Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
A dynamic theory for laminated composites consisting of anisotropic layers
Download
index.pdf
Date
2006
Author
Yalçın, Ömer Fatih
Metadata
Show full item record
Item Usage Stats
169
views
47
downloads
Cite This
In this thesis, first a higher order dynamic theory for anisotropic thermoelastic plates is developed. Then, based on this plate theory, two dynamic models, discrete and continuum models (DM and CM), are proposed for layered composites consisting of anisotropic thermoelastic layers. Of the two models, CM is more important, which is established in the study of periodic layered composites using smoothing operations. CM has the properties: it contains inherently the interface and Floquet conditions and facilitates the analysis of the composite, in particular, when the number of laminae in the composite is large; it contains all kinds of deformation modes of the layered composite; its validity range for frequencies and wave numbers may be enlarged by increasing, respectively, the orders of the theory and interface conditions. CM is assessed by comparing its prediction with the exact for the spectra of harmonic waves propagating in various directions of a two-phase periodic layered composite, as well as, for transient dynamic response of a composite slab induced by waves propagating perpendicular to layering. A good comparison is observed in the results and it is found that the model predicts very well the periodic structure of spectra with passing and stopping bands for harmonic waves propagating perpendicular to layering. In view of the results, the physical significance of Floquet wave number is also discussed in the study.
Subject Keywords
Engineering mechanics.
,
Mechanics, Applied.
URI
http://etd.lib.metu.edu.tr/upload/12607116/index.pdf
https://hdl.handle.net/11511/15846
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Free vibration analysis of anisotropic laminated composite shells of revolution
Yavuzbalkan, Erdem; Kayran, Altan; Department of Aerospace Engineering (2005)
In this thesis, the free vibration analysis of anisotropic laminated composite shells of revolution (ALCSOR) is studied. The governing equations are kinematic, constitutive, and motion equations. Geometrically linear strain-displacement equations of Reissner-Naghdi shell theory in combination with first-order shear deformation theory in which transverse shear and rotatory inertia effects are taken into consideration. The constitutive relations are for macrosopically ALCSOR in which statically equivalent for...
The shrink fit consisting of elastic hollow shaft and nonlinearly hardening elastic-plastic hub
Orcan, Y; GAMER, U (Springer Science and Business Media LLC, 1990-3)
Based on Tresca's yield criterion and the flow rule associated to it, general expressions for stresses and displacement in a shrink fit consisting of elastic hollow inclusion and elastic-plastic hub with arbitrary nonlinear isotropic hardening are derived. For two specific hardening laws—one of Ludwik type and the other of Swift type—there follows the explicit determination of stresses and displacement together with numerical results.
The use of dual reciprocity boundary element method in coupled thermoviscoelasticity
Baranoglu, Besim; Mengi, Yalcin (Elsevier BV, 2006-01-01)
A boundary element formulation is presented in a unified form for the analysis of thermoviscoelasticity problems. The formulation contains the thermoelastic material as a special case. The boundary-only nature of boundary element method is retained through the use of particular integral method; where the particular solutions are evaluated with the aid of dual reciprocity approximation. The proposed formulation can be used in both coupled and uncoupled thermoviscoelasticity analyses, and it permits performin...
A boundary element formulation for axi-symmetric problems in poro-elasticity
Özyazıcıoğlu, Mehmet H; Özkan, M. Yener; Department of Civil Engineering (2006)
A formulation is proposed for the boundary element analysis of poro-elastic media with axi-symmetric geometry. The boundary integral equation is reduced to a set of line integral equations in the generating plane for each of the Fourier coefficients, through complex Fourier series expansion of boundary quantities in circumferential direction. The method is implemented into a computer program, where the fundamental solutions are integrated by Gaussian Quadrature along the generator, while Fast Fourier Transf...
NEW APPROACH TO THE PATH-INTEGRAL REPRESENTATION FOR THE DIRAC PARTICLE PROPAGATOR
Alıyev, Tahmasıb; PAK, NK (1994-11-15)
The path integral representation for the propagator of a spinning particle in an external electromagnetic field is derived using the functional derivative formalism with the help of a Weyl symbol representation. The proposed method essentially simplifies the proof of the path integral representation starting from the equation for the Green function and automatically leads to a precise and unambiguous form of the boundary conditions for the Grassmann variables and puts a strong restriction on the choice of t...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Ö. F. Yalçın, “A dynamic theory for laminated composites consisting of anisotropic layers,” Ph.D. - Doctoral Program, Middle East Technical University, 2006.
