Publication detail
Point load effect determination for different pressure pipe SDR series
MAJER, Z. ŠEVČÍK, M. NÁHLÍK, L. HUTAŘ, P.
Czech title
Stanovení vlivu vnějšího bodového zatížení u tlakových trubek
English title
Point load effect determination for different pressure pipe SDR series
Type
conference paper
Language
en
Original abstract
In the paper the polymer pipes loaded by internal pressure with additional point load on the external surface are studied using numerical methods. It is shown that the additional external loading can significantly influence residual lifetime of the pressured pipe. In this study the effect of the pipe geometry is considered. The shape of the propagating crack is estimated based on a special algorithm and the stress intensity factor is evaluated by direct method. The relation between crack size and a geometric function Y(a-s) for specific material and geometrical properties is found. The results of this paper should contribute to better understanding of the real pipe behavior and to prevent unexpected failure of the pressured pipe system due to non-homogenous distribution of the soil load.
Czech abstract
V článku je popsán vliv přídavného vnějšího zatížení na tlakovanou trubku použitím numerických metod. Je zde ukázáno, že toto vnější zatížení výrazně ovlivňuje zbytkovou životnost. Je vytvořen 3D model a pomocí speciálně navrženého algoritmu je popsán eliptický tvar čela trhliny. Výsledkem jsou porovnání velikosti trhliny s tvarovou funkcí Y(a-s) pro konkrétní materiál trubky a její geometrii.
English abstract
In the paper the polymer pipes loaded by internal pressure with additional point load on the external surface are studied using numerical methods. It is shown that the additional external loading can significantly influence residual lifetime of the pressured pipe. In this study the effect of the pipe geometry is considered. The shape of the propagating crack is estimated based on a special algorithm and the stress intensity factor is evaluated by direct method. The relation between crack size and a geometric function Y(a-s) for specific material and geometrical properties is found. The results of this paper should contribute to better understanding of the real pipe behavior and to prevent unexpected failure of the pressured pipe system due to non-homogenous distribution of the soil load.
Keywords in Czech
ploymerní tlakované trubky, metoda konečných prvků, součinitel intenzity napětí, odhad životnosti
Keywords in English
polymer pressure pipes, point load, FEM, stress intensity factor, lifetime prediction
RIV year
2015
Released
05.01.2015
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-03835-235-8
ISSN
1013-9826
Book
Advances in Fracture and Damage Mechanics XIII
Volume
627
Number
1
Pages from–to
373–376
Pages count
4
BIBTEX
@inproceedings{BUT109056,
author="Zdeněk {Majer} and Martin {Ševčík} and Luboš {Náhlík} and Pavel {Hutař},
title="Point load effect determination for different pressure pipe SDR series",
booktitle="Advances in Fracture and Damage Mechanics XIII",
year="2015",
volume="627",
number="1",
month="January",
pages="373--376",
publisher="Trans Tech Publications",
address="Switzerland",
isbn="978-3-03835-235-8",
issn="1013-9826"
}