The integrally-stiffened panel, especially high stiffened integral panel, is commonly used in the aerospace industry due to its high structural efficiency, obvious weight loss benefits and good sealing effect. Stress peen forming is an effective process to induce curvatures in large-medium, long-life, high-performance complex integrally-stiffened panel. Numerical simulation is a promising approach that promotes the investigation, development and application in stress peen forming of integrally-stiffened panel. In order to simulate the stress peen forming of integrally-stiffened panel, a multi-shot impact finite element model based on response surface function, an reverse bending stress field simulation model based on strain neutral layer shifting to inner compression region and a stress peen forming RBF neural network prediction model are established. By applying these three models, the numerical simulation of stress field method, the high-precision numerical simulation and deformation prediction of stress peen forming for integrally-stiffened panel are realized. The present study provides a more convenient, efficient and economical way for the research and application of the stress peen forming process for integrally-stiffened panel.
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