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Balloon1D

Uniaxial Balloon Model

Both this model and Balloon3D share the same definitions of parameters. Both models shall yield the same uniaxial behaviour if the same parameter set is used.

Syntax

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material Balloon1D ${1:(1)} ${2:(2)} ${3:(3)} ${4:(4)} ${5:(5 6 7 8)} ${6:(9 10 11 12)} ${7:(13 14 15 16)} ${8:(17 18 19 20)} ${9:(21 22 23 24)} ${10:(25)} ${11:[(26) (27) (28)...]}
# (1) int, unique material tag
# (2) double, elastic modulus
# (3) double, k_r
# (4) double, load reversal memory size
# (5 6 7 8) double, u bound, initial, linear, saturation, rate
# (9 10 11 12) double, fm bound, initial, linear, saturation, rate
# (13 14 15 16) double, fc bound, initial, linear, saturation, rate
# (17 18 19 20) double, am bound, initial, linear, saturation, rate
# (21 22 23 24) double, ac bound, initial, linear, saturation, rate
# (25) double, density
# (26) string, token, one of '-fc', '-ac', '-na', '-nd'
# (27 28) double, saturation, rate

Theory

See Balloon3D for more details.