Variational equations of the thermodiffusion of deformable thin shells with a finite shear stiffness

1983 ◽  
Vol 19 (2) ◽  
pp. 162-166
Author(s):  
R. N. Shvets ◽  
M. S. Ravrik
Keyword(s):  
Shear Stiffness ◽  
Thin Shells ◽  
Variational Equations ◽  
Finite Shear ◽  
Finite Shear Stiffness

Study of free vibrations of flexible shells with finite shear stiffness

1995 ◽  
Vol 31 (4) ◽  
pp. 265-270
Author(s):  
V. A. Krys'ko ◽  
S. P. Pavlov ◽  
I. F. Sytnik
Keyword(s):  
Shear Stiffness ◽  
Free Vibrations ◽  
Finite Shear ◽  
Finite Shear Stiffness ◽  
Flexible Shells

Analysis of multilayered orthotropic shells of revolution with finite shear stiffness

1988 ◽  
Vol 24 (11) ◽  
pp. 1055-1059
Author(s):  
A. O. Rassakazov ◽  
V. S. Karpilovskii ◽  
V. I. Kosenko ◽  
N. G. Kharchenko
Keyword(s):  
Shear Stiffness ◽  
Shells Of Revolution ◽  
Finite Shear ◽  
Finite Shear Stiffness ◽  
Orthotropic Shells

On the motion of comet P/d’Arrest

1974 ◽  
Vol 22 ◽  
pp. 145-148
Author(s):  
W. J. Klepczynski
Keyword(s):  
Equations Of Motion ◽  
Variational Equations ◽  
Partial Derivatives

AbstractThe differences between numerically approximated partial derivatives and partial derivatives obtained by integrating the variational equations are computed for Comet P/d’Arrest. The effect of errors in the IAU adopted system of masses, normally used in the integration of the equations of motion of comets of this type, is investigated. It is concluded that the resulting effects are negligible when compared with the observed discrepancies in the motion of this comet.

Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part IV: Laboratory Measurement of Mechanical Properties and Mechanical Actions of Tires Relating to Treadwear

1986 ◽  
Vol 14 (4) ◽  
pp. 264-291
Author(s):  
K. L. Oblizajek ◽  
A. G. Veith
Keyword(s):  
Mechanical Properties ◽  
Shear Stress ◽  
Contact Zone ◽  
Flexural Rigidity ◽  
Comprehensive Evaluation ◽  
Shear Stiffness ◽  
Shear Stresses ◽  
Lateral Shear ◽  
Band Bending ◽  
Tread Rubber

Abstract Treadwear is explained by specific mechanical properties and actions of tires. Rubber shear stresses in the contact zone between the tire and the road become large at large slip angles. When normal stresses are insufficient to prevent sliding at the rear of the footprint, wear occurs at a rate that depends on test severity. Two experimental approaches are described to relate treadwear to tire characteristics. The first uses transducers imbedded in a simulated road surface to obtain direct measurements of contact stresses on the loaded, freely-rolling, steered tires. The second approach is developed with the aid of a simple carcass, tread-band, tread-rubber tire model. Various tire structural configurations; characterized by carcass spring rate, edgewise flexural band stiffness, and tread rubber shear stiffness; are simulated and lateral shear stress response in the contact zone is determined. Tires featuring high band stiffness and low carcass stiffness generate lower lateral shear stress levels. Furthermore, coupling of tread-rubber stiffness and band flexural rigidity are important in determining level of shear stresses. Laboratory measurements with the described apparatus produced values of tread-band bending and carcass lateral stiffness for several tire constructions. Good correlation is shown between treadwear and a broad range of tire stiffness and test course severities.

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