Fatigue assessment of web-stiffened corners in plated structures by local approaches

IF 1.4 Q3 ENGINEERING, MARINE
C. Fischer, W. Fricke, C. Rizzo
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引用次数: 3

Abstract

ABSTRACT This paper deals with the fatigue assessment of three ship structural details. While local approaches, which are proposed in relevant literature and which nowadays are also widely applied in design practice, can successfully assess the fatigue strength of several welded joints, web-stiffened complex geometries show peculiar features, needing to bias the results of local approaches. Hence, even recent rule requirements need to include correction factors to account for such deviations. The present study identifies effects, which alter particularly the crack propagation behaviour. Some test cases were re-evaluated using approaches referring to the effective notch stress and to the strain energy density. Results are compared with the test results in order to provide explanations to the above-mentioned biased assessments.
局部法评估板结构腹板加肋转角的疲劳性能
本文对三种船舶结构细节进行疲劳评估。虽然相关文献中提出的局部方法可以成功地评估几个焊接接头的疲劳强度,但腹板加筋的复杂几何形状显示出独特的特征,需要对局部方法的结果产生偏差。因此,即使是最近的规则要求也需要包括校正因子来解释这种偏差。本研究确定了影响,特别是改变裂纹扩展行为的影响。使用参考有效缺口应力和应变能量密度的方法重新评估了一些测试案例。将结果与测试结果进行比较,以便对上述有偏见的评估作出解释。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ship Technology Research
Ship Technology Research ENGINEERING, MARINE-
CiteScore
4.90
自引率
4.50%
发文量
10
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