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Dear Frank and users, I want to use "Central Difference integrator" to analyze nonlinear quesions in OpenSees. We konw, for elastic question, the material tangent is constant, and we only need compute the tangent only once if we use "Central Difference integrator". But if we want...

Thanks fmk. It solved my question.

I have built a simple model using CentralDifference to integrator, and it is statically determinate, but the opensees showing error that WARNING: CentralDifference::domainChanged() - assuming Ut-1 = Ut WARNING BandSPDLinLapackSolver::solve() - the LAPACK routines returned 5 WARNING Linear::solveCurr...

Dear fmk, I want to use some features of c++11. So I was trying to use vc2015 to compile opensees, but I was faced with many compiling errors, such as "error LNK2019: unresolved external symbol vsprintf" and "error LNK2001: unresolved external symbol _iob_func". Would you kindly ...