Hasan Nevzat Özgüven

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ozguven@metu.edu.tr
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Experimental Quantification and Validation of Modal Properties of Geometrically Nonlinear Structures by Using Response-Controlled Stepped-Sine Testing
Karaagacli, T.; Özgüven, Hasan Nevzat (2021-10-01)
Background Various nonlinear system identification methods applicable to distributed nonlinearities have been developed over the last decade. However, many of them are not eligible to accurately quantify a high degree of n...
Ideal tooth profile modifications for improving nonlinear dynamic response of planetary gear trains
Ozturk, Veysel Yalin; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (2021-05-01)
The ultimate goal in this study is to investigate the effects of tooth profile modifications (TPMs) on PGTs by performing parametric studies. For this purpose, firstly a nonlinear planetary gear dynamics model with time-va...
Obituaries: Ahmet ACAR
Özgüven, Hasan Nevzat; Oran, Adil; Sargın, Güven Arif; Pamir, Haluk; Özgenel, Lale; Savaş Sargın, Ayşen; Atalay, Mehmet Volkan; Güner, Zehra Nuray; Onay, Lamia Zeynep (Orta Doğu Teknik Üniversitesi (Ankara, Turkey), 2021-1-01)
Experimental modal analysis of nonlinear systems by using response-controlled stepped-sine testing
Karaağaçlı, Taylan; Özgüven, Hasan Nevzat (Elsevier BV, 2021-1)
Although the identification and analysis of structures with a localized nonlinearity, either weak or strong, is within reach, identification of multiple nonlinearities coexisting at dif- ferent locations is still a challen...
A frequency domain nonparametric identification method for nonlinear structures: Describing surface method
Karaagacli, Taylan; Özgüven, Hasan Nevzat (Elsevier BV, 2020-10-01)
In this paper a new method called 'Describing Surface Method' (DSM) is developed for nonparametric identification of a localized nonlinearity in structural dynamics. The method makes use of the Nonlinearity Matrix concept ...
Integration of Parameter Sensitivity to Structural Optimization of Helicopter Rotors for Minimum Vibration
Bilen, Muhammed Emre; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (CRC, New York , 2020-10-01)
Helicopters are notorious for their high vibration levels and the rotor systems are the main contributors to the problem. Rotor vibrations can be minimized by optimizing the rotor structure. However, the result of the opti...
Integration of parameter sensitivity to structural optimization of helicopter rotors for minimum vibration
Bilen, Muhammed Emre; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (CRC, New York , 2020-10-01)
Helicopters are notorious for their high vibration levels and the rotor systems are the main contributors to the problem. Rotor vibrations can be minimized by optimizing the rotor structure. However, the result of the opti...
A novel modal superposition method with response dependent nonlinear modes for periodic vibration analysis of large MDOF nonlinear systems
Ferhatoglu, Erhan; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (Elsevier BV, 2020-01-01)
Design of complex mechanical structures requires to predict nonlinearities that affect the dynamic behavior considerably. However, finding the forced response of nonlinear structures is computationally expensive, especiall...
Evaluation of Surrogate-Based Modeling Methods for the Optimization of Helicopter Rotor Structures for Minimum Vibration
Bilen, Muhammed Emre; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (null; 2019-11-02)
Helicopters are notorious for their high vibration levels and the rotors are the main contributors. At preliminary stages, it is essential to design the rotors to achieve minimum vibration amplitudes, which is generally re...
Identifying the joint dynamics of a bolted beam system by using FRF decoupling and the SEMM expansion technique
Klaassen, Steven W. B.; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (null; 2019-07-31)
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