Beam element Indefinite mass matrix fix

MASTmultiphysics / mast-multiphysics

Multidisciplinary-design Adaptation and Sensitivity Toolkit (MAST) - Sensitivity-enabled multiphysics FEA for design

https://www.mast-multiphysics.com

GNU Lesser General Public License v2.1

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Beam element Indefinite mass matrix fix #54

Closed manavbhatia closed 4 years ago

manavbhatia commented 4 years ago

@JohnDN90 identified that the mass matrix for beam element is indefinite. This was found to be due to terms in the mass matrix definition that were erroneously omitted. This PR fixes this issue.