Search Results - "Theocaris, P. S."

Negative Poisson's ratios in composites with star-shaped inclusions : a numerical homogenization approach by THEOCARIS, P. S, STAVROULAKIS, G. E, PANAGIOTOPOULOS, P. D

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Optimal material design in composites: An iterative approach based on homogenized cells by Theocaris, P.S., Stavroulakis, G.E.

“…An iterative method is proposed for the optimal material design of structures. The case of optimal material design with composite materials, with materials of…”
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Dating of Two Hellenic Pyramids by a Novel Application of Thermoluminescence by Theocaris, P.S., Liritzis, I., Galloway, R.B.

“…A new variant of thermoluminescence dating has been employed to determine the age of construction of two pyramids, one at Hellenikon and the other at Ligourio…”
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The homogenization method for the study of variation of Poisson's ratio in fiber composites by THEOCARIS, P. S, STAVROULAKIS, G. E

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Spectral decomposition of anisotropic elasticity by THEOCARIS, P. S, SOKOLIS, D. P

“…A newly developed approach, based on the spectral decomposition principle, which is especially useful in crystallography, is applied in this paper. The…”
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Multilevel optimal design of composite structures including materials with negative Poisson's ratio by Theocaris, P S, Stavroulakis, G E

“…Multilevel iterative optimal design procedures, horrowed from the theory of structural optimization by means of homogenization, are used in this paper for the…”
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Sorting out the elastic anisotropy of transversely isotropic materials by THEOCARIS, P. S

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Spectral decomposition of the compliance fourth-rank tensor for orthotropic materials by THEOCARIS, P. S, SOKOLIS, D. P

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The Effective Elastic Properties in Anisotropic Composites with Ellipsoidal Inclusions by Demakos, C. B., Theocaris, P. S.

“…Parallel series of ellipsoidal inclusions, aligned along their major axes, whose centers are arranged in arrays inside a matrix, result generally in an…”
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Failure criteria for isotropic bodies revisited by Theocaris, Pericles S.

“…Existing failure criteria for isotropic bodies are reconsidered in this paper and compared with modern versions taking into account either the influence of the…”
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The effective anisotropy of short-fiber composites due to fiber ellipticity by Theocaris, P.S., Demakos, C.B.

“…Series of parallel arrays of prolate spheroidal inclusions, ordered in a staggered arrangement, have been considered as representing the inclusion phase of a…”
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Failure loci of some igneous and metamorphic rocks by THEOCARIS, P. S

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The limits of Poisson's ratio in polycrystalline bodies by Theocaris, P. S.

“…While it has been established that the elastic moduli and compliances of anisotropic and isotropic materials should be positive for thermodynamic reasons, no…”
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On a family of quasi-isotropic fiber-reinforced composites by THEOCARIS, P. S

“…The spectral decomposition of the compliance and the stiffness tensors for a transversely isotropic body (fiber-reinforced composite) define in a simple and…”
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The elliptic paraboloid failure criterion for cellular solids and brittle foams by THEOCARIS, P. S

“…Cellular solids and brittle foams are increasingly finding application in constructions mainly as core materials for loaded sandwich structures where the…”
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Plasticity including the Bauschinger effect, studied by a neural network approach by THEOCARIS, P. S, PANAGIOTOPOULOS, P. D

“…In the present paper the influence of the Bauschinger effect on the subsequent yield surfaces is investigated. The developed method replaces an anisotropic…”
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On the parameter identification problem for failure criteria in anisotropic bodies by THEOCARIS, P. S, BISBOS, C, PANAGIOTOPOULOS, P. D

“…The elliptic paraboloid failure surface criterion (EPFS) is adopted in this paper to describe the failure behaviour of anisotropic bodies. A method is…”
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Calculation of effective transverse elastic moduli of fiber-reinforced composites by numerical homogenization by Theocaris, Pericles S., Stavroulakis, G.E., Panagiotopoulos, P.D.

“…Effective transverse elastic moduli for fiber-reinforced composites are calculated here by a numerical homogenization approach. The effects of fiber placement…”
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Failure criteria for weak-axis quasi-orthotropic woven fabric composites by THEOCARIS, P. S

“…The failure behavior of woven fabric composites in the form of plain weave fiber unidirectional laminae is studied as defined by their failure stresses in…”
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The paraboloid failure surface for the general orthotropic material by THEOCARIS, P. S

“…It has been established that the elliptic paraboloid failure criterion (EPFC) is a potential means of describing the yielding and failure behavior of…”
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