Experimental investigation on fatigue behavior of composite beams with different studs arrangements

Structures ◽  
2022 ◽  
Vol 35 ◽  
pp. 146-159
Author(s):  
Ayman El-Zohairy ◽  
Hani Salim ◽  
Hesham Shaaban
Keyword(s):  
Experimental Investigation ◽  
Fatigue Behavior ◽  
Composite Beams

Theoretical and experimental investigation of magnetostrictive composite beams

2001 ◽  
Vol 10 (5) ◽  
pp. 934-945 ◽  
Author(s):  
Victor Giurgiutiu ◽  
Florin Jichi ◽  
Justin B Berman ◽  
Jason M Kamphaus
Keyword(s):  
Experimental Investigation ◽  
Composite Beams

Fatigue Behavior of Butt Weld Seams: Experimental Investigation and Numerical Simulation

2014 ◽  
Author(s):  
Kay Langschwager ◽  
Alexander Bosch ◽  
Eliane Lang ◽  
Jürgen Rudolph ◽  
Michael Vormwald ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Fatigue Behavior ◽  
Special Focus ◽  
Fatigue Lifetime ◽  
Ongoing Research ◽  
Butt Weld ◽  
Welded Structures ◽  
Factors Of Influence ◽  
Weld Seams

Austenitic stainless steel of type X6CrNiNb18-10 (1.4550) is a widely used material in piping and components of nuclear power plants. The fatigue behavior of these components is often operationally determined by thermomechanical strains and corresponding stresses. Welded structures lead to complex stresses in the component and potential fatigue lifetime reductions. Various geometrical and microstructural inhomogeneities in welded structures represent the main factors of influence. Nevertheless, clear identification and quantification of various factors of influence are issues still to be resolved. Within the framework of an ongoing research project, the experimental investigation comprises uniaxial and biaxial fatigue experiments on welded joints which cover temperatures from 25°C to 350°C. Furthermore, a key issue deals with the thermomechanical fatigue behavior of machined and unmachined butt weld seams. A special focus is set on typical low cycle fatigue (LCF) tests in order to explain the behavior of the base material and the weld material to identify the influence of microstructural inhomogeneities. In addition, specimens manufactured directly from the pipe components are tested to examine the influence of the butt weld seam geometry. For a better understanding of the local strain effects, optical strain field measurements (OSFM) are conducted and used to validate numerical simulation. The finite element method (FEM) is utilized to expand the parameter space and identify the main parameters. Experimental and numerical results show that fatigue failure occurs either in the base metal in the vicinity of the welded zone or in the top layer of the weld, depending on the loading conditions. This knowledge is used to develop an approach to fatigue lifetime estimation.

The Fatigue Behavior of Negative Moment Regions of Continuous Composite Beams at Low Temperatures

1975 ◽  
Vol 2 (1) ◽  
pp. 98-115
Author(s):  
A. E. Long ◽  
K. Van Dalen ◽  
P. Csagoly
Keyword(s):  
Fatigue Behavior ◽  
Bending Moment ◽  
Composite Beams ◽  
Horizontal Shear ◽  
Shear Connectors ◽  
Significant Difference ◽  
Show Evidence ◽  
Negative Moment ◽  
Central Support ◽  
Push Out

The fatigue behavior of the negative moment region of continuous steel–concrete composite beams under Canadian temperature conditions was studied. Tests were conducted on three 26 ft 0 in. (7.92 m) long beams, continuous over a central support, and on 11 conventional push-out specimens. These were supplemented by a theoretical study of the internal forces in the beams using an iterative method of analysis.The close agreement between measured and theoretical strains and deflections indicated that good interaction was achieved throughout the length of the beams. The beams sustained 500 000 cycles of loading with no serious deterioration of composite action. The pattern of stud failures was consistent from beam to beam and reflected closely the calculated distribution of horizontal shear force at the steel–concrete interface. Stud shear connectors in the negative moment region where the slab had cracked in tension were found to be slightly less effective than studs in the positive bending moment regions.Neither the detailed study of individual connectors in the beams nor the results of the push-out tests show evidence of a reduction in the fatigue life of studs at −20 °F (−29 °C) relative to room temperature. The beams also exhibited no significant difference in their overall performance at these two temperatures.

An Experimental Investigation into the Behavior of Steel-Timber Composite Beams

2022 ◽  
Vol 27 (1) ◽  
pp. 04021055
Author(s):  
Shakeel Ahmad Waseem ◽  
Zeeshan Manzoor ◽  
Javed Ahmad Bhat
Keyword(s):  
Experimental Investigation ◽  
Composite Beams

The Effects of Shear Stud Distribution on the Fatigue Behavior of Steel–Concrete Composite Beams

2020 ◽  
Vol 45 (10) ◽  
pp. 8403-8426 ◽  
Author(s):  
Ahmed I. Hassanin ◽  
Hesham F. Shabaan ◽  
Ahmed I. Elsheikh
Keyword(s):  
Fatigue Behavior ◽  
Composite Beams

Experimental investigation on static and fatigue behavior of welded sm490a steel under low temperature

2009 ◽  
Vol 9 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Ki-Weon Kang ◽  
Byeong-Choon Goo ◽  
Jae-Hoon Kim ◽  
Doo-Kie Kim ◽  
Jung-Kyu Kim
Keyword(s):  
Experimental Investigation ◽  
Low Temperature ◽  
Fatigue Behavior
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