Disclosed is a method of designing rubber composite executed as follows.
A shape of the rubber composite, a shape of the each part (i) constituting the
rubber composite and physical properties of a rubber material used for each part
(i) are tentatively selected respectively. Thereafter, the rubber composite is
divided into many finite elements, and strain in each element is calculated by
the finite element method to obtain maximum principal strain (i)max
of the elements in each part (i). Then, the tentative selections of the shape of
the rubber composite, the shape of each part (i) and the physical properties of
the rubber material, and the calculations by the finite element method are repeated
until an allowance ratio Sia calculated as a ratio of strain (i)b
at break to the maximum strain (i)max becomes
equal to a specified reference allowance ratio S0 or higher in all of
the parts (i). The shape of the rubber composite, the shape of each part (i) and
the physical properties of the rubber material are thus determined.
