An optimal form of the finite element mass matrix in the analysis of longitudinal vibrations of rods - Publikacja - MOST Wiedzy

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An optimal form of the finite element mass matrix in the analysis of longitudinal vibrations of rods

Abstrakt

In this paper, an attempt is made to find the optimal form of the mass matrix of a rod finite element, which allows one to obtain the smallest errors in the longitudinal frequency determination of natural vibrations of any boundary conditions within the whole range of determined frequencies. It is assumed that the mass matrix can be treated as a linear combination of the consistent and diagonal matrices. Based on analytical considerations, the optimal values of certain weights for creating a linear combination of the mentioned matrices have been determined. As a result, a mass matrix has been obtained which allows the determination of natural frequencies with the smallest mean error within the possible spectrum of frequencies. It is also shown that the value of the weight coefficient changes depending on the number of natural frequencies within the spectrum one wants to determine.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
FINITE ELEMENTS IN ANALYSIS AND DESIGN nr 207,
ISSN: 0168-874X
Język:
angielski
Rok wydania:
2022
Opis bibliograficzny:
Palacz M., Krawczuk M.: An optimal form of the finite element mass matrix in the analysis of longitudinal vibrations of rods// FINITE ELEMENTS IN ANALYSIS AND DESIGN -Vol. 207, (2022), s.103763-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.finel.2022.103763
Źródła finansowania:
  • Publikacja bezkosztowa
Weryfikacja:
Politechnika Gdańska

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