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Optimization of torsional vibration damper of cranktrain system using a hybrid damping approach

SEZGEN, Haşmet Çağrı

The focus of this research is to develop the optimum design of torsional vibration damper using hybriddamping approach to decrease the torsional vibrations in the cranktrain system of internal combustionengines (ICE). For this purpose, a double mass rubber and viscous torsional vibration damper (DMRV-TVD) are combined. The optimization procedure is carried out using genetic algorithm (GA) to determinethe best hybrid damping performance on cranktrain system of a four stroke and four cylinder dieselengine. Accordingly, twelve degrees of freedom lumped mass mathematical model of the proposed cran ...Daha fazlası

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A Novel Design of Interval Type-2 Neuro-Fuzzy Controller for Flexible Structure

TINKIR, Mustafa | KALYONCU, Mete | SEZGEN, Haşmet Çağrı

The aim of this research is to develop a novel design of interval type-2 neuro-fuzzy (IT2NF) controller for active vibration control of a flexible structure during an earthquake. For this purpose, two adaptive neural network based fuzzy logic controllers are designed and combined to create the novel design of an IT2NF controller to reduce the vibrations of two-storey flexible building model that occur during earthquake disturbance effects. Accordingly, dynamic modeling of a flexible structure is realized and simulated using the MATLAB / SimMechanics. Then, an experimental setup consisting of t ...Daha fazlası

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Torsional Natural Frequency Analysis Of Torsional Vibration Damper Using Numerical And Modal Test Approaches

SEZGEN, Haşmet Çağrı

This work presents to obtain the torsional natural frequencies and mode shapes of the torsional vibration damper. The torsional vibration damper is mounted on the end of the crankshaft in the opposite direction of the flywheel to dampen the torsional vibrations, especially high-torque diesel engines. The torsional vibration damper used in the study consists of thirteen elements include rubber, silicone and other materials. Therefore, in this study, the Holzer, matrix, finite element methods and modal test are realized to determine the torsional natural frequencies and mode shapes of the propos ...Daha fazlası

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Torsional Natural Frequency Analysis Of A Cranktrain System Using Holzer And Finite Element Method

SEZGEN, Haşmet Çağrı

This study aims to obtain the torsional natural frequencies and mode shapes of the twelve degrees of freedom cranktrain system consisting of a flywheel, crankshaft, and torsional vibration damper elements using Holzer and finite element methods. An equivalent lumped mass model of the proposed cranktrain system is created by considering twelve masses connected with spring and damping elements. In equivalent modeling approach, eight elements of the lumped mass model are connected in series, the rest four masses are connected by three parallel branchings. Also, these four masses express the torsi ...Daha fazlası

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