About the LumpedMass Matrix or ConsistentMass Matrix in OpenSees

hubo · Post by **hubo** » Wed Aug 09, 2023 3:53 am

Hello
I am working on seismic analysis of a nonlinear bridge model. As the main vulnerable component of bridge under earthquake, the bridge pylon and girder is beformed by Non-linear Beam-column Element based on flexibility method.
I am wondering can I simulate the elements by Consistent-Mass Matrix(Not Lumped-Mass Matrix by -mass command)?

mhscott · Post by **mhscott** » Wed Aug 09, 2023 6:06 am

The forceBeamColumn / nonlinearBeamColumn element only uses lumped mass in the current implementation

hubo · Post by **hubo** » Wed Aug 09, 2023 9:26 pm

Tanks for your reply.

fefe · Post by **fefe** » Fri Feb 16, 2024 7:47 am

mhscott wrote: ↑Wed Aug 09, 2023 6:06 am The forceBeamColumn / nonlinearBeamColumn element only uses lumped mass in the current implementation

What are the elements to which it is possible to give a distributed mass? (consistent mass)
For example if have a fiber element (C.A. column) it work with cmass?
and elasticbeamelement?

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