Search found 3 matches

by thomasJacob
Fri Apr 03, 2020 1:21 am
Forum: OpenSees.exe Users
Topic: Convergence Problem in large displacements in Corotational framework
Replies: 0
Views: 521

Convergence Problem in large displacements in Corotational framework

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...
by thomasJacob
Sat Sep 30, 2017 5:12 am
Forum: OpenSees.exe Users
Topic: defining initial conditions for transient analysis
Replies: 1
Views: 613

defining initial conditions for transient analysis

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?
by thomasJacob
Fri Sep 08, 2017 7:40 am
Forum: Framework
Topic: Adding a new integrator type
Replies: 1
Views: 1216

Adding a new integrator type

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...