Fatigue Research on Welding Joint of the Main Girder in Bridge Crane

Abstract:

Fatigue problems about large sized structure components ,such as bridge crane girder , has always been the bottleneck of mechanical products lightweight, reliability, security. In order to study fatigue problem about crane girder in the actual conditions, the dangerous spot of the girder is identified by using the finite element method to analyze structural stress. By simplified model , set up to reflect the main beam welding details of the characteristics of the small size of the process welding fatigue specimen model, and carried out a series of fatigue life test. Specimen fatigue test results quantitative descript the actual fatigue life of the bridge crane girder welded structures. By data fitting, the S-N curve equation of the bridge crane girder include the specific materials, the stress ratio, the welding process and special structure is obtained. It provides a scientific basis and practical methods to solve weld fatigue life design and the remaining life prediction about the crane girder.

• Periodical: Advanced Materials Research (Volume 711)
• Pages: 323-326
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.711.323
• Online since: June 2013
• Authors: Nan Liu, Dong Xiang, Peng Mou, Ying Ren, Ning Xie
• Keywords: Bridge Crane, Fatigue Test, Welded Joint

References

[1] Fricke W. (2003) Fatigue Analysis of Welded Joints: State of Development, Marine Structures, 16,185-200

DOI: 10.1016/s0951-8339(02)00075-8

[2] Radaj D., Sonsino C.M., Fricke W. (2006) Fatigue Assessment of Welded Joints by LocalApproaches (2nd Ed.), Woodhead Publishing, Cambridge

DOI: 10.1533/9781845691882

[3] Hobbacher A. (1996) Fatigue Design of Welded Joints and Components, Recommendations of IIWJoint Working Group XIII – XV, Woodhead Publishing

[4] A. Hobbacher: Recommendations for Fatigue Design of Welded Joints and Components, IIWdocument XIII-1539-96 / XV-845-96, Update June 2002.