The Influence of Preload on Modal Parameters of a Cantilever Beam

Peter Pavelka^1, , Róbert Huňady¹ and Martin Hagara¹

¹Department of Applied Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering, Letná 9, 042 00 Košice, Slovakia

Cite this paper:
Peter Pavelka, Róbert Huňady and Martin Hagara. The Influence of Preload on Modal Parameters of a Cantilever Beam. American Journal of Mechanical Engineering. 2016; 4(7):418-422. doi: 10.12691/ajme-4-7-34

Abstract

The paper is focused on a determination of dynamic characteristics of a cantilever beam with a free end and dynamics characteristics of the same beam when the free end is pushed down by using a rubber string. This leads to bend of the beam and causes its preloading. The modal parameters are determined by experimental modal analysis and the results of the tests with and without preload are compared each other. The numerical simulation of non-loaded beam is the part of the study.

Keywords:
modal parameters cantilever beam preload

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