open thin-walled cylindrical shell, natural vibrations, attached mass.

The paper presents a refined mathematical model of forced oscillations of an open shell with a small attached mass at a hinge support. Hinge support is considered as the most frequently used. The equations are composed in a linear formulation, solved by asymptotic methods, using Pade approximations. Experimental studies were carried out, a test stand and samples were made for this purpose, and a program of experiments was developed. Comparison of theoretical and experimental data it is less than 5%, which indicates a high reliability of the refined mathematical model. The obtained dependences of the shell oscillation frequency and the wave formation parameter make it possible to calculate the open-ended thin-walled cylindrical shells with a wave formation parameter greater than 0.3, when designing such structures

Dobryshkin Artem Yurjevich, Senior Lecturer, Komsomolsk-on-Amur of State University, Komsomolsk-on-Amur, Russia.

Sysoev Oleg Evgenyevich, Doctor of Engineering, Professor, Dean, Komsomolsk-on-Amur of State University, Komsomolsk-on-Amur, Russia.

Sysoev Evgeniy Olegovich, Candidate of economic Sciences, Associate Professor, Komsomolsk-onAmur of State University, Komsomolsk-on-Amur, Russia.

Lin Thet, Post-graduate student, Komsomolsk-on-Amur of State University, Komsomolsk-onAmur, Russia.