Simulation of the Rib rolling — surface shot peening technological sequence of the reinforced panels

Large-sized (up to 30 m long) monolithic-milled contour-forming panels with a complex spatial shape are among the most difficult aircraft parts in their manufacture. An efficient method in shaping such panels is the sequential shot peening of their outer surface and the stiffness rib rolling. The existing methods for determining processing modes of such a technological sequence are based on the experimental work on samples, and appear to be labor-intensive and costly. The paper presents design and technological features of the monolithic-milled aircraft panels and technologies for their shaping, applied by the domestic and foreign enterprises. It describes an improved technique for computing the rib rolling process parameters based on the sequential finite element simulation of the part machining. The technique is designed for preparing the CNC equipment control programs. The paper provides prerequisites required in implementation of the developed technology at the industry enterprises, which would increase their productivity.
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