Open AccessAnalysis of Euler beam and bar as negative stiffness mechanism in vibrating structures
Author(s) -
Akintoye Olumide Oyelade,
O. M. Sadiq
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/640/1/012111
Subject(s) - stiffness , mechanism (biology) , bar (unit) , structural engineering , spring (device) , beam (structure) , isolator , vibration , displacement (psychology) , damper , bending stiffness , vibration isolation , euler's formula , mechanics , physics , engineering , mathematics , acoustics , mathematical analysis , psychology , quantum mechanics , electronic engineering , meteorology , psychotherapist
Presented here is a new mechanism based on a combination of a bar and Euler beam to illicit negative stiffness in structures. The proposed mechanism consists of an inclined bar, a horizontal Euler beam. The characteristics of the negative stiffness model is presented, and its dynamic features in combination with a vertical spring and damper is investigated under displacement vibration. It was discovered that the design of the mechanical isolator provided a better performance at zero dynamic stiffness during vibration than that of the linear isolator. The proposed mechanism can provide an alternative means of generating negative stiffness within structures.