Pressure pipe damage: Numerical estimation of point load effect

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00485029" target="_blank" >RIV/68081723:_____/13:00485029 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.525-526.177" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.525-526.177</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.525-526.177" target="_blank" >10.4028/www.scientific.net/KEM.525-526.177</a>

Result language

angličtina

Original language name

Pressure pipe damage: Numerical estimation of point load effect

Original language description

The most relevant loading conditions for real polymer pipe systems are not only internal pressure, but also loading caused by sand embedding including bending or different kinds of point loads. It has been shown that service lifetime of buried pipes can be reduced especially due to stress concentration caused by external point loads. If the pipe is loaded locally the stress is concentrated here and a crack can initiate at this position or the existing crack can be affected by corresponding stress redistribution. In the paper the effect of the hard indenter, Poisson's ratio, hoop stress level and pipe wall thickness on the crack shape was estimated using numerical simulations of the creep crack propagation based on finite element method. Relation between crack length and crack width was found and expressed by simple relationship. A deeper understanding of the point load effect in order to prevent unexpected failure of the pipelines is of paramount importance for pipeline design.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Advances in Fracture and Damage Mechanics XI

ISBN

978-3-03785-463-1

ISSN

1013-9826

e-ISSN

—

Number of pages

4

Pages from-to

"Roč. 525"-"526 (2013)"

Publisher name

Trans Tech Publications

Place of publication

Zurich

Event location

Xian

Event date

Sep 12, 2012

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000315543300045