Development Of Analytical And Empirical Systems For Parametric Studies Of Design And Fabrication Of Welded Structures

Scientific and Technical Aerospace Reports

Development of Analytical and Empirical Systems for Parametric Studies of Design and Fabrication of Welded Structures

Part I of the report covers the development of a monograph entitled 'Analysis of Design and Fabrication of Welded Structures.' The monograph deals with the prediction of stresses, strains and other effects produced by welding. Part II covers the development of analytical means for predicting and controlling weld distortion in welded aluminum structures. Distortion in welded structures is caused by three fundamental dimensional changes, namely transverse shrinkage, longitudinal shrinkage and angular change. During the fabrication of actual structures, such as ships, airplanes and buildings which have various types of joints, these dimensional changes are combined. Therefore, shrinkage distortion that occurs in structures can be extremely complex. After a brief introduction, Section 2.2 discusses thermal stresses during welding, residual stresses and distortion in a general manner. The subsequent sections up to Section 2. 6 discuss the analytical and experimental investigations carried out at M.I.T. on the prediction of various fundamental types of distortion. Finally, Section 2. 7 deals with methods of distortion reduction, as they were tested by various investigators at M.I.T. (Author).

Progress Reports - Welding Research Council