Theoretical Analysis of the Scattering of Short Acoustic Pulses by a Thin‐Walled Metallic Cylinder in Water

1962 ◽  
Vol 34 (12) ◽  
pp. 1929-1932 ◽  
Author(s):  
C. W. Horton ◽  
W. R. King ◽  
K. J. Diercks
Keyword(s):  
Theoretical Analysis ◽  
Metallic Cylinder ◽  
Thin Walled

Elastic Critical Buckling Modes and Stress of Cold-Formed Thin-Walled Lipped Channel with Multiple Intermediate Stiffeners

2014 ◽  
Vol 501-504 ◽  
pp. 470-473
Author(s):  
Guang Yue Ma
Keyword(s):  
Theoretical Analysis ◽  
Experimental Results ◽  
Elastic Buckling ◽  
Channel Member ◽  
Buckling Modes ◽  
Important Thing ◽  
Buckling Stress ◽  
Thin Walled

Elastic buckling modes of cold-formed thin-walled steel member have three relevant types: local, distortional and global. The complicated and important thing is to differentiating buckling modes and resolving buckling stress for engineers. It will be given for Cold-formed thin-walled lipped channel member with multiple intermediate stiffeners. The theoretical analysis coincide exactly with the experimental results, it can be used as a reference for engineers.

scholarly journals Experimental Study of Features of Thin-Walled Pipes Sizing in the Line of a Pipe Rolling Plant with an Automatic Mill

2021 ◽  
Vol 346 ◽  
pp. 01032
Author(s):  
S.Yu. Belyaev ◽  
A.A. Fedulov ◽  
Yu.M. Chernyshev ◽  
V.I. Kuznetsov ◽  
M.Yu. Bulganina
Keyword(s):  
Theoretical Analysis ◽  
Wall Thickness ◽  
Experimental Studies ◽  
Predictive Values ◽  
Strength Group ◽  
Automatic Mill ◽  
Thin Walled Pipe ◽  
Rolling Plant ◽  
Thin Walled ◽  
Increased Strength

The aim of the study is to establish the actual level of working loads on the roll drive line of the sizing mill installed as part of the PRP-220 with an automatic mill, when switching to the production of steel pipes from increased strength group. The study is based on a complex experimental and theoretical analysis. After the processing of the results of experimental studies a comparison of the most loaded sizing route for a thin-walled pipe with a diameter of 244.5 mm and a wall thickness of 8.9 mm (D/S = 27.5) made of steel of strength group “D” was made with the route for a pipe with a diameter of 177.8 mm and a wall thickness of 9.2 mm (D/S = 19.3) from steel of strength group “E”. Graphs of the observed processes are presented, as well as calculated predictive values of sizing of thin-walled pipes for steel of strength group “E”, obtained on the basis of an experimental-theoretical analysis of the growth of flow stress. Recommendations have been given for improving the equipment of the PRP-220 sizing mill for the production of pipes with increased diameters from steels of increased strength groups.

Vibration of Hemi-Ellipsoidal Axisymmetric Domes Submerged in Water

1986 ◽  
Vol 200 (6) ◽  
pp. 389-398 ◽  
Author(s):  
C T F Ross ◽  
T Johns
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aspect Ratio ◽  
Theoretical Analysis ◽  
Shell Structure ◽  
The Finite Element Method ◽  
Axisymmetric Form ◽  
Different Types ◽  
Thin Walled ◽  
Theory And Experiment

Ten thin-walled domes, of hemi-ellipsoidal form, were vibrated in air and while partially and fully submerged in water. The domes varied in shape from oblate ones of aspect ratio (AR) 0.25 to prolate ones of aspect ratio 4. The fundamental modal patterns for the oblate domes tended to be of axisymmetric form, while the fundamental modal patterns of the hemispherical and prolate domes tended to be of asymmetric or lobar form. The theoretical analysis was carried out by the finite element method, where the motion of the shell structure was represented by three different types of element and the motion of the water was represented by a solid annular element. Comparison between theory and experiment was found to be good.

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