Lifetime Calculation of Soil-Loaded Non-Pressure Polymer Pipes
| Autor: | Andreas Frank, Luboš Náhlík, Jan Poduška, Gerald Pinter, Pavel Hutař |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Imagination Thesaurus (information retrieval) Materials science Chemical substance Mechanical Engineering media_common.quotation_subject Mechanical engineering 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Finite element simulation Search engine chemistry Mechanics of Materials General Materials Science 0210 nano-technology Science technology and society media_common |
| Zdroj: | Key Engineering Materials. 827:141-146 |
| ISSN: | 1662-9795 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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