PROPER ARRANGEMENT OF REINFORCING RIBS FOR ELIMINATION OF THERMAL DEFORMATIONS IN METALLURGICAL PRODUCTS

2018 ◽  
Vol 16 (3) ◽  
pp. 87-98
Author(s):  
M. E. Matarneh ◽  
F. M. Al Quran ◽  
V. V. Chigarev ◽  
A. V. Loza
Keyword(s):  
Thermal Deformations ◽  
Reinforcing Ribs

Comparison of methods for calculating thermal deformations of screw compressor rotors

2020 ◽  
Author(s):  
R. R. Yakupov ◽  
T. N. Mustafin ◽  
M. S. Khamidullin ◽  
I. G. Khisameyev ◽  
V. A. Alyayev
Keyword(s):  
Screw Compressor ◽  
Comparison Of Methods ◽  
Thermal Deformations

Influence of Thermal Deformations in the Solid Laser Medium on the Emitted Radiation Parameters

2005 ◽  
Vol 219 (8) ◽  
pp. 823-827
Author(s):  
O Donţu ◽  
S Ganatsios ◽  
D Duminica
Keyword(s):  
Laser Beam ◽  
Radial Distribution ◽  
Thermal Deformation ◽  
Processing Parameters ◽  
Beam Intensity ◽  
Laser Medium ◽  
Laser Beam Intensity ◽  
Active Laser ◽  
Thermal Deformations ◽  
Active Laser Medium

The paper presents some remarks about the way in which the thermal deformation in the solid active laser medium influences the radial distribution of the emitted laser beam intensity, implicitly the processing parameters.

Thermal deformations of inhomogeneous elastic plates

1995 ◽  
Vol 18 (6) ◽  
pp. 423-436 ◽  
Author(s):  
Timo Tiihonen ◽  
Reijo Pietikäinen
Keyword(s):  
Elastic Plates ◽  
Thermal Deformations

scholarly journals Thermal deformations in typical maglev guideway structures

1988 ◽  
Vol 21 (3) ◽  
pp. 215-226 ◽  
Author(s):  
T. I. Campbell ◽  
S. W. Siu
Keyword(s):  
Thermal Deformations

scholarly journals Elastic Response of Acoustic Coating on Fluid-Loaded Rib-Stiffened Cylindrical Shells

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Christopher Gilles Doherty ◽  
Steve C. Southward ◽  
Andrew J. Hull
Keyword(s):  
Cylindrical Shell ◽  
Cylindrical Shells ◽  
Coupled System ◽  
Elastic Response ◽  
System Response ◽  
Elastic Cylindrical Shell ◽  
Fluid Environment ◽  
Reinforcing Ribs ◽  
Double Index ◽  
Stress Boundary Conditions

Reinforced cylindrical shells are used in numerous industries; common examples include undersea vehicles, aircraft, and industrial piping. Current models typically incorporate approximation theories to determine shell behavior, which are limited by both thickness and frequency. In addition, many applications feature coatings on the shell interior or exterior that normally have thicknesses which must also be considered. To increase the fidelity of such systems, this work develops an analytic model of an elastic cylindrical shell featuring periodically spaced ring stiffeners with a coating applied to the outer surface. There is an external fluid environment. Beginning with the equations of elasticity for a solid, spatial-domain displacement field solutions are developed incorporating unknown wave propagation coefficients. These fields are used to determine stresses at the boundaries of the shell and coating, which are then coupled with stresses from the stiffeners and fluid. The stress boundary conditions contain double-index infinite summations, which are decoupled, truncated, and recombined into a global matrix equation. The solution to this global equation results in the displacement responses of the system as well as the exterior scattered pressure field. An incident acoustic wave excitation is considered. Thin-shell reference models are used for validation, and the predicted system response to an example simulation is examined. It is shown that the reinforcing ribs and coating add significant complexity to the overall cylindrical shell model; however, the proposed approach enables the study of structural and acoustic responses of the coupled system.

scholarly journals Technological Forecasting of Deformations in Flat Parts

2020 ◽  
Vol 3 (1) ◽  
pp. 1-12
Author(s):  
Tatiana N. Ivanova ◽  
Witold Biały ◽  
Jiři Fries ◽  
Victor Nordin
Keyword(s):  
Expansion Coefficient ◽  
Linear Expansion ◽  
Plate Thickness ◽  
Heat Removal ◽  
Quality Parameters ◽  
Grinding Wheel ◽  
Linear Expansion Coefficient ◽  
Plate Material ◽  
Thermal Deformations ◽  
Geometric Size

AbstractThe deformation of a part occurring in the process of grinding directly influences its exploitation and quality parameters. The instability of shape and size, which occurs due to an imbalance of residual stress, can be the one of the major causes of deformation of a part. The decrease in stress slows down the deformation process. Considering the regularities of heat source intensity dependence on the grinding modes, it can be asserted that with increasing grinding depth and grinding wheel hardness, the value increases and it decreases with a growth in a speed of the part and the use of cooling. The higher the heat removal is and the better lubricant properties of the liquid are, the more significant the decrease in is. Changing these values allows regulation of the residual stresses. As a result of the research on determination of deformations, it is recommended to reduce thermal deformations by considering the geometric size of a plate to be machined, linear expansion coefficient of plate material and an allowance for nonflatness from thermal deformations. The value of nonflatness from thermal deformations is directly proportional to linear expansion coefficient of plate material and its square overall dimensions. At the same time, the value of nonflatness is inversely proportional to the plate thickness.

Photographic follow-up measuring system OSS-50-1300 for measuring thermal deformations of specimens of destructing composites

1983 ◽  
Vol 15 (9) ◽  
pp. 1341-1345
Author(s):  
B. V. Marasin ◽  
A. G. Malyi ◽  
N. A. Fot ◽  
L. I. Gracheva ◽  
V. V. Sinchuk
Keyword(s):  
Measuring System ◽  
Thermal Deformations

Coupling of elastic and thermal deformations I

1958 ◽  
Vol 7 (6) ◽  
pp. 463-475 ◽  
Author(s):  
Gunadhar Paria
Keyword(s):  
Thermal Deformations
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