Keyword type: model definition, material
This option is used to define a hyperfoam material. There is one optional parameters, N. N determines the order of the strain energy potential. Default is N=1. All constants may be temperature dependent.
The hyperfoam strain energy potential takes the form
Following line for N=1:
Following line for N=2:
Following lines, in a pair, for N=3: First line of pair:
Example: *HYPERFOAM,N=2 0.164861,8.88413,2.302e-5,-4.81798,0.,0.
defines a hyperfoam material with two terms in the series.
Example files: beamhf.