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The paper describes the methodology of contact problem solving that is used in specialized software code aimed at simulation of aircraft assembly process. For considered class of problems it is possible to radically reduce the number of unknowns without loss of accuracy. The results of validation of developed code against physical experiments and commercial FEM codes are also given.

The presented paper describes the software complex developed in St. Petersburg Polytechnical University for AIRBUS aimed at simulation of aircraft assembly process. Previous version of this complex was described in [1].

Novator's patented orbital drilling technology is now well known for its ability to drill holes with high quality and finish in a single operation. By using orbital drilling, the need to disassemble the parts in order to remove the burrs is eliminated. A fully implemented orbital drilling process makes it possible to reduce the drilling time by 50%. Dry drilling makes coolant obsolete and reduces environmental hazards. To exploit the advantages of orbital drilling, Airbus started a project with Novator a few years ago in order to develop a Portable Orbital Drilling Unit to be used in the final assembly lines in Toulouse and Hamburg. This lightweight, portable system, called Twinspin PX3, is a CNC controlled unit allowing for a continuous radial offset adjustment of the cutting tool. Based on this innovative process, it makes it possible to produce not only cylindrical holes but also conical holes or more complex shaped holes.