This article presents an analytical and engineering justification for the use of flat elastic elements in eccentric-pendulum-type resonant vibration tables. The study addresses the design, calculation, and structural optimization of resonant elastic nodes, which ensure directional oscillations, define dynamic performance, and determine the durability and reliability of the machine. Stiffness and strength calculation procedures are derived for elastic components of rectangular and circular cross-sections, considering material properties, geometric parameters, and stress constraints under cyclic loading. Analytical results indicate that circular elements experience higher bending stresses than rectangular ones for equivalent stiffness, requiring increased length to achieve comparable durability. Finite-element simulations validate these findings, confirming the superior structural efficiency, lower operating stresses, and enhanced geometric adaptability of flat elements. The research provides a rigorous basis for selecting flat elastic components in the design of high-performance resonant vibration systems.
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