THERMAL SCIENCE

International Scientific Journal

Miroslav M. Živković

,

Snežana D. Vulović

,

Rodoljub S. Vujanac

ASSESSMENT OF THE DRUM REMAINING LIFETIME IN THERMAL POWER PLANT

ABSTRACT
In this paper analysis of stress and thermal-elastic-plastic strain of the drum is performed. Influence of modified thickness, yield stress and finite element model of welded joint between pipe and drum on assessment of the remaining lifetime of the drum in the thermal power plant is analyzed. Two analyses are compared. In the first, drum is modeled by shell and by 3D finite elements with projected geometrical and material data of drum. Then, the drum is modeled by shell and by 3D finite elements with modified thickness and yield stress. The analysis show that detailed modeling of stress concentration zones is necessary. Adequate modeling gives lower maximal effective plastic strain and increased number of cycles and, in that case, 3D finite elements are better comparing to shell finite elements.
KEYWORDS
boiler drum, plastic strain, life time, finite element method
PAPER SUBMITTED: 2010-05-07
PAPER REVISED: 2010-06-30
PAPER ACCEPTED: 2010-07-04
DOI REFERENCE: https://doi.org/10.2298/TSCI100507030Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE Supplement 1, PAGES [S313 - S321]
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Assessment of the drum remaining lifetime in thermal power plant

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence