Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components write by Erkki Niemi. This book was released on 2017-08-28. Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components available in PDF, EPUB and Kindle. This book provides background and guidance on the use of the structural hot-spot stress approach to fatigue analysis. The book also offers Design S-N curves for use with the structural hot-spot stress for a range of weld details, and presents parametric formulas for calculating stress increases due to misalignment and structural discontinuities. Highlighting the extension to structures fabricated from plates and non-tubular sections. The structural hot-spot stress approach focuses on cases of potential fatigue cracking from the weld toe and it has been in use for many years in tubular joints. Following an explanation of the structural hot-spot stress, its definition and its relevance to fatigue, the book describes methods for its determination. It considers stress determination from both finite element analysis and strain gauge measurements, and emphasizes the use of finite element stress analysis, providing guidance on the choice of element type and size for use with either solid or shell elements. Lastly, it illustrates the use of the recommendations in four case studies involving the fatigue assessment of welded structures using the structural hot-spot stress
Fatigue Analysis of Welded Components
Fatigue Analysis of Welded Components - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fatigue Analysis of Welded Components write by E. Niemi. This book was released on 2006-09-27. Fatigue Analysis of Welded Components available in PDF, EPUB and Kindle. This report provides background and guidance on the use of the structural hot spot stress approach to the fatigue design of welded components and structures. It complements the IIW recommendations for 'Fatigue Design of Welded Joints and Components' and extends the information provided in the IIW recommendations on 'Stress Determination for Fatigue Analysis of Welded Components'. This approach is applicable to cases of potential fatigue cracking from the weld toe. It has been in use for many years in the context of tubular joints. The present report concentrates on its extension to structures fabricated from plates and non-tubular sections.Following an explanation of the structural hot spot stress, its definition and its relevance to fatigue, the authors describe methods for its determination. Stress determination from both finite element analysis and strain gauge measurements is considered. Parametric formulae for calculating stress increases due to misalignment and structural discontinuities are also presented. Special attention is paid to the use of finite element stress analysis and guidance is given on the choice of element type and size for use with either solid or shell elements. Design S-N curves for use with the structural hot spot stress are presented for a range of weld details. Finally, practical application of the recommendations is illustrated in two case studies involving the fatigue assessment of welded structures using the structural hot spot stress approach. Provides practical guidance on the application of the structural hot-spot stress approach Discusses stress determination from both finite element analysis and strain gauge measurements Practical application of the recommendations is illustrated in two case studies
Stress Determination for Fatigue Analysis of Welded Components
Stress Determination for Fatigue Analysis of Welded Components - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Stress Determination for Fatigue Analysis of Welded Components write by E. Niemi. This book was released on 1995-04-30. Stress Determination for Fatigue Analysis of Welded Components available in PDF, EPUB and Kindle. This report introduces definitions of the terminology relevant to stress determination for fatigue analysis of welded components. The various stress concentrations, stress categories and fatigue analysis methods are defined. Fatigue analysis methods considered are nominal stress, hot spot stress, notch stress, notch strain and fracture mechanics approaches. The report also contains comprehensive recommendations concerning the application of finite element methods and experimental methods for stress determination. It is intended for fatigue design of common welded structures, such as cranes, excavators, vehicle frames, bridges, ship hulls, offshore structures etc. fabricated from materials at least 3mm thick. In general, attention is focused on weld details which give rise to fatigue cracking from the surface, notably from the weld toe.
Fatigue Assessment of Welded Joints by Local Approaches
Fatigue Assessment of Welded Joints by Local Approaches - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fatigue Assessment of Welded Joints by Local Approaches write by Dieter Radaj. This book was released on 2006-10-30. Fatigue Assessment of Welded Joints by Local Approaches available in PDF, EPUB and Kindle. Local approaches to fatigue assessment are used to predict the structural durability of welded joints, to optimise their design and to evaluate unforeseen joint failures. This standard work provides a systematic survey of the principles and practical applications of the various methods. It covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Seam-welded and spot-welded joints in structural steels and aluminium alloys are also considered.This completely reworked second edition takes into account the tremendous progress in understanding and applying local approaches which has been achieved in the last decade. It is a standard reference for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. Completely reworked second edition of a standard work providing a systematic survey of the principles and practical applications of the various methods Covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Written by a distinguished team of authors
IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis
IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis write by W Fricke. This book was released on 2012-10-22. IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis available in PDF, EPUB and Kindle. The notch stress approach for fatigue assessment of welded joints is based on the highest elastic stress at the weld toe or root. In order to avoid arbitrary or infinite stress results, a rounded shape with a reference radius instead of the actual sharp toe or root is usually assumed. IIW recommendations for the fatigue assessment of welded structures by notch stress analysis reviews different proposals for reference radii together with associated S-N curves. Detailed recommendations are given for the numerical analysis of notch stress by the finite or boundary element method. Several aspects are discussed, such as the structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states. Appropriate S-N curves are presented for the assessment of the fatigue strength of different materials. Finally, four examples illustrate the application of the approach as well as the variety of structures which can be analysed and the range of results that can be obtained from different models. Provides detailed recommendations for the number analysis of notch stress by the finite or boundary element method Discusses structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states Provides four comprehensive examples, illustrating the variety of structures which can be analysed and the range of results that can be obtained from different models
