Haupt-Sedlan branch definition

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The Haupt-Sedlan branch, is a component of an elastomeric damper model.


  1. The Haupt-Sedlan branch is defined by the following parameters.
    1. An elastic spring of stiffness constant kv > 0.
    2. Material constants zmax, zmin, and zq.
    3. Optionally, material constants ζ and ξ can be defined. If ζ = 0 the model degenerates and the internal state becomes a constant, z = zmax. If both ζ = 0 and ξ = 0, the model further degenerates and becomes identical to the Maxwell fluid model. (Default values: ζ = 0, ξ = 0.)
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