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In this paper, the calculation of the beam system is carried out using the computer program of engineering analysis Femap. The solution of the problem of determining the strength characteristics of a beam structure using the method of initial parameters and the method of finite elements is considered. The results of calculations obtained in the course of computer modeling are compared with the results obtained by well-known standard methods, the error is found and the computer model is refined. A way to refine the model by correctly setting the moment of inertia is demonstrated. Good convergence of the calculation results is shown.
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