Multithreaded Integrated Design of Aiframe Panel Manufacture Processes

Abstract

The paper describes the basic features of the developed computer-aided system of design, modeling, and electronic simulation of integral panel manufacturing. Results of system application for three-dimensional stress analysis computations and simulations of panel shaping under various thermomechanical and speed conditions are demonstrated. As is seen from computations, obtaining these solutions without parallelization can last for weeks; therefore, urgent problems can be hardly solved. These computations can be accelerated by using parallelization algorithms. In modern operational systems, the execution thread capability of generating another thread allows building multithreaded programs of recursively called subroutines, recursive calla being substituted by creation of a thread. Based on these activities, a computer-aided design system was designed for manufacturing structural panel elements with complex curvature and engraving. Application of the system for intricate manufacturing processes (blank and die tooling for shaping purposes based on material creeping) assists in eliminating the reject symptoms for wing panels of modern aircraft, considerably reduces the production costs, and improves the product quality.

This work was partly supported by the Russian Foundation for Basic Research (project No. 07-01-00747), by the Russian Ministry for Education and Science (project No. 2.1.1/1686), and by the Komsomolsk-na-Amure Aircraft-Production Association named after Yu. Gagarin (JSC KNAAPO of JSC Sukhoi Design Bureau), which has approved the publication of these results.