Crushing of Aluminum Tubes Under Hydrostatic and Localized Pressure

1950 ◽  
Vol 17 (3) ◽  
pp. 324-326
Author(s):  
E. Creutz
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Hydrostatic Pressure ◽  
Theory Of Elasticity ◽  
Test Results ◽  
External Hydrostatic Pressure ◽  
Steel Tubes ◽  
Crushing Strength ◽  
Elasticity Equations ◽  
Aluminum Tubes

Abstract In the theory of elasticity equations have been derived by Sturm and Timoshenko for the crushing strength of long tubes subjected to external hydrostatic pressure. These equations have been found to fit experimental data on steel tubes, provided the length is several times the diameter, and the ratio of diameter to wall thickness exceeds about 30. No similar test data had been taken on aluminum tubes so an experimental study was carried out to determine whether the equations mentioned would apply. No satisfactory correlation was found to exist, but a simple equation was derived which is well within the reproducibility of the test results.

Experimental Study of Post-Fire Bearing Capacity of the Circular Steel Tubes with Different Fire-Resistant Coating

2010 ◽  
Vol 163-167 ◽  
pp. 749-753
Author(s):  
Yao Ji ◽  
Xin Tang Wang ◽  
Ming Zhou ◽  
Wan Zhen Wang
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Fire Test ◽  
Steel Tube ◽  
Test Results ◽  
Fire Response ◽  
Steel Tubes ◽  
Protective Material ◽  
Tubular Columns ◽  
Maximum Value

In order to look into the causes of fire response and post-fire bearing capacity of the steel tubular columns protected with different materials, the fire test was conducted for a set of circular steel tubes protected with different materials such as gypsum fireproof panel, bamboo plywood and the ordinary lumber core plywood, and the steel tube without any protective material. The fire response temperature of surface of steel tubes is measured and the axial compressive bearing capacity of the specimens after fire are tested and analyzed. The test results show that gypsum fireproof panel has the best fire protection characteristics, the ordinary lumber core plywood and bamboo plywood can also retard rising of the surface temperature of the steel tubes during the initial 35min although they are combustible materials. It is found that the post-fire bearing capacity of the steel tubes protected with different materials varies evidently, and the maximum value of response temperature has the greatest effect.

An Experimental Study of the Strength of Standard Flanged and Dished and Ellipsoidal Heads Convex to Pressure

1964 ◽  
Vol 86 (2) ◽  
pp. 188-192 ◽  
Author(s):  
R. Bart
Keyword(s):  
Experimental Study ◽  
Hydrostatic Pressure ◽  
Yield Strength ◽  
Test Results ◽  
Face Shape

Test results are reported for a series of 24 dished heads subjected to hydrostatic pressure on the convex face. Shape, thickness, and yield strength measurements are tabulated together with the actual collapse pressures.

Effects of Boundary Conditions and Initial Out-of-Roundness on the Strength of Thin-Walled Cylinders Subject to External Hydrostatic Pressure

1956 ◽  
Vol 23 (3) ◽  
pp. 351-358
Author(s):  
G. D. Galletly ◽  
R. Bart
Keyword(s):  
Hydrostatic Pressure ◽  
Boundary Conditions ◽  
Semiempirical Methods ◽  
Test Results ◽  
External Hydrostatic Pressure ◽  
Simply Supported ◽  
Small Deflection ◽  
The Difference ◽  
Deflection Theory ◽  
Theoretical Results

Abstract Using classical small-deflection theory, an investigation was made of the effects of boundary conditions and initial out-of-roundness on the strength of cylinders subject to external hydrostatic pressure. The equations developed in this paper for initially out-of-round cylinders with clamped ends, and a slightly modified form of the equations previously derived by Bodner and Berks for simply supported ends, were applied to some actual test results obtained from nine steel cylinders which had been subjected to external hydrostatic pressure. Three semiempirical methods for determining the initial out-of-roundness of the cylinders also were investigated and these are described in the paper. The investigation indicates that if the initial out-of-roundness is determined in a manner similar to that suggested by Holt then the correlation between the experimental and theoretical results is quite good. The investigation also indicates that while the difference in collapse pressures for clamped-end and simply supported perfect cylinders may be quite considerable, this does not appear to be the case when initial out-of-roundnesses of a practical magnitude are considered.

Experimental Study of Behavior of Ceramsite Concrete Filled Steel Tubes after Exposure to Fire

2011 ◽  
Vol 71-78 ◽  
pp. 3721-3724 ◽  
Author(s):  
Ming Zhou ◽  
Xin Tang Wang ◽  
Jian Min Wang ◽  
Zhi Guo Xie
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Fire Behavior ◽  
Test Results ◽  
Fire Response ◽  
Fire Load ◽  
Steel Tubes ◽  
Maximum Value ◽  
Concrete Filled Steel Tubes ◽  
Strength And Ductility

The post-fire behavior of a set of ceramsite concrete filled steel tubes (note as CCST) after exposure to fire are experimentally studied. Effect of the maximum value of fire response temperatures of the tubes and their geometric parameters on the strength and ductility of the specimens were especially discussed. The test results show that the specimens of CCST have higher post-fire bearing capacity and better ductility, there was no obvious descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens has great effect on the post-fire bearing capacity of concrete-filled steel tubes subjected to fire load.

Experimental study on ultimate strength of steel-welded ring-stiffened conical shell under external hydrostatic pressure

2019 ◽  
Vol 67 ◽  
pp. 102634 ◽  
Author(s):  
Sang-Rai Cho ◽  
Teguh Muttaqie ◽  
Quang Thang Do ◽  
Sang Hyun Park ◽  
Seung Min Kim ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hydrostatic Pressure ◽  
Ultimate Strength ◽  
Conical Shell ◽  
External Hydrostatic Pressure

Hydrostatic Tests of Two Prolate Spheroidal Shells

1965 ◽  
Vol 9 (03) ◽  
pp. 77-104
Author(s):  
John J. Healey
Keyword(s):  
Hydrostatic Pressure ◽  
Diameter Ratio ◽  
Minor Axis ◽  
Elastic Buckling ◽  
Test Results ◽  
External Hydrostatic Pressure ◽  
Prolate Spheroidal ◽  
Axis Ratio ◽  
Buckling Strength

Two machined models were collapsed under external hydrostatic pressure to determine the elastic buckling strength of complete prolate spheroidal shells. The test results demonstrated that collapse pressures 40 percent greater than predicted by available theory can be achieved for a prolate spheroidal shell with a major to minor axis ratio of 3.0 and a thickness to diameter ratio of 0.015.

EXPERIMENTAL STUDY OF THE KINEMATIC PARAMETERS OF MOVEMENT OF CARS FORCED IDLE MOTION

2018 ◽  
pp. 52-57
Author(s):  
Ivelin Kostov
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Kinematic Parameters ◽  
Research Results ◽  
Software Product

In the work brought some experimental data of kinematic parameters of movement of cars forced idle, as the software product was used to diagnose 900 ATS, which recorded kinematic parameters of vehicle. On the basis of the conducted experimental research results are shown tabulated and analysed.

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