Finite Element Analysis of Residual Stress Generation During Spot Welding and Its Affect on Fatigue Behavior of Spot Welded Joints
Title | Finite Element Analysis of Residual Stress Generation During Spot Welding and Its Affect on Fatigue Behavior of Spot Welded Joints PDF eBook |
Author | Xin Long |
Publisher | |
Pages | |
Release | 2005 |
Genre | Electric welding |
ISBN |
This dissertation presents the finite element based prediction of residual stress generation in a spot welded joint during the spot welding process and the effects of residual stress on fatigue behavior of a spot welded joint. Spot welded advanced high strength steels, namely dual phase DP600 GI and transformation induced plasticity TRIP600 steels were investigated for their fatigue life, microstructure changes and fatigue fracture mechanisms to develop design data for possible application in future light weight and more fuel efficiency automobiles.
Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments
Title | Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments PDF eBook |
Author | Paolo Ferro |
Publisher | BoD – Books on Demand |
Pages | 164 |
Release | 2018-05-16 |
Genre | Technology & Engineering |
ISBN | 178923106X |
The ability to quantify residual stresses induced by welding processes through experimentation or numerical simulation has become, today more than ever, of strategic importance in the context of their application to advanced design. This is an ongoing challenge that commenced many years ago. Recent design criteria endeavour to quantify the effect of residual stresses on fatigue strength of welded joints to allow a more efficient use of materials and a greater reliability of welded structures. The aim of the present book is contributing to these aspects of design through a collection of case-studies that illustrate both standard and advanced experimental and numerical methodologies used to assess the residual stress field in welded joints. The work is intended to be of assistance to designers, industrial engineers and academics who want to deepen their knowledge of this challenging topic.
Fatigue Analysis of Welded Components
Title | Fatigue Analysis of Welded Components PDF eBook |
Author | E. Niemi |
Publisher | Woodhead Publishing |
Pages | 56 |
Release | 2006-09-27 |
Genre | Technology & Engineering |
ISBN | 1845696662 |
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
Title | Stress Determination for Fatigue Analysis of Welded Components PDF eBook |
Author | E. Niemi |
Publisher | Woodhead Publishing |
Pages | 80 |
Release | 1995-04-30 |
Genre | Technology & Engineering |
ISBN | 9781855732131 |
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
Title | Fatigue Assessment of Welded Joints by Local Approaches PDF eBook |
Author | Dieter Radaj |
Publisher | Woodhead Publishing |
Pages | 661 |
Release | 2006-10-30 |
Genre | Technology & Engineering |
ISBN | 1845691881 |
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
Experimental and Applied Mechanics, Volume 6
Title | Experimental and Applied Mechanics, Volume 6 PDF eBook |
Author | Nancy Sottos |
Publisher | Springer |
Pages | 202 |
Release | 2014-08-02 |
Genre | Science |
ISBN | 3319069896 |
Experimental and Applied Mechanics, Volume 6: Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics, the sixth volume of eight from the Conference, brings together contributions to important areas of research and engineering. The collection presents early findings and case studies on a wide range of topics, including: Advances in Residual Stress Measurement Methods Residual Stress Effects on Material Performance Inverse Problems and Hybrid Techniques Thermoelastic Stress Analysis Infrared Techniques Research in Progress Applications in Experimental Mechanics
Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening
Title | Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening PDF eBook |
Author | Gkatzogiannis, Stefanos |
Publisher | KIT Scientific Publishing |
Pages | 316 |
Release | 2022-06-30 |
Genre | Technology & Engineering |
ISBN | 3731510669 |
Research goal of the present monograph is the establishment of an efficient engineering approach, which will include straightforward but accurate simulation models, in order to estimate the residual stress fields of welded joints introduced during welding and their post-weld treatment with High Frequency Hammer Peening. The present subject lies on the intersection of structural engineering, material science and computational mechanics.