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http://dx.doi.org/10.5781/JWJ.2016.34.4.28

A Study on Evaluation of Residual Stress Redistribution for FCA Butt Weldment of Ultra-Thick YP47 Steel Plate under Tensile Cyclic Load  

Kang, Bong Gook (Hyundai Heavy Industries)
Lee, Dong Ju (Hyundai Heavy Industries)
Shin, Sang Beom (Hyundai Heavy Industries)
Publication Information
Journal of Welding and Joining / v.34, no.4, 2016 , pp. 28-33 More about this Journal
Abstract
The purpose of this study is to evaluate the redistribution of transverse residual stress in the multi-pass FCA butt weld of YP47 in the hatch coaming top plate of ultra large size containership under the tensile cyclic load. In order to do it, the configuration of modified H type specimen including restraint length was first designed to simulate the restraint condition of the butt weld in hatch coaming top plate. FE analysis procedure for evaluating the transverse residual stress was verified by comparing the calculated mean and surface residual stresses with the measured results in the test specimen. After that, the effect of the cyclic load on the redistribution of transverse residual stress was evaluated by comprehensive FEA. From the results, it was found that although the maximum transverse residual stress decreased with an increase in the applied maximum load, the effect of the cyclic load on the mean residual stress is small enough to be negligible. It is because the maximum stress of the ship corresponding to the probability of 10E-8 is less than 70% of yield stress of the weld.
Keywords
Residual stress redistribution; Ultra large size containership; Restraint condition; Tensile cyclic load;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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2 British Standard 7910, Guide to Methods for Assessing the Acceptability of Flaws in Metallic Structures, (2013)
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