UK Research Programme on Residual Stresses - Review of Progress

摘要

Finite element analysis is being increasingly used to determine the magnitude of residual stresses in welded components. However, there is little guidance available on the accuracy of approaches, especially where simplifications have to be made because of the longevity associated with carrying out 3D finite element analysis. Similarly, experimental methods for characterising residual stresses have their limitations. However, when the two approaches are combined and the results corroborate then the resulting stresses can be confidently used for assessment. A long term UK research programme aims to develop improved guidance on residual stress modelling techniques which will be incorporated into the R6 fracture assessment procedure.