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Gemi İnşaatı ve Gemi Makineleri Mühendisliği

Gemi İnşaatı ve Gemi Makineleri Mühendisliği

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Evaluation of dynamic behaviour of porous media including micro-cracks by ordinary state-based peridynamics

Ozdemir, M.; Oterkus, S.; Oterkus, E.; Amin, I; Nguyen, C. T.; Tanaka, S.; El-Aassar, A.; Shawky, H. (SPRINGER-NEW YORK, 2023)

Reliable evaluation of mechanical response in a porous solid might be challenging without any simplified assumptions. Peridynamics (PD) perform very well on a medium including pores owing to its definition, which is valid ...
A simple antifouling coating selection exhibits notable benefits for industrial fishing vessels

Ozyurt, Refik; Uzun, Dogancan; Terzi, Yahya; Saffak, Savas; Atlar, Mehmet; Turan, Osman (PERGAMON-ELSEVIER SCIENCE LTD-OXFORD, 2023)

Impacts of biofouling were evaluated in-real conditions as a decision support system for industrial purse seiners and trawlers operating in the Mediterranean and the Black Sea (GFCM) in a fishing season. Initially, ...
Optimising ship manoeuvring time during port approach using a decision support system: a case study in Turkey

Yalcin, Ender; Pehlivan, Enes Fatih; Cetin, Baris Anil; Aymelek, Murat (TAYLOR & FRANCIS LTD-ABINGDON, 2023)

Any cost reductive initiative is significant to contribute to the overall viability and economic sustainability of the industry. Therefore, it is worthy to study time and cost efficiency of ship manoeuvring when approaching ...
Performance prediction of cavitating marine current turbine by BEMT based on CFD

Karaalioglu, Mehmet Salih; Bal, Sakir (PERGAMON-ELSEVIER SCIENCE LTD-OXFORD, 2022)

In the present study, the hydrodynamic performance of cavitating and non-cavitating marine current turbines (MCTs) has been investigated by blade element momentum theory (BEMT) coupled with Reynolds-averaged Navier-Stokes ...
Evaluation of dynamic behaviour of porous media including micro-cracks by ordinary state-based peridynamics

Ozdemir, M.; Oterkus, S.; Oterkus, E.; Amin, I; Nguyen, C. T.; Tanaka, S.; El-Aassar, A.; Shawky, H. (SPRINGER NEW YORK, 2021)

Reliable evaluation of mechanical response in a porous solid might be challenging without any simplified assumptions. Peridynamics (PD) perform very well on a medium including pores owing to its definition, which is valid ...
Influences of the dead end on the flow characteristics at the exhaust manifold of a marine diesel engine

Benek, Gorkem; Ozsoysal, Osman Azmi (YILDIZ TECHNICAL UNIV ISTANBUL, 2021)

A 3D Computational Fluid Dynamics (CFD) model of an exhaust manifold with and without a dead end has been developed to investigate the impacts of its geometry on the flow structure and the pressure distribution within the ...
Numerical buckling analysis for flat and cylindrical shells including through crack employing effective reproducing kernel meshfree modeling

Bui, T. Q.; Ozdemir, M.; Sadamoto, S.; Tanaka, S.; Yu, T. T. (ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2018)

Buckling behavior of flat and cylindrical shells including through-the-thickness crack (through crack) is examined employing an effective reproducing kernel (RK) meshfree method. The concept of convected coordinate system ...
A new method to estimate ultimate strength of stiffened panels under longitudinal thrust based on analytical formulas

Ergin, Ahmet; Ozdemir, Murat; Tanaka, Satoyuki; Yanagihara, Daisuke; Yao, Tetsuya (ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2018)

In this paper, a new approximate method based on analytical formulas is proposed to estimate the ultimate strength of stiffened panels by investigating collapse mechanisms of the stiffened panels. In this respect, firstly, ...
A smoothed variable horizon peridynamics and its application to the fracture parameters evaluation

Imachi, M.; Oterkus, E.; Oterkus, S.; Ozdemir, M.; Takei, T.; Tanaka, S. (SPRINGER WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA, 2020)

Peridynamics has attractive features for solving several fracture mechanics problems. On the other hand, to ensure the accuracy, a large amount of particles (material points) is required. Introduction of variable horizon ...
Dynamic fracture analysis of functionally graded materials using ordinary state -based peridynamics

Imachi, M.; Kefal, A.; Oterkus, E.; Ozdemir, M.; Tanaka, S. (ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2020)

Functionally graded materials are regarded as a special kind of composites capable of eliminating material interfaces and the delamination problems. Stress discontinuity can be avoided owing to smooth composition of the ...
Finite rotation meshfree formulation for geometrically nonlinear analysis of flat, curved and folded shells

Bui, T. Q.; Okazawa, S.; Ozdemir, M.; Sadamoto, S.; Tanaka, S. (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2020)

Geometrically nonlinear analysis of flat, curved and folded shells under finite rotations is performed by enhanced six degrees of freedom (6-DOFs) meshfree formulation. Curvilinear surfaces are dealt with the concept of ...
Dynamic crack arrest analysis by ordinary state-based peridynamics

Imachi, Michiya; Oterkus, Erkan; Oterkus, Selda; Ozdemir, Murat; Tanaka, Satoyuki; Tinh Quoc Bui (SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS, 2020)

Dynamic fracture analysis for the crack arrest phenomenon is performed by ordinary state-based peridynamics formulation and discretization employing transition bond concept. Double cantilever beam specimen is chosen for ...

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