Increasing Damping of Thin-Walled Structures Using Additively Manufactured Vibration Eliminators.

The paper presents a new way to conduct passive elimination of vibrations consisting of covering elements of structures with low dynamic stiffness with polylactide (PLA). The PLA cover was created in 3D printing technology. The PLA cover was connected with the structure by means of a press connection.

Finite Element Modeling of the Dynamic Properties of Composite Steel-Polymer Concrete Beams.

This paper presents a method for modeling the dynamic properties of steel-polymer concrete beams, the basic structural components of machine tools, assembly lines, vibratory machines, and other structures subjected to time-varying loads during operation. The presented method of modeling steel-polymer concrete beams was developed using the finite element method. Three models of beams differing in cross-sectional dimensions showed high agreement with experimental data: relative error in the case of natural frequencies did not exceed 5% (2.