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the matrix inversion routine ainv can onlybe used for matrices of order 30 or less

the matrix inversion routine ainv can onlybe used for matrices of order 30 or less

the matrix inversion routine ainv can onlybe used for matrices of order 30 or less

(OP)
I am trying to run a viscoelastic analysis in Abaqus for a steel concrete composite beam. I am defining creep data of concrete by combined test data in viscoelastic property. I am confused about the value of 'js' and I provided value of 1/(1+phi) but Abaqus showed an error that normalized creep data must be greater than 1. Hence I provided it as (1+phi). Now it is again showing an error which states, "the matrix inversion routine ainv can onlybe used for matrices of order 30 or less". The data I provided for 'js' is 42 in number. same for 'jk'. I thought I need to reduce it but that also didn't help. Please suggest some solution.

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