Detail publikace
Lifetime calculation of soil-loaded non-pressure polymer pipes
PODUŠKA, J. HUTAŘ, P. FRANK, A. PINTER, G. NÁHLÍK, L.
Anglický název
Lifetime calculation of soil-loaded non-pressure polymer pipes
Typ
článek v časopise ve Scopus, Jsc
Jazyk
en
Originální abstrakt
Outstanding durability of plastic pressure and non-pressure pipes can cause difficulties, when a reasonable lifetime estimation is needed. It is impossible to prove the lifetime by testing, but there is a method of calculation that can provide a certain idea about the expected lifetime. The lifetime estimation is based on the assumption that the failure occurs as a result of the slow crack growth mechanism and it is calculated using the linear elastic fracture mechanics approach. Numerical simulations of crack growth in the pipe are necessary for this calculation. These simulations must consider various effects that can play a role in the lifetime. This paper deals with the lifetime calculations of a pressure and a non-pressure corrugated pipe considering the soil loads acting on pipes when they are buried. In the simulation of the pressure pipe, a combination of loads is applied that consists of internal pressure, residual stress and the soil loads. The influence of the loads is discussed. The non-pressure corrugated pipe is loaded by the soil loads only.
Anglický abstrakt
Outstanding durability of plastic pressure and non-pressure pipes can cause difficulties, when a reasonable lifetime estimation is needed. It is impossible to prove the lifetime by testing, but there is a method of calculation that can provide a certain idea about the expected lifetime. The lifetime estimation is based on the assumption that the failure occurs as a result of the slow crack growth mechanism and it is calculated using the linear elastic fracture mechanics approach. Numerical simulations of crack growth in the pipe are necessary for this calculation. These simulations must consider various effects that can play a role in the lifetime. This paper deals with the lifetime calculations of a pressure and a non-pressure corrugated pipe considering the soil loads acting on pipes when they are buried. In the simulation of the pressure pipe, a combination of loads is applied that consists of internal pressure, residual stress and the soil loads. The influence of the loads is discussed. The non-pressure corrugated pipe is loaded by the soil loads only.
Klíčová slova anglicky
Finite element simulation; Lifetime; Non-pressure pipe; Plastic pressure pipe; Slow crack growth; Soil load
Vydáno
02.12.2019
Nakladatel
Trans Tech Publications Ltd
Místo
Switzerland
ISSN
1013-9826
Ročník
827
Číslo
2020
Strany od–do
141–146
Počet stran
6
BIBTEX
@article{BUT177243,
author="Jan {Poduška} and Pavel {Hutař} and Andreas {Frank} and Gerald {Pinter} and Luboš {Náhlík},
title="Lifetime calculation of soil-loaded non-pressure polymer pipes",
year="2019",
volume="827",
number="2020",
month="December",
pages="141--146",
publisher="Trans Tech Publications Ltd",
address="Switzerland",
issn="1013-9826"
}