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I've been trying to model a cantilever elastic beam which is loaded by a moment at its free end. The moment Mc will roll up the beam into a circle. Thus, large displacements are involved. The algorithm fails when the load factor is 0.52 with the convergence problem. I've tried various algorithms and...

To perform a transient analysis, initial conditions are required in order to start step by step time integration. how can I define non-zero initial displacement and/or initial velocity for a particular DOF in my model?

I've been thinking about adding a transient integrator in which the constants c1, c2 and c3 are not double scalars anymore. In fact, they are matrices. Is it possible to overload the addKtToTang, addCtoTang and addMtoTang methods with something like addKtToTang(Matrix *fact), addCtoTang(Matrix *fact...