Yeoh
Regularized Yeoh Material For Compressible Rubbers
The following strain energy density is used.
where and are material constants. and are reduced invariants of the right Cauchy-Green deformation tensor.
Syntax
material Yeoh (1) (2...)
# (1) int, unique material tag
# (2...) double, material constants with possible density
Remarks
The above command takes input list of arbitrary length (, excluding tag).
If the number of double inputs is odd, the last one is interpreted as density.
If the number of double inputs is even, the density is assumed to be zero.
The first half of double inputs is read as and the second half .
Examples
For , let and , the strain energy density is
The following command shall be used.
material Yeoh 1 20 4000
If density is nonzero, say for example , then the following command shall be used.
material Yeoh 1 20 4000 1E-4
For , let , , , , and , the strain energy density is
The following command shall be used.
material Yeoh 1 20 30 40 2000 3000 4000
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