Ender Ciğeroğlu

Department of Mechanical Engineering
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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...
On the solution of nonlinear algebraic equations following periodic forced response analysis of nonlinear structures using different nonlinear solvers
Kizilay, H. Sefa; Ciğeroğlu, Ender (2021-01-01)
© The Society for Experimental Mechanics, Inc 2021.In periodic forced response analysis of nonlinear structures, most of the time analytical solutions cannot be obtained due to the complex behavior of the nonlinearity and/...
Vibration reduction of a structure by using nonlinear tuned vibration absorbers
Dogan, Muhammed Emin; Ciğeroğlu, Ender (2021-01-01)
© The Society for Experimental Mechanics, Inc 2021.Tuned Vibration Absorbers (TVA) are commonly used in reducing undesirable vibrations of mechanical structures. However, TVAs work in a very limited frequency range and if ...
An improved quasi-zero stiffness vibration isolation system utilizing dry friction damping
Donmez, Ata; Ciğeroğlu, Ender; Özgen, Gökhan Osman (Springer Science and Business Media LLC, 2020-07-01)
Quasi-zero stiffness (QZS) isolators, a nonlinear vibration isolation technique, enhance the isolation performance, by lowering the natural frequencies of an isolation system while providing higher static load bearing capa...
Nonlinear dynamic analysis of a drivetrain composed of spur, helical and spiral bevel gears
Yavuz, Siar Deniz; Saribay, Zihni Burcay; Ciğeroğlu, Ender (Springer Science and Business Media LLC, 2020-06-01)
This paper proposes a dynamic model for the first time in order to investigate nonlinear time-varying dynamic behavior of a drivetrain including parallel axis gears (such as spur and helical gears) and intersecting axis ge...
Enhancement of the reliability of MEMS shock sensors by adopting a dual-mass model
Fathalilou, Mohammad; Soltani, Kamran; Rezazadeh, Ghader; Ciğeroğlu, Ender (Elsevier BV, 2020-03-01)
MEMS shock sensors are widely used with applications ranging from aircraft to electrical measurement systems. They are designed to operate at the shocks above a predefined threshold level. The conventional single-mass swit...
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...
Nonlinear 3D Modeling and Vibration Analysis of Horizontal Drum Type Washing Machines
Baykal, Cem; Ciğeroğlu, Ender; Yazıcıoğlu, Yiğit (2020-01-01)
In this study, a nonlinear 3-D mathematical model for horizontal drum type washing machines is developed considering rotating unbalance type excitation. Nonlinear differential equations of motion are converted into a set o...
Nonlinear Dynamic Analysis of an Asymmetric Ball Bearing Rotor System
Bahan, Doğancan; Ciğeroğlu, Ender (2019-11-14)
Performance of ball bearing–rotor systems are highly dependent on and often limited by characteristics of ball bearings. Several studies are available in the literature, investigating varying compliance and subharmonic res...
Design of an Experimental Setup for Periodic Forced Response Analysis of Shrouded Blades with Frictional Contacts
Öney, Eren; Ciğeroğlu, Ender (null; 2019-11-02)
High-cycle fatigue is one of the most frequent reasons of failure for turbomachinery and in early design process it is crucial to predict the vibration levels. Friction dampers or frictional contacts are commonly used in t...
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