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The Mechanical Response of the Belt in a Radial Tire
Technical Paper
785085
Sector:
Language:
German
Abstract
The paper presents a belt material model of a radial tire as a
two-dimensional, orthotropic rubber-cord system. The rubber must
absorb the energy developed in the composite material. The rigidity
of the complex body is provided primarily by the cord-foundation
which also must absorb energy developed in the strengthening plies.
The rubber is considered an incompressible body due to its
mechanical response. The simplest cord-strands show a bilinear
behavior; their modulus of elasticity is dependent on their
loading.
The mechanical behavior of the belt forms part of the overall
elastic characteristics of the composite body. The physical
equation of the orthotropic rubber-cord system describes the
relationship between the stresses acting on the material model and
the values of the deformation as a function of the rubber and cord
values. By means of the elasticity equation the material values of
the composite body can be defined and determined. Comparison and
testing of different cord structures of differing materials can be
performed with the material values.