Dynamic properties of aircraft components at real constraints

The basic purpose of this article is consideration of the problems connected with the application of a method of concentrated weights in the tasks of mechanical system dynamics with non‐classic internal and external constraints. The method of concentrated weights is a convenient method to analyse t...

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Main Authors: Igor Pavelko, Vitalijs Pavelko
Format: Article
Language:English
Published: Vilnius Gediminas Technical University 2008-12-01
Series:Aviation
Subjects:
Online Access:https://journals.vgtu.lt/index.php/Aviation/article/view/6750
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spelling doaj-854b6733d56845049e293804f718dd7e2021-07-02T06:05:37ZengVilnius Gediminas Technical UniversityAviation1648-77881822-41802008-12-0112410.3846/1648-7788.2008.12.113-117Dynamic properties of aircraft components at real constraintsIgor Pavelko0Vitalijs Pavelko1Aviation Institute of Riga Technical University, 1B Lomonosova St., LV-1019, Riga, LatviaAviation Institute of Riga Technical University, 1B Lomonosova St., LV-1019, Riga, Latvia The basic purpose of this article is consideration of the problems connected with the application of a method of concentrated weights in the tasks of mechanical system dynamics with non‐classic internal and external constraints. The method of concentrated weights is a convenient method to analyse the dynamic properties of elastic mechanical systems. It has relative simplicity of definition of the parameters of the equivalent discrete system and clearness of computing algorithms and provides comprehensible accuracy of definition of the lowest natural frequencies. A doubtless advantage of the method is its convenience of modelling non‐classic constraints of fastening and internal constraints between elements of complex systems. Such problems arise when making decisions about the practice tasks of the analysis of the dynamics of real systems. The method is used for the analysis of vibrations of a beam with variable parameters at the presence of elastic supporting of the beam and attached additional concentrated weight. Santrauka Pagrindinis straipsnio tikslas – analizuoti atskiras problemas, susijusias su koncentruotų masių metodu mechaninių sistemų dinamikos uždaviniuose su neklasikiniais vidiniais ir išoriniais ryšiais. Koncentruotų masių metodu yra patogu analizuoti tamprių mechaninių sistemų dinamines savybes. Šio metodo savybės yra tokios: ekvivalentinės diskrečios sistemos parametrų paprastas nustatymas; aiškus skaičiavimo algoritmas; pakankamai tikslus laisvųjų virpesių žemo dažnio nustatymas. Modeliuojant neklasikinius vidinius ir išorinius elementų ryšius sudėtingoje mechaninėje sistemoje išryškėja neabejotini metodo privalumai. Tokios problemos iškyla analizuojant realias dinamines sistemas. Šių tyrimų metu metodas buvo panaudotas analizuoti sraigtasparnio sijos virpesius, kai kinta tampraus įtvirtinimo ir tampriai pritvirtintos koncentruotos masės parametrai. Reikšminiai žodžiai: orlaivio komponentai, dinamika, neklasikinis ryšys. First Published Online: 14 Oct 2010 https://journals.vgtu.lt/index.php/Aviation/article/view/6750aircraft componentdynamicsnon-classic constraint
collection DOAJ
language English
format Article
sources DOAJ
author Igor Pavelko
Vitalijs Pavelko
spellingShingle Igor Pavelko
Vitalijs Pavelko
Dynamic properties of aircraft components at real constraints
Aviation
aircraft component
dynamics
non-classic constraint
author_facet Igor Pavelko
Vitalijs Pavelko
author_sort Igor Pavelko
title Dynamic properties of aircraft components at real constraints
title_short Dynamic properties of aircraft components at real constraints
title_full Dynamic properties of aircraft components at real constraints
title_fullStr Dynamic properties of aircraft components at real constraints
title_full_unstemmed Dynamic properties of aircraft components at real constraints
title_sort dynamic properties of aircraft components at real constraints
publisher Vilnius Gediminas Technical University
series Aviation
issn 1648-7788
1822-4180
publishDate 2008-12-01
description The basic purpose of this article is consideration of the problems connected with the application of a method of concentrated weights in the tasks of mechanical system dynamics with non‐classic internal and external constraints. The method of concentrated weights is a convenient method to analyse the dynamic properties of elastic mechanical systems. It has relative simplicity of definition of the parameters of the equivalent discrete system and clearness of computing algorithms and provides comprehensible accuracy of definition of the lowest natural frequencies. A doubtless advantage of the method is its convenience of modelling non‐classic constraints of fastening and internal constraints between elements of complex systems. Such problems arise when making decisions about the practice tasks of the analysis of the dynamics of real systems. The method is used for the analysis of vibrations of a beam with variable parameters at the presence of elastic supporting of the beam and attached additional concentrated weight. Santrauka Pagrindinis straipsnio tikslas – analizuoti atskiras problemas, susijusias su koncentruotų masių metodu mechaninių sistemų dinamikos uždaviniuose su neklasikiniais vidiniais ir išoriniais ryšiais. Koncentruotų masių metodu yra patogu analizuoti tamprių mechaninių sistemų dinamines savybes. Šio metodo savybės yra tokios: ekvivalentinės diskrečios sistemos parametrų paprastas nustatymas; aiškus skaičiavimo algoritmas; pakankamai tikslus laisvųjų virpesių žemo dažnio nustatymas. Modeliuojant neklasikinius vidinius ir išorinius elementų ryšius sudėtingoje mechaninėje sistemoje išryškėja neabejotini metodo privalumai. Tokios problemos iškyla analizuojant realias dinamines sistemas. Šių tyrimų metu metodas buvo panaudotas analizuoti sraigtasparnio sijos virpesius, kai kinta tampraus įtvirtinimo ir tampriai pritvirtintos koncentruotos masės parametrai. Reikšminiai žodžiai: orlaivio komponentai, dinamika, neklasikinis ryšys. First Published Online: 14 Oct 2010
topic aircraft component
dynamics
non-classic constraint
url https://journals.vgtu.lt/index.php/Aviation/article/view/6750
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