Abstract
In order to investigate the influence of welding residual stress on load-carrying-capacity of patch plate joints under the compressive loading, a series of experiment and analysis was carried out. The temperature history and stress distribution of welding and post-weld heat treatment processes were accurately simulated by the thermal elastic plastic analysis. The characteristics of welding residual stress distribution of patch plate joints were shown. The compressive residual stress generated in the base plate reduced the yielding load of joint under the compressive load. To this problem, the effectiveness of residual stress reduction by post-weld heat treatment was confirmed.
