Importing Mass and Stiffness Matrices into HyperMesh for 1D Beam Modeling for static analysis

Ananthan
Ananthan Altair Community Member
edited March 7 in Community Q&A

Hi,

I'm currently working on 1D beam modeling using HyperMesh/HyperWorks, specifically focusing on defining a C-beam element. To streamline the process and ensure accuracy, I'm exploring the possibility of importing existing mass and stiffness matrices generated at various beam sections using external software like VABS.

My goal is to model a rotor blade made of composite material, and instead of manually defining all the sectional properties, I'm interested in understanding if there's a way to import the precomputed mass and stiffness properties into HyperMesh for error-free property definition. 

The existing mass and stiffness matrixes are 6X6. 

Any insights or guidance on this matter would be greatly appreciated.

Thank you!

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Answers

  • Jason_Craanen
    Jason_Craanen
    Altair Employee
    edited May 28

    Hello,

    I would like to paste the answer you got from support here to help others that might need this same question answered.

    we have this example

     

     

    image

     

     

     

    showing example for Euler-Bernoulli-based GENEL vs OS Timoshenko beam. This covers the stiffness matrix.

     

    Attached example compares beam and GENEL models, both 3 elements. In this one, also the mass matrix defined.

    GENEL is super element and cannot be visualized. Therefore, there are also dummy beams with ~zero properties overlaid on top of GENEL's.

    At the beginning, I would experiment GENEL with beam length = 1.0. 

     

    In the examples, beam cross-section has coupling only between shear and bending, but composite beam has more coupling terms.

     

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