Structure of almost every modern flying vehicle contains many threaded joints (from a small electronic unit to the entire spacecraft), which number could reach several thousands. Within the design, it becomes naturally required to estimate strength of several design options. In computing the strength of structures containing the threaded joints, significant time is spent on preparing a computation model and simulating the threaded joints themselves. Methodology considered in the paper and the created efficient algorithm implemented in the MSC Patran software package utility are making it possible to increase efficiency of the strength computation. Besides, it reduces the time in preparing the finite element models for the bolted and screw joints, as well as in computing, as part of design and development by several times, which is confirmed by the considered example. Thus, introduction of automating the process of the threaded joints simulation makes it possible to consider a wider number of design options within the limited design time, which becomes important in minimizing weights of the rocket and space technology products.

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