Fatigue Strength Assessment on a Multiplanar Tubular KK-Joints by Scaled Model Test

Yue Jingxia; Liu Yuliang; Zhang Chi; Zeng Qi; Dang Zhifan

doi:10.1115/1.4032158

Journal of Offshore Mechanics and Arctic Engineering | Volume 138 | Issue 2 | research-article

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Research Papers: Structures and Safety Reliability

Fatigue Strength Assessment on a Multiplanar Tubular KK-Joints by Scaled Model Test

Yue Jingxia, Liu Yuliang, Zhang Chi, Zeng Qi and Dang Zhifan

[+] Author and Article Information

Yue Jingxia

School of Transportation,
Wuhan University of Technology,
No. 1178, Heping Road,
Wuchang District,
Wuhan, Hubei 430063, China
e-mail: j.yue@whut.edu.cn

Liu Yuliang

School of Transportation,
Wuhan University of Technology,
No. 1178, Heping Road,
Wuchang District,
Wuhan, Hubei 430063, China
e-mail: liuyuliang@whut.edu.cn

Zhang Chi

School of Transportation,
Wuhan University of Technology,
No. 1178, Heping Road,
Wuchang District,
Wuhan, Hubei 430063, China
e-mail: chizhang@whut.edu.cn

Zeng Qi

School of Transportation,
Wuhan University of Technology,
No. 1178, Heping Road,
Wuchang District,
Wuhan, Hubei 430063, China
e-mail: zengqi1116@126.com

Dang Zhifan

School of Transportation,
Wuhan University of Technology,
No. 1178, Heping Road,
Wuchang District,
Wuhan, Hubei 430063, China
e-mail: dangzhifan296@163.com

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received March 2, 2015; final manuscript received November 18, 2015; published online January 21, 2016. Assoc. Editor: Myung Hyun Kim.

J. Offshore Mech. Arct. Eng 138(2), 021602 (Jan 21, 2016) (8 pages) Paper No: OMAE-15-1021; doi: 10.1115/1.4032158 History: Received March 02, 2015; Revised November 18, 2015

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Abstract

Multiplanar tubular KK-joints are one of the most popular joint types in offshore structures, which are exposed to cyclic loads and fatigue damages. In this paper, a fatigue prediction method based on scaled model test is proposed. First, a scaled KK-joint, including deviations for model simplification, was designed based on sensitive analysis and similarity analysis. Then, static and fatigue tests on the scaled model under axial loading were performed, by which hot spot stress (HSS) distributions and the maximum HSS were recorded. From the test, the fatigue crack initiates from the location of the maximum HSS and propagates along the weld toe. Finally, the maximum HSS of original KK-joint was deduced by finite element analysis (FEA), and then, the fatigue life was predicted accordingly and compared with the rule-based result.

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References

Lee, M. M. K. , 1999, “ Strength, Stress and Fracture Analyses of Offshore Tubular Joints Using Finite Elements,” J. Constr. Steel Res., 51(3), pp. 265–286. [CrossRef]

ABS, 2003, Fatigue Assessment of Offshore Structure, American Bureau of Shipping, Washington, DC.

DNV, 2010, Fatigue Design of Offshore Steel Structures, Det Norske Veritas, Oslo, Norway.

Karamanos, S. A. , Romeijn, A. , and Wardenier, J. , 2002, “ SCF Equations in Multi-Planar Welded Tubular DT-Joints Including Bending Effects,” Mar. Struct., 15(2), pp. 157–173. [CrossRef]

N'diaye, A. , Hariri, S. , Pluvinage, G. , and Azari, Z. , 2009, “ Stress Concentration Factor Analysis for Welded, Notched Tubular T-Joints Under Combined Axial, Bending and Dynamic Loading,” Int. J. Fatigue, 31(2), pp. 367–374. [CrossRef]

Shao, Y. , Zhi, F. , and Seng, T. , 2009, “ Prediction of Hot Spot Stress Distribution for Tubular K-Joints Under Basic Loadings,” J. Constr. Steel Res., 65(10–11), pp. 2011–2026. [CrossRef]

Woghiren, C. O. , and Brennan, F. P. , 2009, “ Weld Toe Stress Concentrations in Multi-Planar Stiffened Tubular KK Joints,” Int. J. Fatigue, 31(1), pp. 164–172. [CrossRef]

Hoon, K. , Wong, L. , and Soh, A. , 2001, “ Experimental Investigation of a Double-Plate Reinforced Tubular T-Joint Subjected to Combined Loadings,” J. Constr. Steel Res.,” 57(9), pp. 1015–1039. [CrossRef]

