How does NODYNRSP do its thing?

Does anyone know how the NODYNRSP option of the RESVEC command do what it does?

I haven't been able to find any documentation on this detail.

My (wild) guess is a low pass frequency dependent damping is applied to the modes associated with residual vectors to allow them to be suppressed at high frequency but allowed to responded at low frequencies...

Second question on this topic (which is likely related to the first) is why the NODYNRSP option embedded into the RESVEC call. It seems like it could/should be a separate option on top of the RESVEC command.

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0 anthony.carlson over 5 years ago

Don,

Interesting.

So in the context of external super elements the reduced boundary mass matrix (equation 9-30 in the 2019 superelements users guide) are the terms you are discussing zeroing out the Mqt terms for the resvec dofs or the Mqq terms, or both?

And if I wanted to test this, how do I write the reduced boundary Maa matrix to a human readable text file?
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0 anthony.carlson over 5 years ago

Don,

Interesting.

So in the context of external super elements the reduced boundary mass matrix (equation 9-30 in the 2019 superelements users guide) are the terms you are discussing zeroing out the Mqt terms for the resvec dofs or the Mqq terms, or both?

And if I wanted to test this, how do I write the reduced boundary Maa matrix to a human readable text file?
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