Surface strengthening deformation control method, system and device for thin-wall complex curved surface part

Abstract

The invention discloses a surface strengthening deformation control method, system and device for a thin-wall complex curved surface part, and relates to the technical field of surface strengthening process.The method comprises the steps that the thin-wall complex curved surface part is divided into a plurality of machining areas; processing each processing area by adopting different surface strengthening process parameters; constructing a prediction model from process parameters to residual stress distribution through a finite element simulation technology by predicting residual stress distribution and part deformation effects of different areas; based on the residual stress distribution, constructing a prediction model from the residual stress distribution to the part deformation through a finite element simulation technology; fitting a finite element simulation result by using an RBF neural network, and constructing a prediction model from process parameters to part deformation; with minimization of part deformation as a target, partition machining process parameters are optimized, and control over part deformation is achieved; according to the method, the deformation of the part can be accurately controlled through partition machining and multi-stage prediction optimization model, and the machining precision is improved.

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