The use of fixed points in experimental research of the internal friction of material
| Autor: | Pavel O. Platnov, Vladimir B. Zylev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
logarithmic decrement of oscillations
Work (thermodynamics) Inertial frame of reference Logarithmic decrement Mechanics Fixed point Finite element method determination of fixed points by finite element method minimization of energy losses in support fastenings lcsh:Architectural engineering. Structural engineering of buildings Experimental system frequency independence of inertial friction lcsh:TH845-895 Pure bending laboratory experimental model Independence (probability theory) Mathematics experimental determination of internal friction in a material |
| Zdroj: | Structural Mechanics of Engineering Constructions and Buildings, Vol 15, Iss 5, Pp 399-404 (2019) |
| ISSN: | 2587-8700 1815-5235 |
| Popis: | The aim of the work. The work is devoted to experimental research of internal friction parameters of the material. Methods. The research of internal friction is carried out by consideration of damped oscillations of the experimental system that consist of rigid plates and a specimen in a state of pure bending. We propose to locate bearings in the fixed points to minimize energy losses in support fastenings. Fixed points are determined by using a finite element complex with consideration of free oscillations of the loose model. Results. Damping curves were determined, which demonstrate a very small logarithmic decrement of oscillations and frequency independence of inertial friction. The main result of the work is the tested improvements of the experimental technique, among which the main one is the use of fixed points for determining the places of fastening of the laboratory installation |
| Databáze: | OpenAIRE |
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