scholarly journals THIN-WALLED BARRELL SHELL DEFLECTIVE MODE ANALYSIS

2018 ◽  
Vol 1 (50) ◽  
pp. 69-78 ◽  
Author(s):  
A. V. Makhinko ◽  
N. О. Makhinko
Keyword(s):  
Basic Function ◽  
Mode Analysis ◽  
Graphical Form ◽  
Axially Symmetric ◽  
Deflection Analysis ◽  
Variable Wall Thickness ◽  
Variable Wall ◽  
Corrugated Wall ◽  
Strain Equation ◽  
Symmetric Load

The paper deals with the deflective mode of steel rotary shell with different form of outer surface that are loaded with axially symmetric load. The results show solution of shell voltage and strain equation under the load that is described by exponential law and based on efforts from temperature differentials. Besides, the paper represents design formulas for deflection analysis, running bending moments and running transverse forces in shells with different abutment to the basis. It was shown the basic function of deflection and maximum value of relevant parameters of the reaction. The analysis of aspects about efficiency of using corrugated wall for steel barrel shell is done. The results in analytical and graphical form are shown. According to resulting formulas, it was made comparative calculations of shells with constant and variable wall thickness.

scholarly journals Extrusion of magnesium alloy hollow profiles with axial variable wall thickness

2019 ◽  
Author(s):  
Maik Negendank ◽  
Vidal Sanabria ◽  
Sören Müller ◽  
W. Reimers
Keyword(s):  
Magnesium Alloy ◽  
Wall Thickness ◽  
Variable Wall Thickness ◽  
Variable Wall

Structural Analysis and Internal Force Calculation of Variable Cross-Section Silo

2012 ◽  
Vol 446-449 ◽  
pp. 429-434
Author(s):  
Rui Ting Ma
Keyword(s):  
Cross Section ◽  
Variable Cross Section ◽  
Internal Force ◽  
Variable Cross ◽  
Axially Symmetric ◽  
Internal Forces ◽  
Differential Element ◽  
Symmetric Load ◽  
Force Calculation ◽  
Constant Section

In this paper, the differential element of constant-section silo wall suffering from axially symmetric load is analyzed. From the results of constant-section silo, the author derives the displacements and internal forces of variable cross-section silo. Through a specific example, this paper compares the displacements , internal forces and concrete consumption of variable cross-section silo with those of constant-section silo, and discusses the merits of variable cross-section silo.

Obtaining Body Parts with Variable Wall Thickness Along the Perimeter

2021 ◽  
pp. 473-479
Author(s):  
Yuliya Bessmertnaya ◽  
Alexander Malyshev ◽  
Vladimir Vikhorev ◽  
Pavel Romanov
Keyword(s):  
Wall Thickness ◽  
Body Parts ◽  
Variable Wall Thickness ◽  
Variable Wall

The Bending of Curved Pipes With Variable Wall Thickness

2003 ◽  
Vol 70 (2) ◽  
pp. 253-259 ◽  
Author(s):  
V. P. Cherniy
Keyword(s):  
Cross Section ◽  
Wall Thickness ◽  
Shell Theory ◽  
Neutral Line ◽  
Radius Of Curvature ◽  
Curved Pipes ◽  
Variable Wall Thickness ◽  
Previous Solution ◽  
Variable Wall ◽  
Thin Shell Theory

A general solution is presented for the in-plane bending of short-radius curved pipes (pipe bends) which have variable wall thickness. Using the elastic thin-shell theory, the actual radius of curvature of the pipe’s longitudinal fibers and displacement of the neutral line of the cross section under bending are taken into account. The pipe’s wall thickness is assumed to vary smoothly along the contour of the pipe’s cross section, and is a function of an angular coordinate. The solution uses the minimization of the total energy, and is compared to our previous solution for curved pipes with constant wall thickness.

Comparison of Three Methods of MOM, MLFMM and PO/MOM for Simulation of Variable Wall Thickness Radome

2011 ◽  
Vol 268-270 ◽  
pp. 946-949
Author(s):  
Lie Zhang ◽  
Juan Zhang ◽  
Peng Fei Du ◽  
Zuo Jun Li ◽  
Zhu Feng Yue
Keyword(s):  
Wall Thickness ◽  
Method Of Moments ◽  
Variable Thickness ◽  
Fast Multipole Method ◽  
Design Concept ◽  
Physical Optics ◽  
Medium Size ◽  
Method Of Moment ◽  
Variable Wall Thickness ◽  
Variable Wall

a Design Concept of Piecewise Variable Wall Thickness of Radome Is Proposed to Simulate the Radome which Has Variable Wall. the Paper Calculates the Far Field of a Medium-Size Radome in the Case of Piecewise Variable Thickness by Three Methods as Follows: Method of Moment (MOM), Multilevel Fast Multipole Method (MLFMM) and Physical Optics& the Method of Moments (PO/MOM) Respectively. after Comparing the Results, we Find that the PO/MOM Method Have the Superiority in Simulation of Radome’s Electromagnetic because it’s More Accuracy and Less Memory Consuming than the other Two Methods. Also it Proves the Feasibility of the Design Concept of Piecewise Variable Thickness for Radome.

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