Publication detail

New Mathematical and Computational Model of Elastic Continuum Interaction with Liquid.

POCHYLÝ, F. MALENOVSKÝ, E.

Czech title

Nový matematický a výpočtový model interakce elastického tělesa s tekutinou

English title

New Mathematical and Computational Model of Elastic Continuum Interaction with Liquid.

Type

journal article - other

Language

en

Original abstract

This contribution is focused on the analysis if dynamic behavior of elastic continuum moving in liquid. The method solution is demonstrated on the non-stationary movement of a bar in a real, incompressible liquid. The principle of the solution is based on the modal transformation of the bar and discrete process using the finite element method. The problem is in general non-linear. However, the method introduced in this contribution allows the solution of the problem in time steps. The solution is based upon a certain substitution which provides gradual separation of the movement of liquid and the movement of the bar. This substitution is entered analogously on the finite element and is dependent on the normal coordinates. The result is a tensor of additional effects.

Czech abstract

Příspěvek je zaměřen na analýzu dynamických vlastností pružných těles, pohybujících se v tekutině. Metodika řešení je vysvětlena na popisu nestacionárního pohybu prutu v reálné, nestlačitelné kapalině.Princip řešení je založen na modální transformaci prutu a diskretizaci metodou konečných prvků.Problém je v obecnosti nelineární. Metoda v práci uvedená však umožňuje řešit problém v časových krocích. Řešení se opírá o jistou substituci, která umožní postupně oddělit pohyb kapaliny od pohybu prutu.Tato substituce se zavádí analogicky jako u tuhého tělesa na konečném prvku v závislosti na normálních souřadnicích. Výsledkem je tenzor přídavných účinků na konečném prvku.

English abstract

This contribution is focused on the analysis if dynamic behavior of elastic continuum moving in liquid. The method solution is demonstrated on the non-stationary movement of a bar in a real, incompressible liquid. The principle of the solution is based on the modal transformation of the bar and discrete process using the finite element method. The problem is in general non-linear. However, the method introduced in this contribution allows the solution of the problem in time steps. The solution is based upon a certain substitution which provides gradual separation of the movement of liquid and the movement of the bar. This substitution is entered analogously on the finite element and is dependent on the normal coordinates. The result is a tensor of additional effects.

Keywords in Czech

Volné tlumené kmitání, reálná tekutina, interakce tělesa s tekutinou

Keywords in English

free damped vibration, real liquid, interaction of continuum with liguid, finite element

RIV year

2008

Released

08.12.2008

Location

Brno

ISSN

1802-1484

Journal

Engineering Mechanics

Volume

15

Number

6

Pages from–to

411–418

Pages count

8

BIBTEX


@article{BUT47214,
  author="František {Pochylý} and Eduard {Malenovský},
  title="New Mathematical and Computational Model of Elastic Continuum Interaction with Liquid.",
  journal="Engineering Mechanics",
  year="2008",
  volume="15",
  number="6",
  month="December",
  pages="411--418",
  address="Brno",
  issn="1802-1484"
}