Spectral Method In Multiaxial Random Fatigue

Author : Adam Nieslony,Ewald Macha
Publisher : Springer Science & Business Media
Page : 148 pages
File Size : 41,9 Mb
Release : 2007-09-04
Category : Technology & Engineering
ISBN : 9783540738237

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Spectral Method in Multiaxial Random Fatigue by Adam Nieslony,Ewald Macha Pdf

This monograph examines the theoretical foundations of the spectral method for fatigue life determination. The authors discuss a rule of description of random loading states with the matrix of power spectral density functions of the stress/strain tensor components. Some chosen criteria of multiaxial fatigue failure are analyzed. The formula proposed in this book enables readers to determine power spectral density of the equivalent history directly from the components of the power spectral density matrix of the multidimensional stochastic process.

Author : Janko Slavič,Miha Boltezar,Matjaz Mrsnik,Martin Cesnik,Jaka Javh
Publisher : Elsevier
Page : 230 pages
File Size : 40,5 Mb
Release : 2020-08-20
Category : Technology & Engineering
ISBN : 9780128223666

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Vibration Fatigue by Spectral Methods by Janko Slavič,Miha Boltezar,Matjaz Mrsnik,Martin Cesnik,Jaka Javh Pdf

Vibration Fatigue by Spectral Methods relates the structural dynamics theory to the high-cycle vibration fatigue. The book begins with structural dynamics theory and relates the uniaxial and multiaxial vibration fatigue to the underlying structural dynamics and signal processing theory. Organized in two parts, part I gives the theoretical background and part II the selected experimental research. The time- and frequency- domain aspects of signal processing in general, related to structural dynamics and counting methods are covered in detail. It also covers all the underlying theory in structural dynamics, signal processing, uniaxial & multiaxial fatigue; including non-Gaussianity and non-stationarity. Finally, it provides the latest research on multiaxial vibration fatigue and the non-stationarity and non-Gaussianity effects. This book is for engineers, graduate students, researchers and industry professionals working in the field of structural durability under random loading and vibrations and also those dealing with fatigue of materials and constructions. Introduces generalized structural dynamics theory of multiaxial vibration fatigue Maximizes understanding of structural dynamics theory in relation to frequency domain fatigue Illustrates connections between experimental work and theory with case studies, cross-referencing, and parallels to accelerated vibration testing

Author : Pedro H. Alves Corrêa
Publisher : Editora Dialética
Page : 68 pages
File Size : 45,9 Mb
Release : 2022-08-01
Category : Technology & Engineering
ISBN : 9786525253213

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Spectral method for fatigue damage estimation with non-zero mean stress by Pedro H. Alves Corrêa Pdf

This thesis consists of a fatigue study carried out on an aluminum alloy 2024-T3 in both time domain and frequency domain. Non-zero mean random signals of strain and stress are analyzed in time domain using usual Rainflow method and the damage is accumulated with the Palmgren-Miner rule, according to mean stress equations. The signals are analyzed in frequency domain using the power spectral density and the probability density function. The spectral domain analysis does not consider the negative effect of the mean stress in metal life under fatigue, so the correction factors for mean stresses developed by Goodman, Morrow, and Smith-Watson-Topper are used to change the power spectral density and, thus, the damage calculated by the probability density functions postulated by Dirlik and Tovo and Benasciutti. It is found that both Dirlik and Tovo and Benasciutti are non-conservative for a non-zero mean stress signal when comparing the damage to the one obtained in time domain analysis. When the spectral method is corrected, the results vary from Rainflow 4.9% for wide band and 6.8% for narrow band signals, always in the conservative zone, therefore predicting more damage. Tovo and Benasciutti 2 method is found to be the spectral function with the closest results when compared to the usual Rainflow method in time domain.

Author : Jan Awrejcewicz
Publisher : Springer
Page : 446 pages
File Size : 54,6 Mb
Release : 2016-09-02
Category : Mathematics
ISBN : 9783319424026

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Dynamical Systems: Modelling by Jan Awrejcewicz Pdf

The book is a collection of contributions devoted to analytical, numerical and experimental techniques of dynamical systems, presented at the international conference "Dynamical Systems: Theory and Applications," held in Łódź, Poland on December 7-10, 2015. The studies give deep insight into new perspectives in analysis, simulation, and optimization of dynamical systems, emphasizing directions for future research. Broadly outlined topics covered include: bifurcation and chaos in dynamical systems, asymptotic methods in nonlinear dynamics, dynamics in life sciences and bioengineering, original numerical methods of vibration analysis, control in dynamical systems, stability of dynamical systems, vibrations of lumped and continuous systems, non-smooth systems, engineering systems and differential equations, mathematical approaches to dynamical systems, and mechatronics.

