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ERROR: Error on Jacobi solver: matrices are not positive definite

When starting the elastic analysis of a model with a dynamic load, the error below appears:

ERROR: Error on Jacobi solver: matrices are not positive definite.
with Declarations4.Solvers.EigenValuesSolver.Jacobi(SymmetricDenseMatrix& K, SymmetricDenseMatrix& M, TMtx& Q, TVec& D)

Solution

  • Verify the stiffness properties of the elements: check if the sections and material properties are well defined. If an element has no stiffness, it shouldn’t be modelled in Diamonds.

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