Uniform Excitation Pattern

The UniformExcitation pattern allows the user to apply a uniform excitation to a model acting in a certain direction. The resulting load pattern is applied as

\[ P(t) = \ddot{u}_g \mathbf{m} \iota \]

The command is as follows:

Model.pattern(“UniformExcitation”, name, dof, accel)

dof	int	1 corresponds to translation along the global 1 axis 2 corresponds to translation along the global 2 axis 3 corresponds to translation along the global 3 axis 4 corresponds to rotation about the global 1 axis 5 corresponds to rotation about the global 2 axis 6 corresponds to rotation about the global 3 axis
accel	Ref(Path)	acceleration time series
v0	float	initial velocity.
scale	float

NOTES:

1. The responses obtained from the nodes for this type of excitation are RELATIVE values, and not the absolute values obtained from a multi-support case.

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Code Developed by: fmk