Chen, J. , Chen, J. , and Jin, W. , 2010, “ Experiment Investigation of Stress Concentration Factor of Concrete-Filled Tubular T Joints,” J. Constr. Steel Res., 66(12), pp. 1510–1515. [CrossRef]

Qian, X. , Jitpairod, K. , Marshall, P. , Swaddiwudhipong, S. , Ou, Z. , Zhang, Y. , and Pradana, M. R. , 2014, “ Fatigue and Residual Strength of Concrete-Filled Tubular x-Joints With Full Capacity Welds,” J. Constr. Steel Res., 100(13), pp. 21–35. [CrossRef]

Qian, X. , Petchdemaneengam, Y. , Swaddiwudhipong, S. , Marshall, P. , Ou, Z. , and Nguyen, C. T. , 2013, “ Fatigue Performance of Tubular x-Joints With PJP Welds: I—Experimental Study,” J. Constr. Steel Res., 2013(90), pp. 49–59. [CrossRef]

Chen, Y. , Tong, Z. , Hua, H. , Wang, Y. , and Gou, H. , 2009, “ Experimental Investigation on the Dynamic Response of Scaled Ship Model With Rubber Sandwich Coatings Subjected to Underwater Explosion,” Int. J. Impact Eng., 36(2), pp. 318–328. [CrossRef]

Gordo, J. M. , and Soares, C. G. , 2015, “ Experimental Evaluation of the Ultimate Bending Moment of a Slender Thin-Walled Box Girder,” ASME J. Offshore Mech. Arct. Eng., 137(2), p. 021604. [CrossRef]

Elshafey, A. A. , Haddara, M. R. , and Marzouk, H. , 2009, “ Dynamic Response of Offshore Jacket Structures Under Random Loads,” Mar. Struct., 22(3), pp. 504–521. [CrossRef]

Sakai, Y. , Hosaka, T. , Isoe, A. , Ichikawa, A. , and Mitsuki, K. , 2004, “ Experiments on Concrete Filled and Reinforced Tubular k-Joints of Truss Girder,” J. Constr. Steel Res., 60(3), pp. 683–699. [CrossRef]

Schumacher, A. , Borges, L. C. , and Nussbaumer, A. , 2009, “ A Critical Examination of the Size Effect Correction for Welded Steel Tubular Joints,” Int. J. Fatigue, 31(8), pp. 1422–1433. [CrossRef]

Schuring, D. J. , 1977, “ Scale Models in Engineering,” J. INCE/Jpn., 3, pp. 21–26.

Madenci, E. , and Guven, I. , 2007, The Finite Element Method and Applications in Engineering Using ansys^®, Springer, Berlin.

API, 1993, Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms Load and Resistance Factor Design, American Petroleum Institute, Washington, DC.

AWS, 1996, Structural Welding Code-Steel, American Welding Society, Miami, FL.

Wylde, J. G. , and Nald, A. , 1980, “ The Influence of Joint Dimensions on the Fatigue Strength of Welded Tubular Joints,” Int. J. Fatigue, 2(1), pp. 31–36. [CrossRef]

Figures

Fig. 1

Geometrical description of tubular KK-joint

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Fig. 2

Process of scaled model design

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Fig. 3

General and local FE models for tubular KK-joints

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Fig. 4

Definitions of HSS and reference stress location

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Fig. 5

Stress contour plot of tubular KK-joint under axial loads

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Fig. 6

HSS of tubular KK-joints with different dimensions

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Fig. 7

Test rig and loading system

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Fig. 8

Measurement strain gauges around brace/chord intersection

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Fig. 9

HSS distribution along the weld toe of tubular KK-joint

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Fig. 10

Fatigue crack propagation at weld toe

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Fig. 11

Process of fatigue strength prediction based on scaled model

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Fig. 12

FEA on test model with rack inside the chord

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Fig. 13

HSS distributions of tubular KK-joints considering c deviation

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Fig. 14

HSS distributions of tubular KK-joints considering dimension deviation

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Fig. 15

C_σhss obtained from FEA and similarity analysis

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Fig. 16

S–N curves provided by ABS

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Jingxia Y, Yuliang L, Chi Z, Qi Z, Zhifan D. Fatigue Strength Assessment on a Multiplanar Tubular KK-Joints by Scaled Model Test. ASME. J. Offshore Mech. Arct. Eng. 2016;138(2):021602-021602-8. doi:10.1115/1.4032158.

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Fatigue Strength Assessment on a Multiplanar Tubular KK-Joints by Scaled Model Test

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