Improvement of technologies for the production of roll-formed profiles and sheet products for the aviation industry

Currently, many manufacturing techniques used in the aircraft industry parts are imperfect and lead to an increase in the cost of both the product and the aircraft as a whole. Therefore, the improvement of technologies is an urgent and necessary task at the present time. JSC «Ulyanovsk NIAT» has long been engaged in the development of technologies used in the aviation industry. Production of new aircraft MS-21, Il-112 and Superjet 100 requires the use of the most advanced methods of metal processing. The article studies the development of technologies for manufacturing profiles for the fuselage of the aircraft MS-21 and Superjet-100, obtaining details of double curvature by modeling in the CAE program of dynamic modeling LS-DYNA. Studies have allowed to determine the possibility and technological conditions for the manufacture of profiles such as stringer and frame with longitudinal curvature. The conducted practical tests confirm the results of modeling, which allows more reliable attitude to the obtained results.