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Author: Bereket Kiflu
Publisher:
ISBN:
Category : Disks, Rotating
Languages : en
Pages : 138
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Book Description
Author: Bereket Kiflu
Publisher:
ISBN:
Category : Disks, Rotating
Languages : en
Pages : 138
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Book Description
Author: Tianyi Hu
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 43
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Book Description
In this thesis, efficient techniques are presented for analyzing the dynamics of mistuned bladed disks with cracks. The analysis of the influence of cracks coupled with the influence of mistuning on the dynamics of bladed disks is computationally challenging for several reasons: (i) complex geometry of modern turbines results in very high dimensional computational models; (ii) mistuning in these structures breaks the cyclic symmetry in these systems; and (iii) cracks further disrupt the symmetry property and introduce a piecewise-linear nonlinearity into these systems. Recently several approaches have been developed to handle these challenges individually. The component mode mistuning (CMM) approach was developed to efficiently model small mistuning in bladed disks. The X-Xr method was developed for generating reduced-order models of cyclically symmetric systems with cracks. More recently, the generalized bilinear amplitude approximation (BAA) technique was created to efficiently approximate the nonlinear vibrational response of a class of piecewise-linear nonlinear systems. This work modifies and combines these techniques, for the first time, to enable modeling and analysis of mistuned bladed disks with cracks in an efficient manner. The novel method can generate the reduced-order model of full disks using single-sector models only and approximate the nonlinear vibrational response of mistuned disks with significantly reduced computational effort. A mistuned bladed disk with a crack is parametrically studied using the proposed approach. The influence of different mistuning patterns and crack lengths on the dynamics of the system is discussed.
Author: Gísli Sigurbjörn Óttarsson
Publisher:
ISBN:
Category :
Languages : en
Pages : 442
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Book Description
Author: Alok Sinha
Publisher: Cambridge University Press
ISBN: 1108101348
Category : Science
Languages : en
Pages : 201
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Book Description
This is the first comprehensive volume on nearly periodic structures and mistuned blade vibration. Alok Sinha presents fundamental concepts and state-of-the-art techniques in the analysis of free and forced response of a nearly periodic structure, weaving together his own work (covering thirty-five years of research in this field) with works by other researchers. He also discusses similarities between tools used in bladed rotor analysis and condensed matter physics. Specific subjects covered include the reasons behind mode localization, the reasons behind amplitude amplification of steady-state response, state-of-the-art computational techniques for mistuned bladed rotors including multistage rotors, identification of mistuning from measured response, vibration localization in linear atomic chains, and analysis of two-dimensional periodic structures.
Author: Sang-Ho Lim
Publisher:
ISBN:
Category :
Languages : en
Pages : 482
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Book Description
Author: Jia Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 398
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Book Description
Author: Jan Ronnie Bladh
Publisher:
ISBN:
Category :
Languages : en
Pages : 596
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Book Description
Author: Marlin Jay Kruse
Publisher:
ISBN:
Category :
Languages : en
Pages : 330
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Book Description
Author: Andrey A. Radionov
Publisher: Springer Nature
ISBN: 3030852334
Category : Technology & Engineering
Languages : en
Pages : 908
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Book Description
This book highlights recent findings in industrial, manufacturing and mechanical engineering, and provides an overview of the state of the art in these fields, mainly in Russia and Eastern Europe. A broad range of topics and issues in modern engineering is discussed, including the dynamics of machines and working processes, friction, wear and lubrication in machines, surface transport and technological machines, manufacturing engineering of industrial facilities, materials engineering, metallurgy, control systems and their industrial applications, industrial mechatronics, automation and robotics. The book gathers selected papers presented at the 7th International Conference on Industrial Engineering (ICIE), held in Sochi, Russia, in May 2021. The authors are experts in various fields of engineering, and all papers have been carefully reviewed. Given its scope, the book will be of interest to a wide readership, including mechanical and production engineers, lecturers in engineering disciplines, and engineering graduates.
Author: IMechE
Publisher: Elsevier
ISBN: 184569709X
Category : Technology & Engineering
Languages : en
Pages : 372
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Book Description
Building on the success of an established series of successful conferences held every four years since 1978, 8th International Conference on Turbochargers and Turbocharging presents the latest technologies relating to engine pressure charging systems from international industry and academic experts in the field, covering new developments in compressors and novel intake systems; Improved models for cycle simulation; Electro boost systems; Industry trends and requirements; Turbines and mechanical aspects such as thermomechanical analysis, dynamics, and axial load capacity. - Discusses the latest technologies relating to engine pressure charging systems - Looks at mechanical aspects such as thermomechanical analysis, dynamics, and axial load capacity
