Timoshenko beam

Problem statement. Given the prospects of discrete-continuous high-frequency vibration machines, there is a need to accurately assess the energy efficiency of such equipment. Since dissipation is an integral part of the dynamic processes in oscillating systems, it is important to develop a methodology that adequately accounts for energy losses during oscillation of continuous sections. Purpose. It consists of creating a mathematical model that carefully considers dissipative processes occurring in continuum sections. Methodology.

This study aims to predict the sound transmission properties of composite layered plates structures in the lower frequency range. In present paper a novel procedure to derive the sound isolation parameters for layered plates is under discussion. This paper presents a new stress analysis method for the accurate determination of the detailed stress distributions in laminated plates subjected to cylindrical bending. Some approximate methods for the stress state predictions for laminated plates are presented here.