A workpiece initial residual stress backstepping adjustment method

The invention discloses a workpiece initial residual stress backstepping adjustment method, and belongs to the field of mechanical engineering. The method comprises the following steps: firstly, dividing two identical workpieces into an experiment group A and a measurement group B, carrying out heat treatment, and removing materials from the workpieces in the group A; and measuring the stress of each layer of the group B workpiece by using a stripping method. Secondly, constructing a nonlinear relationship by using a support vector machine algorithm; and finally, adjusting the initial residualstress by using a genetic algorithm, and taking the stress data of the individual with the maximum fitness as final adjustment data. According to the invention, the thought of adjusting the initial residual stress of the workpiece through a support vector machine algorithm and a genetic algorithm is adopted, so that the problem of inaccurate simulation prediction result caused by limited measurement technology is solved;