COMPUTATIONAL WELDING MECHANICS

Major objective of this book

The content of this book is divided into nine chapters. This short chapter is an introduction to the following chapters that discuss vari­ous subjects related to “Computational Welding Mechanics”. “Com­puter Simulation of Welding Processes” is the title of chapter two. The third chapter, “Thermal Analysis of Welds” provides the neces­sary background information for thermal stress fields, structure dis­tortion and deformation in order to enable those readers whose knowledge in these areas is limited, to understand the remainder of book. The heat supplied by the welding process produces complex thermal cycles in the weldment and these in turn cause changes in the microstructure of the heat affected zone, as well as the transient thermal stress. This results in the creation of residual stresses and distortions in the finished product. In order to analyze these prob­lems chapters four to six discuss analyzing the heat flow during welding, microstructure evolution and distortion analysis. Applica­tions of welding in industrial fields and the feasibility of real-time analysis will be presented in chapters seven. Cracks may occur in the weld metal or in the heat affected zone. Chapter eight discusses the fracture of the weldment. The authors’ preferred input data for a Computational Weld Mechanics analysis are described in chapter nine.

COMPUTATIONAL WELDING MECHANICS

Fracture Mechanics of Welded Structures

For fracture mechanics the location and geometry of the crack or defect must be specified as input data. The crack geometry could be specified as an ordered set of points …

Material Properties Summary

Properties can be provided for a material or alloy or for a specific phase in a material or alloy. If properties are provided for a specific phase, then the macroscopic …

Weld Pool Solver

If there is a weld pool solver that computes the weld pool free surface, velocity and temperature in the weld pool and weld pool reinforcement, the input data should include …

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