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PROCESS ANALYSIS AND SYNTHESIS OF LASER FORMING OF VARYING THICKNESS PLATE

In order to apply laser forming (LF) process to complex structures such as compressor airfoils that are 3D geometries with large thickness variation, the analysis and process synthesis of LF varying thickness plate are conducted in this paper. In this paper, the bending mechanism and parametric effect on the deformation characteristics of varying thickness plate are investigated. An analytical model was proposed to predict the bending deformation. A strategy of LF process synthesis of varying thickness plate is also presented. The heating paths are determined by weighted aver-aging the in-plane strain and bending strain. A thickness-dependent database is established to determine the heating conditions. The analysis and the synthesis are validated by numerical simulation and experiments.