ktot
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kA
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kL
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N/(m⋅m)
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Ftot
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FA
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N/m2
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FL
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For Total spring constant and Total force as function of extension, enter the Total mass m of the thin elastic layer.
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For Spring constant per unit area and Force per area as function of extension, enter the Mass per unit area ρA of the thin elastic layer.
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For Spring constant per unit area and Force per area as function of extension, enter the Mass per unit length ρL of the thin elastic layer.
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For Use material data, enter the Density ρ of the thin elastic layer. Either use the value From material or enter a User defined value or expression. In order to use From material, you must have assigned a material to the selected boundaries.
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For Scalar (Same for all components) enter a single Loss factor for spring ηs which is used to multiply all values of the spring matrix or spring force vector.
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For Individual components select Isotropic, Diagonal, Symmetric, or Full and enter values or expressions in the table for the Loss factor for spring ηk or ηf based on space dimension. The loss factors act on the corresponding components of the spring matrix or spring force vector. If you select Isotropic, the effect is the same as when you select Diagonal and enter the same value for all diagonal elements.
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dA
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dtot
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N⋅s/m
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dL
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