Mechanical Effects of Welding: Iutam Symposium, Luleå/Sweden, June 10-14, 1991

ISBN-13: 9783642847332 / Angielski / Miękka / 2011 / 287 str.

Lennart Karlsson; Lars-Erik Lindgren; Mikael Jonsson

Opis

The field of welding is an area which includes a large num- ber of scientific disciplines, such as materials science, solid mechanics, thermal science and mechanical engineering design and production engineering. The intention of the Sym- posium was to cover the direct mechanical effects of welding and their influence on the in-service behaviour of welded structures. The mechanical effects of welding is a very ap- propriate theme for an IUTAM Symposium. Progress in this field requires close interaction between researchers in se- veral disciplines. This is reflected in the topics covered. These topics are: Calculations of temperatures, strains and stresses; Residual stresses and residual deformations; Mea- surements of residual strains and stresses; effects of de- fects and residual stresses on fracture and fatigue; effects of residual stresses on creep deformation; effects of resi- dual deformations and residual stresses on buckling.

Spis treści

Constitutive Modelling of Metals at High Temperatures.- Coupling Heat Transfer, Microstructure Evolution and Thermal Stress Analysis in Weld Mechanics.- Very High Homologous Temperature Constitutive Models for Semi-Solid and Solid Metals.- Transformation Plasticity (TRIP) under a Triaxial Stress State.- Research on Welding Stresses during Phase Transformation.- Modelling Phase Transformations for the Calculation of Internal Stresses During Fast Heating and Cooling in Steels.- The Analytical Method of Bainite Transformation Evaluation in Microalloyed Steels in the Process of Rapid Cooling.- Calculations of Temperatures, Strains and Stresses.- Thermal Problems of Welding.- Three-Dimensional Simulation of a Laser Surface Treatment through Steady State Computation in the Heat Source’s Comoving Frame.- Temperature Fields and Stress States in Welded Tubes of Rectangular Cross Section.- Residual Stresses and Residual Deformations.- The Characteristics of the Source of Welding Residual Stress (Inherent Strain) and its Application to Measurement and Prediction.- Residual Stress Distributions after Welding as a Consequence of the Combined Effect of Physical, Metallurgical and Mechanical Sources.- Measurements of Residual Strains and Stresses.- Measurement of Residual Stress Distributions Near the Toe of a Weld between a Bracket and a Plate Using the Crack Compliance Method.- The Neutron Strain Scanner: Measurements in Welds.- Effects of Defects and Residual Stresses on Fracture and Fatigue.- Effect of Weld Metal Mis-match on Toughness Requirements: Some Simple Analytical Considerations using the Engineering Treatment Model (ETM).- Compressive Strength of Structural Members with Undermatching Weld Joints.- Effect of Mechanical Heterogeneity on the Absorbed Energy of Welded Joint.- On the Correlation between Charpy Notch Toughness and Fracture Toughness of Base and Weld Metal.- Poster Session.- Three Dimensional Finite Element Modeling of Welded Structures.- Influence of Weldmatching on Mechanical Behaviours.- Combined Solid and Shell Element Modelling of Welding.- Mathematical Modelling of Molten Pool in Arc Welding.- Computation of Temperature Distribution due to Welding in Piping Systems.- Effects of Residual Stresses on Creep Deformation.- Design of Weldments in Structures Subjected to Creep.- Creep Behaviour of 304 Stainless Steel Welded Joints Composed of Two Different 308 Weld Metals.- Effects of Residual Deformations and Residual Stresses on Buckling.- The Influence of Welding Stresses and Distortions on the Stability of Shells of Revolution.- Influences of Welding Imperfections on Stiffness of Rectangular Plate under Thrust.- Influence of Residual Stresses and Deformation on Buckling Behaviour of Plates.- Harmonic Response of a Spot Welded Box Beam - Influence of Welding Residual Stresses and Deformations.