Spectral density of the bridge beam response with uncertain parameters under a random train of moving forces

Gładysz, M.; Śniady, P.

Artykuł - szczegóły

Tytuł artykułu

Spectral density of the bridge beam response with uncertain parameters under a random train of moving forces

Autorzy

Gładysz M. , Śniady P.

Wybrane pełne teksty z tego czasopisma

http://www.springer.com/journal/43452

Identyfikatory

Warianty tytułu

Gęstość widmowa drgań belki mostowej o niepewnych parametrach poddanej działaniu losowej serii sił ruchomych

Języki publikacji

Abstrakty

The paper presents the spectral analysis of the beam’s vibration with uncertain parameters under a random train of moving forces which forms a filtered Poisson process. It is assumed that natural frequencies of the bridge beam are uncertain and are modelled by fuzzy numbers, random variables or fuzzy random variables. In order to obtain general solutions for the spectral density function of the beam’s response the normal mode dynamic influence function has been introduced. As an example the spectral density functions of a bridge modelled as a simple supported beam are determined.

W pracy zaprezentowano analizę widmową drgań belki o niepewnych parametrach, poddanej działaniu losowej serii ruchomych sił. Siły te tworzą proces Poissona. W analizie przyjęto, że niepewność wielkości częstości własnych można uwzględnić, uznając je za liczby rozmyte, zmienne losowe lub rozmyte zmienne losowe. Wprowadzono dynamiczną funkcję wpływu o charakterze losowo-rozmytym, dzięki której można otrzymać wygodne dla dalszych rozważań i obliczeń numerycznych związki, które określają funkcję gęstości widmowej drgań belki.

Słowa kluczowe

vibration random moving forces Poisson process spectral analysis uncertain parameters

wibracje proces Poissona analiza spektralna

Wydawca

Springer
Wrocław University of Science and Technology

Czasopismo

Archives of Civil and Mechanical Engineering

Rocznik

2009

Tom

Vol. 9, no 3

Strony

31--47

Opis fizyczny

Bibliogr. 35 poz., wykr.

Twórcy

autor

Gładysz M.

autor

Śniady P.

Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BPZ5-0006-0003