Analysis of Euler beam and bar as negative stiffness mechanism in vibrating structures | Zendy

Akintoye O. Oyelade | Zendy; O. M. Sadiq | Zendy

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Analysis of Euler beam and bar as negative stiffness mechanism in vibrating structures

Author(s) -

Akintoye O. 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.

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