Tytuł artykułu
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Identyfikatory
Warianty tytułu
Research of pipelines elements behaviour subjected to different loading conditions
Konferencja
Modelowanie w mechanice/Sympozjum [XLIV; 2005; Gliwice; Polska]
Języki publikacji
Abstrakty
W pracy przedstawiono przegląd numerycznych modeli fragmentów instalacji rurociągowych z dorobku autorów w kontekście oceny zastosowanych metod do szacowania stanu technicznego rurociagów i instalacji rurociągowych. Zaprezentowano modelowanie rurociągu przebiegającego w niestabilnym gruncie na podstawie hipotetycznych załozeń i na podstawie danych z rzeczywistej awarii o podobnym charakterze. Przeanalizowano także zachowanie się elementu rurociągu, w którym następuje eksplozja na skutek detonacji materiału wybuchowego.
In the first part of this paper authors consider to present their achievements in pipelines research using numerical methods. Ground movements and corrosion causing wall thickness loss are the ones of most important causes deciding about technical condition of pipelines. In the paper, the stress state arisen around a simulated corrosion metal loss (corrosion pit) placed in the area where the pipeline has lost contact with the ground floor. In the second one, the FE method of numerical model building of pipeline fragment with dents is proposed. In this case were analysed huge geometric deformations of a pipe that were indicated by inspection intelligent tool (so called "geo-pig). The base problem is to establish proper boundary conditions especially for non-linear calculations when the history of damages origination is not known. In the second part dynamic response of a pipeline subjected to the shock wave produced by the detonation of high explosive (HE) materials is presented. LS-DYNA, a 3D explicit finite element computer code was used to study this behavior. Coupled Euler and Lagrange formulation are used in the finite element analysis of such problems to accurately represent the detonation phenomenon. A steel pipe developed using shell elements in Lagrangean formulation was submerged within the air domain model. The non-linear material model, which was used to describe the pipeline, also included the strain rate effects and failure criterion. In the first part of this paper authors consider to present their achievements in pipelines research strain rate effects and failure criterion.
Rocznik
Tom
Strony
321--326
Opis fizyczny
Bibliogr. 4 poz.
Twórcy
autor
- Wydział Mechaniczny Wojskowa Akademia Techniczna, 00-908 Warszawa, ul. Gen. Sylwestra Kaliskiego 2
autor
autor
Bibliografia
- [1] Blyukher B., Niezgoda Т., Szymczyk W., Małachowski J. (2003), Computer simulation of pipeline deformations on the basis of data from an intelligent caliper inspection tool, Computer Technology and Applications, ASME 2003, PVP-Vol. 458, pp. 309-312.
- [2] Pipetronix Ltd., Ultrascan - final report (sample report), Karlsruhe, February 1995.
- [3] Al-Abed M. R., Baniotopoulos C.C. and Panagiotopoulos P.D. (1997), Saddle-supported pipelines: computation of the pressure distribution on the pipe-saddle Interface, J. Construct. Steel Res., Vol. 44, Nos. 1-2, pp. 159-178.
- [4] Morka A., Kwasniewski L. and Wekezer J. (2003), Analysis of a bus structure under explosion loading, Design and Analysis of Protective Structures Against Impact/Impulsive/Shock Loads, December 16-18.2003, Tokyo, Japan, pp.147-158.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL9-0043-0044