Estimation of residual strength of pipeline's elbow with volumetric corrosion defect, which is developing
Journal Title: Праці Одеського політехнічного університету - Year 2017, Vol 3, Issue 53
Abstract
Pipelines are used as one of the most practical and low cost methods for transmission of different liquid petroleum products and gases. Damage on the pipeline is capable to appear during operation due to the accumulation of fatigue and arising of corrosion. The Aim is estimation the residual strength of pipeline's elbow with volumetric surface defect development of which is modeled in time. Deformed state assessment of damaged elbow of pipelines was held in the framework of computer modeling by using finite-element method (FEM). Corrosion damage modeled explicitly as volumetric defect on the outside of the knee pipeline. Based on the results of the study the assessment of the residual strength of pipeline with increasing surface defects in operation from 10 to 45 years has been obtained. Besides, the areas in which there is localization of maximum equivalent stresses and respectively plastic deformation depending on the size of damage were defined. By obtained results may be noted that after 37 years of operation the pipelines with the corresponding defect on surface cannot withstand the maximum load.
Authors and Affiliations
O. O. Larin, K. E. Potopalska
Keywords
Related Articles
- EP ID EP311551
- DOI 10.15276/opu.3.53.2017.02
- Views 181
- Downloads 0
Use of genetic algorithm as a solution of unidimensional cutting rationalization problem
The following research is dedicated to studying an example of a solution of unidimension cutting rationalization problem. The possibility to use the elements of GA (genetic algorithm) theory at its determination is shown...
Surface hardening of steel parts
Development of new resource-saving and cost-effective technologies of combined hardening of steel parts with a significant reduction of the process duration is an important and urgent task. Aim: The aim of the work is to...
The problem of stress resistance in human resource management
The problem of accounting and management of the human factor for ensuring the reliability, safety and viability of complex dynamic systems managed by a person under stressful conditions of activity is considered. Taking...
Development and justification of fuel efficiency for subcritical installation driven by electron accelerator
The variants of design and technological features of manufacturing of fuel assemblies for the subcritical nuclear installation “Neutron Source” controlled by an electron accelerator, with rod-type fuel elements are prese...
The properties of time-frequency localization of basis functions used in OFTDM communication systems
This article investigates the properties of time-frequency localization (TFL) of various basis functions, such as rectangular function, the function of half cosine, isotropic orthogonal transform algorithm (IOTA) functio...