From: Dafang Wang <dafang.wang@jh...>  20130910 23:04:45

Hi, I am a new user who has been using Libmesh for about 6 months on biomechanical problems. Does anyone know how to set the initial guess for a nonlinear equation by designating a known vector to be the initial guess? I am using the NonlinearImplicitSystem Class in the following manner: NonlinearImplicitSystem system. Vector soln; loop Step 1: // use soln as the initial guess for the system Step 2: system.solve(); Step 3: soln = system.solution(); Step 4: //update system end My goal is to repeatedly solve the nonlinear system, with each iteration using the solution of its previous iteration as the initial guess. I am wondering which particular member functions or member variables I should use. Any comments or suggestions would be greatly appreciated. Thank you very much for your help. Best, Dafang  Dafang Wang, Ph.D. Postdoctoral Fellow Institute of Computational Medicine Hackerman Hall, Room 218 Johns Hopkins University, Baltimore, 21218 http://lagniappe.icm.jhu.edu/~dwang/ 