The hydraulic networks under pressure are often subjected to crack defects of semi-elliptical external or internal notches. A numerical study carried out herein is focused on lines bearing defects of semi-elliptic U-shaped notches with a defect-ratio , thickness varying from 0.1 to 0.5 under pressure from 20 to 60 bars. This study allows us to determinate the distribution of stresses in the vicinity of the defect. The objective of this work is to analyze, using the finite element method, the elasto-plastic stress distribution at the bottom of the fault notch to determine the stress and the effective stress intensity factor in mode I by the volumetric method in a bi-logarithmic graph. This study highlights that the stress intensity factor is influenced by crack size, bearing and the temperature of the pipe wall. The results obtained are compared to those given by the Irwin model. This makes it possible to judge the relevance of the method used.

hydraulic line, notch parameters, crack defects, volumetric method, finite elements method.

Received: June 9, 2022; Revised: August 8, 2022; Accepted: August 12, 2022; Published: September 30, 2022

How to cite this article: Abouerraja Lahcen, Hassan Samri, Kamal Gueraoui and Bennasser Bahrar, Influence of notch parameters on a hydraulic pressure line, JP Journal of Heat and Mass Transfer 29 (2022), 35-46. http://dx.doi.org/10.17654/0973576322042

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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