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Nonlinear stiffness characterization for applications on vibration isolation

Grant number: 17/21221-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): December 01, 2017
Effective date (End): November 30, 2018
Field of knowledge:Engineering - Mechanical Engineering - Mechanics of Solids
Principal researcher:Paulo José Paupitz Gonçalves
Grantee:Fernanda Azevedo de Oliveira
Home Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

This project proposes the study of a mechanical structure with its geometry characterized by a curve in piriform format. When the thinner part of the structure is clamped and a compression load is applied at the opposite end, the deformation may exhibit nonlinear behavior. In general the system nonlinear stiffness can be approximated to a third order polynomial. This type of systems are used in applications such as vibration isolation, for instance. In this context, this project proposes a study on the behavior of such system using the finite element method. Simplified experimental tests are proposed to support numerical simulations. (AU)

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