scholarly journals Discussion: “The Problem of Minimizing Stress Concentration at a Rigid Inclusion” (Wheeler, L., 1985, ASME J. Appl. Mech., 52, pp. 83–86)

1986 ◽  
Vol 53 (1) ◽  
pp. 230-231
Author(s):  
G. S. Bjorkman ◽  
R. Richards
Keyword(s):  
Stress Concentration ◽  
Rigid Inclusion

The Problem of Minimizing Stress Concentration at a Rigid Inclusion

1985 ◽  
Vol 52 (1) ◽  
pp. 83-86 ◽  
Author(s):  
L. Wheeler
Keyword(s):  
Stress Concentration ◽  
Variational Problem ◽  
Plane Strain ◽  
Rigid Inclusion ◽  
Elastic Matrix ◽  
Optimum Shape ◽  
Plane Strain Problem ◽  
Elementary Problem ◽  
Conventional Methods

With the objective of minimizing stress concentration, the plane-strain problem of the optimum shape for a rigid inclusion in an elastic matrix of unbounded extent is investigated. It is shown rigorously that the underlying variational problem is reducible to a more elementary problem which can be solved by conventional methods to arrive at the optimum shape, which is a suitably proportioned ellipse.

A New Type of Precision Tire

1988 ◽  
Vol 16 (4) ◽  
pp. 200-207
Author(s):  
O. B. Tretyakov
Keyword(s):  
Stress Concentration ◽  
Failure Rates ◽  
Stress Strain ◽  
Radial Tire ◽  
Resonance Effects ◽  
Precision Stage ◽  
New Type ◽  
Degree Of Order

Abstract A process is suggested for improving the rubber-cord composite in a radial tire through precision stage-by-stage molding of its parts. This starts by casting an inner elastomeric envelope of the carcass from a liquid oligomer mix. The full molding technology uses acoustic and resonance effects to optimize the degree of order of the structure and of rubber uniformity. The resultant precision tires should have a higher degree of order of both macro- and microstructure than do present commercial tires. Reduced stress concentration in locations that have high failure rates in commercial tires are considered. A new theory, CSSOT, is used for optimizing tires from results of stress-strain cycles.

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