Resonance of a rotary machine support beam considering geometric stiffness
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Federal University of Bahia (UFBA), Polytechnic School, Department of Construction and Structures, Salvador, Brazil
University of São Paulo (USP), Polytechnic School, Department of Structural and Geotechnical Engineering, São Paulo, Brazil
Federal University of Technology of Parana (UTFPR), Department of Electronics, Ponta Grossa, Brazil
Alexandre de Macêdo Wahrhaftig   

Polytechnic School, Department of Construction and Structures, Federal University of Bahia (UFBA), Rua Aristides Novís, Nº 02, 5º andar, Federação, 40210-910, Salvador – BA, Brazil
Submission date: 2020-02-02
Acceptance date: 2020-04-20
Online publication date: 2020-10-15
Publication date: 2020-10-15
Journal of Theoretical and Applied Mechanics 2020;58(4):1023–1035
The effects of axial compressive forces on free vibration frequencies of rotating machine support beams are investigated taking into account their geometric stiffness. One class of structures that has economic and strategic importance is the base of machines, which is excited by vibrations induced by the supported equipment. These vibrations can affect the structures or, more generally, may generate damage to the supported equipment and the quality of production. They may also render human working conditions difficult. In the current work, these effects are studied via mathematical modeling, numerical simulation and experimental evaluation.
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