Author : P. Johannesson,M. Speckert
Publisher : John Wiley & Sons
Page : 469 pages
File Size : 45,7 Mb
Release : 2013-08-29
Category : Technology & Engineering
ISBN : 9781118700501

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Guide to Load Analysis for Durability in Vehicle Engineering by P. Johannesson,M. Speckert Pdf

The overall goal of vehicle design is to make a robust and reliable product that meets the demands of the customers and this book treats the topic of analysing and describing customer loads with respect to durability. Guide to Load Analysis for Vehicle and Durability Engineering supplies a variety of methods for load analysis and also explains their proper use in view of the vehicle design process. In Part I, Overview, there are two chapters presenting the scope of the book as well as providing an introduction to the subject. Part II, Methods for Load Analysis, describes useful methods and indicates how and when they should be used. Part III, Load Analysis in view of the Vehicle Design Process, offers strategies for the evaluation of customer loads, in particular characterization of customer populations, which leads to the derivation of design loads, and finally to the verification of systems and components. Key features: • Is a comprehensive collection of methods for load analysis, vehicle dynamics and statistics • Combines standard load data analysis methods with statistical aspects on deriving test loads from surveys of customer usage • Sets the methods used in the framework of system dynamics and response, and derives recommendations for the application of methods in engineering practice • Presents a reliability design methodology based on statistical evaluation of component strength and customers loads • Includes case studies and illustrative examples that translate the theory into engineering practice Developed in cooperation with six European truck manufacturers (DAF, Daimler, Iveco, MAN, Scania and Volvo) to meet the needs of industry, Guide to Load Analysis for Vehicle and Durability Engineering provides an understanding of the current methods in load analysis and will inspire the incorporation of new techniques in the design and test processes.

Author : Peter C. McKeighan,Narayanaswami Ranganathan
Publisher : ASTM International
Page : 588 pages
File Size : 41,7 Mb
Release : 2005
Category : Aluminum alloys
ISBN : 9780803134799

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Fatigue Testing and Analysis Under Variable Amplitude Loading Conditions by Peter C. McKeighan,Narayanaswami Ranganathan Pdf

Author : Jan Awrejcewicz,Roman Szewczyk,Maciej Trojnacki,Małgorzata Kaliczyńska
Publisher : Springer
Page : 482 pages
File Size : 53,9 Mb
Release : 2014-09-24
Category : Technology & Engineering
ISBN : 9783319109909

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Mechatronics: Ideas for Industrial Applications by Jan Awrejcewicz,Roman Szewczyk,Maciej Trojnacki,Małgorzata Kaliczyńska Pdf

This book presents recent advances and developments in control, automation, robotics, and measuring techniques. It presents contributions of top experts in the fields, focused on both theory and industrial practice. The particular chapters present a deep analysis of a specific technical problem which is in general followed by a numerical analysis and simulation, and results of an implementation for the solution of a real world problem. The presented theoretical results, practical solutions and guidelines will be useful for both researchers working in the area of engineering sciences and for practitioners solving industrial problems.

Author : Francesco Iacoviello,Luca Susmel
Publisher : Gruppo Italiano Frattura
Page : 314 pages
File Size : 44,5 Mb
Release : 2011-12-20
Category : Reference
ISBN : 9788895940410

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Frattura ed Integrità Strutturale: Annals 2010 by Francesco Iacoviello,Luca Susmel Pdf

Author : Dariusz Skibicki
Publisher : Springer
Page : 126 pages
File Size : 50,9 Mb
Release : 2014-06-09
Category : Science
ISBN : 9783319015651

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Phenomena and Computational Models of Non-Proportional Fatigue of Materials by Dariusz Skibicki Pdf

This book gives an overview on the fatigue of materials under non-proportional loads. It presents the rich spectrum of phenomena and treats various computational models to mathematically describe the non-proportional fatigue of materials.

