scholarly journals FEATURES OF CALCULATING THE DEFLECTION OF ROUND PLATES

Author(s):  
Anatoliy Cherepanov

A method for calculating the deflection of a round flat steel plate bearing an ax isymmetric load is considered. For practical calculations, dimensionless coefficients of deflection in the center of the plate, deflection at a certain distance from the center of the plate, the stress coefficient and the accompanying function, which depends on the deflection of the plate and the pressure force on it, are used.

Author(s):  
Anatoliy Cherepanov

A method for calculating the deflection of a round flat steel plate pinched along the edge, bearing an axisymmetric load, is considered. For practical calculations, dimensionless coeffi cients of deflection in the center and in the area of fixing a round flat plate pinched along the edge are applied, the stress coefficient and the accompanying function, which depends on the deflection of the plate and the pressure force on it, are taken into account


1997 ◽  
Vol 4 (2) ◽  
pp. 115-123 ◽  
Author(s):  
C. J. Litz

Statistical methodologies were employed for measuring and analyzing the explosively induced transient responses of a flat steel plate excited with shock. The application of design of experiment methodology was made to structure and test a Taguchi L9(32) full factorial experimental matrix (which uses nine tests to study two factors, with each factor examined at three levels) in which a helium-neon laser Doppler vibrometer and two piezocrystal accelerometers were used to monitor explosively induced vibrations ranging from 10 to 105Hz on a 96 × 48 × 0.25 in. flat steel plate. Resulting conclusions were drawn indicating how these techniques aid in understanding the pyroshock phenomenon with respect to the effects and interrelationships of explosive-charge weight and location on the laser Doppler and contract accelerometer recording systems.


Author(s):  
B S Yilbas ◽  
S J Hyder

In the present study laser ablation of a two-layer assembly with a cantilever arrangement is considered. The recoil pressure generated at the vapour front-workpiece interface is formulated and the resulting pressure force (loading force) is computed. The flexural motion of the workpiece due to the loading force is formulated. The first layer of the workpiece is Inconel 625 with a thickness on the order of 200 μm, which may resemble the HVOF (high-velocity oxygen fuel) coating, while the second layer is 1 mm thick stainless steel plate. The simulations are repeated for four values of the first layer thickness and the relation between the magnitude of the displacement and the first layer thickness is discussed. It is found that the displacement of the workpiece reaches as high as 2 μm in the region close to the free end, while the equivalent stress level is high in the region close to the fixed end. The temporal behaviour of the equivalent stress almost follows the displacement behaviour of the workpiece. As the first layer thickness increases, the displacement reduces. The variation of displacement with the first layer thickness is almost linear and the slope of this variation attains high values for certain time periods in the flexural motion.


2014 ◽  
Vol 783-786 ◽  
pp. 1753-1758 ◽  
Author(s):  
Murray Mahoney ◽  
Sam Sanderson ◽  
Peter Maak ◽  
Russell Steel ◽  
Jon Babb ◽  
...  

Friction Stir Welding (FSW) is being investigated as a method to fabricate a partial penetration closure weld of the steel vessel of a copper-coated used fuel container. The hemi-head is made of A516 Grade 70 steel and the cylinder body is made of A106 Grade C steel. In this initial feasibility study, the objective is to use FSW to demonstrate the merits of FSW using flat steel plate in concert with a closure weld joint designed specifically for a cylindrical container. To complete this objective, there are two initial feasibility demonstrations. First, demonstrate the capability of FSW to create defect free welds in a corner joint design with specific dimensions (10 mm deep weld nugget). Subsequently, verify the weld quality by ultrasonic inspection and metallography. Further, characterize weld zone properties by establishing mechanical properties and hardness at room temperature, and impact toughness at-5°C. Second, demonstrate the ability to use FSW to repair defects that might occur in the initial friction stir weld. Weld repair was accomplished by intentionally creating tunnel defects by FSW, performing metallography and ultrasonic inspection to characterize the morphology of the defects, performing a second friction stir weld repair over the defects, and verifying the subsequent weld integrity by repeating the metallography and ultrasonic inspections. Results on these initial two phases of this program are presented herein.


1934 ◽  
Vol 12 (3) ◽  
pp. 363
Author(s):  
L.B. Tuckerman ◽  
A.H. Stang ◽  
W.R. Osgood
Keyword(s):  

1954 ◽  
Vol 1954 (94) ◽  
pp. 145-158 ◽  
Author(s):  
Shunpei Yamauchi ◽  
Tsuneo Nakai ◽  
Toshyuki Kunihiro
Keyword(s):  

2014 ◽  
Vol 61 ◽  
pp. 1835-1839 ◽  
Author(s):  
Md Lokman Hosain ◽  
Rebei Bel Fdhila ◽  
Anders Daneryd

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