idaholab / mastodon

A MOOSE app for structural dynamics, seismic analysis, and risk assessment.
https://mooseframework.inl.gov/mastodon
GNU Lesser General Public License v2.1
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Enable damping in isolation systems #382

Closed cbolisetti closed 2 years ago

cbolisetti commented 3 years ago

Reason

Damping will help remove some vertical oscillations in isolation systems

Design

Changing stress divergence calcs in isolation systems to account for stiffness damping and HHT. Mass damping can be accounted for through nodal masses when they are assigned to isolators.

Impact

Users will now be able to add block-restricted Rayleigh damping and HHT to isolation systems.