Author : Claude Bathias,André Pineau
Publisher : John Wiley & Sons
Page : 415 pages
File Size : 43,8 Mb
Release : 2013-03-04
Category : Technology & Engineering
ISBN : 9781118623374

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Fatigue of Materials and Structures by Claude Bathias,André Pineau Pdf

The design of mechanical structures with improved and predictable durability cannot be achieved without a thorough understanding of the mechanisms of fatigue damage and more specifically the relationships between the microstructure of materials and their fatigue properties. Written by leading experts in the field, this book (which is complementary to Fatigue of Materials and Structures: Application to Damage and Design, also edited by Claude Bathias and André Pineau), provides an authoritative, comprehensive and unified treatment of the mechanics and micromechanisms of fatigue in metals, polymers and composites. Each chapter is devoted to one of the major classes of materials or to different types of fatigue damage, thereby providing overall coverage of the field. The book deals with crack initiation, crack growth, low-cycle fatigue, gigacycle fatigue, shorts cracks, fatigue micromechanisms and the local approach to fatigue damage, corrosion fatigue, environmental effects and variable amplitude loadings, and will be an important and much used reference for students, practicing engineers and researchers studying fracture and fatigue in numerous areas of mechanical, structural, civil, design, nuclear, and aerospace engineering as well as materials science.

Author : Jan Awrejcewicz
Publisher : Springer
Page : 421 pages
File Size : 40,6 Mb
Release : 2016-09-17
Category : Mathematics
ISBN : 9783319424088

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Dynamical Systems: Theoretical and Experimental Analysis by Jan Awrejcewicz Pdf

The book is the second volume of a collection of contributions devoted to analytical, numerical and experimental techniques of dynamical systems, presented at the international conference "Dynamical Systems: Theory and Applications," held in Łódź, Poland on December 7-10, 2015. The studies give deep insight into new perspectives in analysis, simulation, and optimization of dynamical systems, emphasizing directions for future research. Broadly outlined topics covered include: bifurcation and chaos in dynamical systems, asymptotic methods in nonlinear dynamics, dynamics in life sciences and bioengineering, original numerical methods of vibration analysis, control in dynamical systems, stability of dynamical systems, vibrations of lumped and continuous sytems, non-smooth systems, engineering systems and differential equations, mathematical approaches to dynamical systems, and mechatronics.

Author : Ahmad Varvani Farahani
Publisher : Southampton ; Boston : WIT Press
Page : 530 pages
File Size : 40,7 Mb
Release : 2005
Category : Technology & Engineering
ISBN : UOM:39015062858496

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Advances in Fatigue, Fracture and Damage Assessment of Materials by Ahmad Varvani Farahani Pdf

This title presents the fundamental elements and theories in fracture and damage analysis, plus the recent research and advances in the development of the analytical and practical approaches required to assess the materials damage and the durability of structures.

Author : Isaac Elishakoff
Publisher : Springer Nature
Page : 356 pages
File Size : 46,5 Mb
Release : 2020-04-11
Category : Technology & Engineering
ISBN : 9783030403942

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Dramatic Effect of Cross-Correlations in Random Vibrations of Discrete Systems, Beams, Plates, and Shells by Isaac Elishakoff Pdf

This volume explains the dramatic effect of cross-correlations in forming the structural response of aircraft in turbulent excitation, ships in rough seas, cars on irregular roads, and other dynamic regimes. It brings into sharp focus the dramatic effect of cross correlations often neglected due to the analytical difficulty of their evaluation. Veteran author Professor Isaac Elishakoff illustrates how neglect of cross correlations could result in underestimation of the response by tens or hundreds of percentages the effect of the random vibrations of structures’ main elements, including beams, plates, and shells.

Author : A.E Mansour,R.C Ertekin
Publisher : Elsevier
Page : 860 pages
File Size : 51,5 Mb
Release : 2003-06-26
Category : Technology & Engineering
ISBN : 008054116X

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Proceedings of the 15th International Ship and Offshore Structures Congress by A.E Mansour,R.C Ertekin Pdf

KEY FEATURES: Provides researchers in Ocean engineering with a thorough review of the latest research in the field Lengthy reports by leading experts A valuable resource for all interested in ocean engineering DESCRIPTION: The International Ship and Offshore Congress (ISSC) is a forum for the exchange of information by experts undertaking and applying marine structural research. These three volumes contain the eight technical committee reports, six Specialist Committee and 2 Special Task Committee reports which were presented for the 15th International Ship and Offshore Structures Congress (ISSC 2004) in San Diego USA, between 11th and 15th August 2003. Volume III will be published in 2004 and is to contain the discussion of the reports, the chairmen's reply, the text of the invited Lecture and the congress report of ISSC 2003.

Author : Anonim
Publisher : Unknown
Page : 400 pages
File Size : 40,5 Mb
Release : 1948
Category : Mechanics, Applied
ISBN : OSU:32435026160655

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Applied mechanics reviews by Anonim Pdf