Dördüncü, Mehmet
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Dorduncu M.
Mehmet, Dorduncu
Dorduncu, Mehmet
Mehmet, Dorduncu
Dorduncu, Mehmet
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Email Address
mehmetdorduncu@iyte.edu.tr
Main Affiliation
03.10. Department of Mechanical Engineering
Status
Current Staff
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Documents
53
Citations
1501
h-index
19
Documents
36
Citations
1050
Scholarly Output
5
Articles
4
Views / Downloads
191/9
Supervised MSc Theses
0
Supervised PhD Theses
0
WoS Citation Count
16
Scopus Citation Count
17
Patents
0
Projects
0
WoS Citations per Publication
3.20
Scopus Citations per Publication
3.40
Open Access Source
1
Supervised Theses
0
| Journal | Count |
|---|---|
| Archive of Applied Mechanics | 1 |
| Engineering Analysis With Boundary Elements | 1 |
| Engineering with Computers | 1 |
| Mechanics of Advanced Materials and Structures | 1 |
| World Congress in Computational Mechanics and ECCOMAS Congress | 1 |
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5 results
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Now showing 1 - 5 of 5
Article Elasto-Plastic Phase-Field Modeling of Fracture in FDM-Printed ABS Components: Numerical Implementation and Experimental Validation(Taylor and Francis Ltd., 2025) Dengiz, C.G.; Yorulmazlar, B.; Dorduncu, M.; Taşdemirci, A.This study presents a computational framework for predicting fracture behavior in 3D-printed acrylonitrile butadiene styrene (ABS) components using an elasto-plastic phase-field approach (PFA) implemented within the ABAQUS finite element environment. A user-defined element (UEL) subroutine is employed to solve the coupled displacement and damage equations through a staggered scheme. The model captures crack initiation and propagation under various stress states and specimen configurations, including pure shear, oblique shear, and tensile loading, without requiring predefined crack paths or remeshing. Numerical predictions are validated against experimental results, showing strong agreement in both force–displacement response and failure morphology. Parametric studies are conducted to assess the influence of mesh size, time increment, length scale parameter, and critical energy release rate on fracture response. The results demonstrate that while the peak reaction force is largely insensitive to these parameters, displacement at fracture and damage localization are significantly affected. The calibrated model successfully captures elasto-plastic fracture evolution in printed ABS specimens, confirming its robustness and generalizability. The proposed framework offers a reliable tool for failure analysis of polymer-based additively manufactured components and establishes a foundation for future extensions involving anisotropy, fatigue, and microstructural heterogeneity. © 2025 Taylor & Francis Group, LLC.Conference Object Mixed Finite Element Formulation for Laminated Composite Cylindrical Shells Based on Refined Zigzag Theory(Scipedia S.L., 2024) Bab, Y.; Kutlu, A.; Dorduncu, M.This paper presents a mixed finite element formulation to examine the linear static behavior of thin and moderately thick laminated composite cylindrical shells within the framework of the Refined Zigzag Theory (RZT). The RZT is very suitable for modeling thick and highly heterogeneous laminated composite structures without the need for the shear correction factor. The system's stationary condition is expressed by using the HellingerReissner principle. Finite element model employs four-noded quadrilateral elements with bilinear shape functions, meeting the C0 continuity requirements. The mixed finite element equations produce direct nodal displacements and stress resultants simultaneously. Comparisons and convergence analyses are performed by considering various lamination configurations and boundary conditions for validation purposes. © 2024, Scipedia S.L., All rights reserved.Article Citation - WoS: 3Citation - Scopus: 3Nonlocal Static Modeling of Laminated Composite Shells Using Peridynamic Differential Operator in a Higher-Order Shear Deformation Framework(Elsevier Ltd, 2025) Bab, Yonca; Dorduncu, Mehmet; Kutlu, Akif; Markert, BerndThis study investigates the flexural behaviour of the laminated composite shells in the framework of Higher-Order Shear Deformation Theory (HSDT) and Peridynamic Differential Operator (PDDO), namely PD-HSDT, for the first time. Laminated composite shell structures are widely used in aerospace, automotive, and marine industries due to their high strength-to-weight ratio and design flexibility. Therefore, understanding their mechanical behavior under various loading conditions is crucial for ensuring structural reliability and performance optimization. However, such structures may possess complex curvatures and highly heterogenous laminate stackings, leading to inaccurate numerical stress analyses. The HSDT successfully captures displacement and stress distributions as well as cross-sectional warping through higher-order functions exist in the kinematics. Moreover, the PDDO represents the local derivatives in their nonlocal form, making it well-suited for problems involving higher-order derivatives and discontinuities. The governing equations and boundary conditions of the HSDT are solved by using the PDDO to accurately achieve the stress and displacement fields in the laminated composite shells. The robustness of the PD-HSDT is established by considering various loading and boundary conditions. The proposed approach demonstrates high accuracy in stress and displacement predictions when validated against reference solutions available in existing literature. This indicates strong potential for extending the methodology to more complex loading scenarios and damage mechanisms in future studies.Article Citation - WoS: 6Citation - Scopus: 7Physics-Based Machine Learning for Modeling of Laminated Composite Plates Based on Refined Zigzag Theory(Springer, 2025) Ermis, Merve; Dorduncu, Mehmet; Aydogan, GokayPhysics-based machine learning techniques have recently gained prominence for their ability to model complex material and structural behavior, particularly in laminated composite structures. This study introduces an innovative approach, being the first to employ physics-informed neural networks (PINNs) in conjunction with refined zigzag theory (RZT) for the stress analysis of laminated composite plates. A multi-objective loss function integrates governing partial differential equations (PDEs) and boundary conditions, embedding physical principles into the analysis. Using multiple fully connected artificial neural networks, called feedforward deep neural networks, tailored to handle PDEs, PINNs are trained using automatic differentiation. This training process minimizes a loss function that incorporates the PDEs governing the underlying physical laws. RZT, particularly suitable for the stress analysis of thick and moderately thick plates, simplifies the formulation by using only seven kinematic variables, eliminating the need for shear correction factors. The capability of the proposed method is validated through several benchmark cases in stress analysis, including 3D elasticity solutions, analytical solutions, and experimental results from a three-point bending test based on displacement measurements reported in the literature. These results show consistent agreement with the referenced solutions, confirming the accuracy and reliability of the proposed method. Comprehensive evaluations are conducted to examine the effects of softcore presence, elastic foundation, various lamination schemes, and differing loading and boundary conditions on the stress distribution in laminated plates.Article Citation - WoS: 7Citation - Scopus: 7Bond-Based Peridynamic Fatigue Analysis of Ductile Materials With Neuber's Plasticity Correction(Springer, 2024) Altay, Ugur; Dorduncu, Mehmet; Kadioglu, Suat; Madenci, ErdoganThis study introduces an approach for performing bond-based (BB) peridynamic (PD) fatigue analysis of ductile materials. Existing BB PD fatigue models do not account for the effect of plastic deformation. The current approach addresses this by incorporating Neuber's plasticity correction concept into the fatigue model. Neuber's correction adjusts the stress and strain predictions of the PD elastic solution to account for local plastic deformation around crack tips. The PD fatigue simulations demonstrate the effectiveness of this method and improvements in fatigue life predictions by considering local plasticity effects. The numerical results first examine the response of a ductile plate without a crack under quasi-static monotonic loading. Subsequently, specimens exhibiting Mode I and mixed-mode crack propagation paths due to cyclic loading are analyzed. The PD predictions accurately capture the test data. Additionally, the model specifically investigates the effect of a stop hole on fatigue life.