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Calculation of stiffness & mass matrix

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    • July 18, 2024 at 10:05 am
      dhjang4522
      Subscriber

      Is the shape function for the SOLID187 (10-node tetrahedron) determined solely by the given L1,L2,L3,L4?

      I am trying to calculate the element stiffness and mass matrices using MATLAB, but the error becomes significant as the number of elements increases. Specifically, the mass matrix is calculated using ρ∫N'*N*dV, yet the error remains large. What could be the reason for this? (I have confirmed that the Gauss points are 4 through PRESOL and LOCI)

    • July 23, 2024 at 12:34 pm
      Ashish Khemka
      Forum Moderator

      Hello,

      You will find all information pertaining to SOLID187 here: SOLID187 (ansys.com)

      but I am not sure why the results are not in correlation to MATLAB.

      Regards,

      Ashish Khemka

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