Behavior of plate-to-circular hollow section joints of 600 MPa high-strength steel

2012 ◽  
Vol 12 (4) ◽  
pp. 473-482 ◽  
Author(s):  
Swoo-Heon Lee ◽  
Kyung-Jae Shin ◽  
Hee-Du Lee ◽  
Woo-Bum Kim ◽  
Jae-Guen Yang
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Hollow Section ◽  
Circular Hollow Section

scholarly journals Numerical Study on the Deformation Behavior of Longitudinal Plate-to-High-Strength Circular Hollow-Section X-Joints under Axial Load

2019 ◽  
Vol 9 (19) ◽  
pp. 3999
Author(s):  
Swoo-Heon Lee ◽  
Kyung-Jae Shin ◽  
So-Yeong Kim ◽  
Hee-Du Lee
Keyword(s):  
Yield Strength ◽  
High Strength Steel ◽  
Axial Load ◽  
Joint Strength ◽  
High Strength ◽  
Hollow Section ◽  
Strength Limit ◽  
Ultimate Deformation ◽  
Deformation Limit ◽  
Circular Hollow Section

This study aims to investigate the joint strength of longitudinal plate-to-high-strength steel circular hollow-section X-type joints under plate axial load. The material properties of high-strength steel with nominal yield strengths of 460, 650, 900, and 1100 MPa were used for parametric analysis. The variables for analysis were ratios of chord diameter to thickness, plate width to chord diameter, and utilization. To determine the capacity of connections, the joint strengths using a deformation limit and a strength limit were considered and compared with American Institute of Steel Construction (AISC), Eurocode 3, and ISO 14346. The joint strength determined by the ultimate deformation limit is approximately equal to the joint strength determined by the strength limit state at the yield strength of 460 MPa. The difference between both the joint strengths, however, becomes higher with increasing yield strength. The design equations estimate the joint strength based on the ultimate deformation limit approximately until the limitation of the nominal yield strength in each design code. As the nominal yield strength increases, the joint strengths are overestimated. In using high-strength steel in circular hollow-section X-type joints, the reduction factors of 0.75 and 0.62 for AISC and ISO 14346 are suggested for the nominal yield strengths of 900 and 1100 MPa, respectively. In Eurocode 3, the reduction factor of 0.67 is also suggested for a yield strength of 1100 MPa.

Ermüdung von Schweißverbindungen höher- und hochfester warmgefertigter nahtloser Stahlbauhohlprofile MSH/Fatigue of Welded Connections at Hot Finished Higher Strength or High Strength Hollow Sections

Konstruktion ◽  
2018 ◽  
Vol 70 (01-02) ◽  
pp. 76-81
Author(s):  
Bernd Kranz ◽  
Jörg Herrmann ◽  
Ronny Baum ◽  
Boris Straetmans
Keyword(s):  
Fatigue Strength ◽  
Boundary Conditions ◽  
Fatigue Test ◽  
High Strength Steel ◽  
High Strength ◽  
Machine Construction ◽  
Hollow Section ◽  
Steel Grades ◽  
Additional Reference

Inhalt: Dauerfestigkeit geschweißter Hohlprofilkonstruktionen ist für viele Anwendungen im Maschinenbau relevant. Für Schweißverbindungen höher- und hochfester Hohl- profilwerkstoffe gibt es aber nur eine begrenzte Anzahl verfügbarer Angaben. Ziel der vorliegenden Untersuchung an drei höher- und hochfesten Werkstoffen ist die Ermittlung von Wöhlerlinien bei unterschiedlichen Verarbeitungsrandbedingungen. Konkret wurden dazu konventionelle MSG Schweißverbindungen an bauteilähnlichen Proben ohne und mit Nahtvorbereitung sowie mit Nahtvorbereitung und Vorwärmen hergestellt und Ermüdungsversuchen unterzogen. Konstrukteuren und Verarbeitern dienen diese als weitere Referenz zur optimalen Nutzung der vorgestellten Verbindungen und Werkstoffe.   Abtract: Fatigue strength of welded hollow section designs is relevant for many applications in machine construction. For welded connections of higher strength or high strength hollow sections only a limited amount of data is available. Objective of the present research on three higher strength or high strength steel grades is the determination of Wöhler curves for different boundary conditions for processing. In practice components of conventionally GMAW welded-connections had been manufactured, without weld preparation, with weld preparation and with weld preparation and preheating – subsequently a fatigue test was done. Results serve designers and manufacturers as additional reference for optimized use of the presented joints and steel grades.

Recent research advances of high strength steel welded hollow section joints

Structures ◽  
2019 ◽  
Vol 17 ◽  
pp. 58-65 ◽  
Author(s):  
Xiaoyi Lan ◽  
Tak-Ming Chan
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Hollow Section
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