Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components : Designer's Guide.

Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components : Designer's Guide.

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Bibliographic Details
Main Author: Niemi, Erkki
Other Authors: Fricke, Wolfgang, Maddox, Stephen J.
Format: eBook
Language:English
Published: Singapore : Springer Singapore, 2017.
Edition:2nd ed.
Series:IIW Collection.
Subjects:
Welded joints > Fatigue.
Welded joints > Fatigue
Online Access:Click for online access
Table of Contents:
  • Preface; Contents; Abstract; 1 Introduction; 1.1 General; 1.2 Safety Aspects; References; 2 The Structural Hot-Spot Stress Approach to Fatigue Analysis; 2.1 Field of Application; 2.2 Types of Hot Spot; 2.3 Definition of the Structural Stress at a Type "a" Hot-Spot; 2.4 Use of Stress Concentration Factors; 2.4.1 Modified Nominal Stress; 2.4.2 Structural Stress Concentration Factors, Ks; 2.4.3 Stress Magnification Factor Due to Misalignment Km; 2.5 Effect of Component Size on the Fatigue Resistance; References; 3 Experimental Determination of the Structural Hot-Spot Stress; 3.1 General.
  • 3.2 Type "a" Hot Spots3.3 Type "b" Hot Spots; References; 4 Structural Hot-Spot Stress Determination Using Finite Element Analysis; 4.1 General; 4.2 Choice of Element Type; 4.3 Methods for Determination of Structural Hot-Spot Stress; 4.3.1 Determination of the Structural Stress at the Weld Toe Using Through-Thickness Linearization; 4.3.2 Determination of the Structural Stress at the Weld Toe Using Surface Stress Extrapolation; 4.3.3 Determination of the Structural Stress at a Single Point Close to the Weld Toe; 4.4 Use of Relatively Coarse Element Meshes; 4.4.1 Solid Element Modelling.
  • 4.4.2 Thin Shell (or Plate) Element Modelling4.4.3 Hot-Spot Stress Extrapolation; 4.5 Use of Relatively Fine Element Meshes; 4.5.1 Solid Element Modelling; 4.5.2 Thin Shell (or Plate) Element Modelling; 4.5.3 Hot-Spot Stress Extrapolation; 4.6 Modelling Fillet Welds in Shell Element Models; References; 5 Parametric Formulae; 5.1 Misalignment; 5.1.1 Axial Misalignment Between Flat Plates of Equal Thickness Under Axial Loading; 5.1.2 Axial Misalignment Between Flat Plates of Differing Thickness Under Axial Loading; 5.1.3 Axial Misalignment Between Tubes or Pipes Under Axial Loading.
  • 5.1.4 Axial Misalignment at Joints in Pressurized Cylindrical Shells with Thickness Change5.1.5 Angular Misalignment Between Flat Plates of Equal Thickness Under Axial Loading; 5.1.6 Angular Misalignment at Longitudinal Joints in Pressurized Cylindrical Shells; 5.1.7 Ovality in Pressurized Cylindrical Pipes and Shells; 5.2 Structural Discontinuities; References; 6 Structural Hot-Spot S-N Curves; 6.1 General Principles; 6.2 Recommended S-N Curves for the Conventional Structural Hot-Spot Stress Approach; 6.2.1 Hot-Spot S-N Curves; 6.2.2 Hot-Spot S-N Curves for Tubular Joints in Steel.
  • 6.3 Recommended S-N Curves for the Other Structural Stress Approaches6.3.1 Structural Stress Approach According to Dong; 6.3.2 Structural Stress Approach According to Xiao and Yamada; 6.3.3 Structural Stress Approach According to Haibach; References; 7 Case Study 1: Box Beam of a Railway Wagon; 7.1 Introduction; 7.2 Materials and Methods; 7.2.1 Description of the Structure; 7.2.2 Angular Misalignment in the Web; 7.2.3 Strain Gauge Measurements; 7.2.4 Structural Hot-Spot Stress Determination; 7.2.5 S-N Curve; 7.2.6 Partial Safety Factors; 7.3 Results; 7.3.1 Stress Concentration Factor, Ks.

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