Prediction of the initial fatigue crack location of automatically welded tubular joints for jacket support structures

被引：0
|
作者：
Schaumann, P. [1 ]
Schuermann, K. [1 ]
Pittner, A. [2 ]
Rethmeier, M. [2 ,3 ]
机构：
[1] Leibniz Univ Hannover, Inst Steel Construct, ForWind Hannover, Hannover, Germany
[2] BAM Fed Inst Mat Res & Testing, Berlin, Germany
[3] Tech Univ Berlin, Inst Machine Tools & Factory Management, Berlin, Germany
来源：
ADVANCES IN ENGINEERING MATERIALS, STRUCTURES AND SYSTEMS: INNOVATIONS, MECHANICS AND APPLICATIONS | 2019年
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D O I：
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中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
To increase the competitiveness of jacket substructures compared to monopiles a changeover from an individual towards a serial jacket production based on automated manufactured tubular joints combined with standardized pipes has to be achieved. Therefore, this paper addresses fatigue tests of automatically welded tubular X-joints focusing on the location of the technical fatigue crack. For this X-joint, the detected location of the technical crack is then compared to numerical investigations predicting the most fatigue prone notch considering the structural stress approach as well as the notch stress approach. Additionally, the fatigue prone hot spot according to both approaches is compared for a typical offshore jacket double-K-joint to emphasize the significance of the presented outcomes for the existing offshore structures. Besides, the welding process of the automatically manufactured tubular X-joints is presented.
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页码：575 / 580
页数：6
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