Soyarslan, Celal

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Citation - WoS: 13
Skeletonization-based beam finite element models for stochastic bicontinuous materials: Application to simulations of nanoporous gold
(Cambridge Univ Press, 2018) Soyarslan, Celal; Argeso, Hakan; Borgmann, Swantje
An efficient representative volume element generation strategy is developed in modeling nanoporous materials. It uses periodic 3D beam finite element (FE) models derived from skeletonization of spinodal-like stochastic microstructures produced by a leveled random field. To mimic stiffening with agglomeration of the mass at junctions, an increased Young's modulus is assigned to the elements within the junction zone. The effective Young's modulus, Poisson's ratio, and universal anisotropy index are computed. A good agreement of the Young's modulus predictions with those obtained from experimental results for phase volume fractions 0.20 < phi(B) < 0.50 is observed. Moreover, the elastic anisotropy index of the generated beam networks shows sufficient proximity to isotropy. Finally, it is demonstrated that, as compared to the simulation statistics of voxel-FE models, for the beam-FE models over 500-fold computational acceleration with 250-fold less memory requirement is provided.
Citation - WoS: 15
Finite deformation plasticity coupled with isotropic damage: Formulation in principal axes and applications
(Elsevier Science Bv, 2010) Soyarslan, C.; Tekkaya, A. E.
A local, isotropic damage coupled hyperelastic-plastic framework is formulated in principal axes. It is shown that, in a functional setting, treatment of many damage growth models, including those originated from phenomenological models (with formal thermodynamical derivations), micromechanics or fracture criteria, proposed in the literature, is possible. As a model problem, a Lemaitre-variant damage model with quasi-unilateral damage evolutionary forms is given with special emphasis on the feasibility of formulations in principal axes. To this end, closed form expression for the inelastic tangent moduli, consistent with the linearization of the closest point projection algorithm, is derived. It is shown that, generally, even in the absence of quasi-unilateral damage evolutionary conditions, the consistent tangent moduli are unsymmetric. The model is implemented as a user defined material subroutine (UMAT) for ABAQUS/Standard. The predictive capability of the selected model problem is studied through axi-symmetric application problems involving forward extrusion of a cylindrical billet, upsetting of a tapered specimen and tension of a notched specimen, in which characteristic failure mechanisms are observed. (C) 2010 Elsevier B.V. All rights reserved.
Citation - WoS: 2
Citation - Scopus: 2
Finite Element Analysis of Stress Distribution on Modified Retentive Tips of Bar Clasp
(Taylor & Francis Ltd, 2012) Oyar, P.; Soyarslan, C.; Can, G.; Demirci, E.
This study used finite element analysis to evaluate the retentive tips of bar clasps made from different alloys and using different designs in order to determine whether or not different materials and tip forms are suitable for bar clasp applications. Co-Cr, Ti and Type IV Au alloys were selected based on their physical and mechanical properties. The 3D finite element models of three different bar clasp retentive tip geometries prepared from Co-Cr, Ti and Type IV Au alloys were constructed using the finite element software package MSC. Marc. Analysis of a concentrated load of 5N applied to the removable partial denture approach arms in an occlusal direction was performed. Although stress distribution and localisation within bar clasps with different retentive tips were observed to be similar and were concentrated in the approach arm, stress intensities differed in all models.

Journal	Count
9th International Conference on Technology of Plasticity, ICTP 2008 -- 9th International Conference on Technology of Plasticity, ICTP 2008 -- 7 September 2008 through 11 September 2008 -- Gyeongju -- 104766	1
Computer Methods in Biomechanics and Biomedical Engineering	1
Finite Elements in Analysis and Design	1
Journal of Materials Research	1
Makina Tasarım ve Imalat Dergisi	1

Soyarslan, Celal

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NO POVERTY

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GOOD HEALTH AND WELL-BEING

QUALITY EDUCATION

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Scholarly Output

10

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7

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16/14

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2

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0

WoS Citation Count

93

Scopus Citation Count

75

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0

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WoS Citations per Publication

9.30

Scopus Citations per Publication

7.50

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2

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2

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