Simulation study of machining deformation under different machining strategies of 7055 aluminum plate

In this research, the finite element approach was used to investigate the influence of machining type and machining sequence on the machining deformation of a 7055 aluminum alloy thick plate with an initial residual stress condition. The results reveal that the frame-first machining type produces much less machining distortion than the layer-first machining type. The machining distortion of the thick plate with the end-first connection with the frame-first machining sequence is the smallest. By developing an appropriate machining strategy, the machining distortion of the thick plate may be successfully decreased.