G. Aşkar Altay
Boğaziçi University
9 Papers
167 Citations
G. Aşkar Altay is an academic researcher from Boğaziçi University. The author has contributed to research in topics: Variational principle & Calculus of variations. The author has an hindex of 7, co-authored 9 publications. Previous affiliations of G. Aşkar Altay include Istanbul Technical University.
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Papers
Fundamental variational equations of discontinuous thermopiezoelectric fields
G. Aşkar Altay,M. Cengiz Dökmeci +1 more
TL;DR: In this article, the fundamental equations of a thermopiezoelectric medium are expressed as the Euler-Lagrange equations of certain variational principles, deduced from a general principle of continuum physics by modifying it through an involutory (Legendre's or Friedrichs's) transformation.
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Some variational principles for linear coupled thermoelasticity
G. Aşkar Altay,M. Cengiz Dökmeci +1 more
TL;DR: In this article, the governing equations describing the physical behavior of a thermoelastic continuum were expressed as the Euler-Lagrange equations of certain variational principles, guided by the principle of virtual work.
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Some comments on the higher order theories of piezoelectric, piezothermoelastic and thermopiezoelectric rods and shells
G. Aşkar Altay,M. Cengiz Dökmeci +1 more
TL;DR: In this article, the derivations of the higher-order theories for the dynamic analysis of electroelastic (i.e., piezoelectric, piezothermoelastic) structural elements of uniform cross-section (or uniform thickness) are discussed.
27
A uniqueness theorem in Biot's poroelasticity theory
G. Aşkar Altay,M. Cengiz Dökmeci +1 more
TL;DR: In this article, the uniqueness of a solution of the initial-mixed boundary value problems defined by the generally accepted poroelastic equations presented by Biot is investigated in a solution to a problem with boundary and initial conditions, without imposing the positive definiteness conditions of material elasticities.
22
A non-linear rod theory for high-frequency vibrations of thermopiezoelectric materials
G. Aşkar Altay,M. Cengiz Dökmeci +1 more
TL;DR: In this article, a unified variational principle of differential type is presented which describes the fundamental equations of thermopiezoelectricity with second sound, including the physical and geometrical nonlinearities.
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