8 in terms of the 3-D constitutive equations and the appropriately assumed element strain field. Several typical numerical examples of laminated plates are solved to validate QCSS8, and the resulting values are compared with analytical solutions and the numerical results of solid/solidshell elements of commercial codes computed by the present authors in which fine meshes were used. The numerical results show that QCSS8 can give accurate displacements and stresses of laminated composite plates even with coarse meshes. Furthermore, QCSS8 yields also accurate transverse normal strain which is very important for the evaluation of interlaminar stresses in laminated plates. Since each lamina of laminated composite plates can be modeled naturally by one or a few layers of solidshell elements and a large aspect ratio of element edge to thickness is allowed in solid-shell elements, the present solid-shell element QCSS8 is extremely appropriate for the modeling of laminated composite plates.

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