EXPERIMENTAL INVESTIGATION OF CONCRETE-FILLED HIGH STRENGTH STAINLESS STEEL TUBE COLUMNS FOR TALL BUILDING CONSTRUCTION

2005 ◽  
Author(s):  
BEN YOUNG ◽  
EHAB ELLOBODY
Keyword(s):  
Experimental Investigation ◽  
Stainless Steel ◽  
High Strength ◽  
Steel Tube ◽  
Tall Building ◽  
Building Construction ◽  
Stainless Steel Tube

Springback law of high-strength 21-6-9 stainless steel tube in numerical control bending under different process parameters

2015 ◽  
Vol 231 (10) ◽  
pp. 1783-1792 ◽  
Author(s):  
Jun Fang ◽  
Shiqiang Lu ◽  
Kelu Wang ◽  
Zhengjun Yao
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Cross Section ◽  
Process Parameters ◽  
High Strength ◽  
Steel Tube ◽  
Numerical Control ◽  
Stainless Steel Tube ◽  
Outer Diameter ◽  
The Cross

In order to achieve the precision bending deformation, the effects of process parameters on springback behaviors should be clarified preliminarily. Taking the 21-6-9 high-strength stainless steel tube of 15.88 mm × 0.84 mm (outer diameter × wall thickness) as the objective, the multi-parameter sensitivity analysis and three-dimensional finite element numerical simulation are conducted to address the effects of process parameters on the springback behaviors in 21-6-9 high-strength stainless steel tube numerical control bending. The results show that (1) springback increases with the increasing of the clearance between tube and mandrel Cm, the friction coefficient between tube and mandrel fm, the friction coefficient between tube and bending die fb, or with the decreasing of the mandrel extension length e, while the springback first increases and then remains unchanged with the increasing of the clearance between tube and bending die Cb. (2) The sensitivity of springback radius to process parameters is larger than that of springback angle. And the sensitivity of springback to process parameters from high to low are e, Cb, Cm, fb and fm. (3) The variation rules of the cross section deformation after springback with different Cm, Cb, fm, fb and e are similar to that before springback. But under same process parameters, the relative difference of the most measurement section is more than 20% and some even more than 70% before and after springback, and a platform deforming characteristics of the cross section deformation is shown after springback.

Strain Hardening Modeling of High-Strength Stainless Steel Tube

2011 ◽  
Vol 311-313 ◽  
pp. 2014-2019
Author(s):  
Ruo Dong Lu ◽  
He Yang ◽  
Heng Li ◽  
Ze Kang Wang ◽  
Mei Zhan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Strain Hardening ◽  
Large Strain ◽  
High Strength ◽  
Tensile Tests ◽  
Steel Tube ◽  
Uniaxial Tensile ◽  
Stainless Steel Tube ◽  
Hardening Models ◽  
Piecewise Functions

By the uniaxial tensile tests of both the arc and tube section samples, the strain hardening curves of 21-6-9 high-strength stainless steel tube(HSST) are obtained. Considering that the uniform plastic deformation stage of the curve is short and the flow stress in large strain area is unknown for this tube, different strain hardening models have been established based on single and piecewise functions, respectively. By comparing the experimental results and the numerical ones in terms of load-displacement curves, it shows the constitutive model achieved by three Swift fitting functions can better characterize the strain hardening response of the 21-6-9 HSST in large strain region.

scholarly journals A New Stainless-Steel Tube-in-Tube Damper for Seismic Protection of Structures

2020 ◽  
Vol 10 (4) ◽  
pp. 1410 ◽  
Author(s):  
Guillermo González-Sanz ◽  
David Escolano-Margarit ◽  
Amadeo Benavent-Climent
Keyword(s):  
Stainless Steel ◽  
Energy Dissipation ◽  
Passive Control ◽  
High Strength ◽  
Steel Tube ◽  
Shaking Table ◽  
Width Ratio ◽  
Stainless Steel Tube ◽  
Seismic Loadings ◽  
Energy Dissipation Capacity

This paper investigates a new stainless-steel tube-in-tube damper (SS-TTD) designed for the passive control of structures subjected to seismic loadings. It consists of two tubes assembled in a telescopic configuration. A series of slits are cut on the walls of the exterior tube in order to create a series of strips with a large height-to-width ratio. The exterior tube is connected to the interior tube so that when the brace-type damper is subjected to forced axial displacements, the strips dissipate energy in the form of flexural plastic deformations. The performance of the SS-TTD is assessed experimentally through quasi-static and dynamic shaking table tests. Its ultimate energy dissipation capacity is quantitatively evaluated, and a procedure is proposed to predict the failure. The cumulative ductility of the SS-TTD is about 4-fold larger than that reported for other dampers based on slit-type plates in previous studies. Its ultimate energy dissipation capacity is 3- and 16-fold higher than that of slit-type plates made of mild steel and high-strength steel, respectively. Finally, two hysteretic models are investigated and compared to characterise the hysteretic behaviour of the SS-TTD under arbitrarily applied cyclic loads.

Experimental investigation of forced flow boiling of nitrogen in a horizontal corrugated stainless steel tube

Cryogenics ◽  
2015 ◽  
Vol 70 ◽  
pp. 47-56 ◽  
Author(s):  
Xuemei Su ◽  
Xingya Chen ◽  
Jionghui Liu ◽  
Shuangtao Chen ◽  
Yu Hou
Keyword(s):  
Experimental Investigation ◽  
Stainless Steel ◽  
Flow Boiling ◽  
Steel Tube ◽  
Forced Flow ◽  
Stainless Steel Tube
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