IS-FEM Program

The IS-FEM is an efficient finite element program for inelastic response analysis of structures which is developed on the basis of the Inelasticity-Separated Finite Element Method proposed by professor Gang Li. This algorithm is currently suitable for the analysis of local material nonlinearity problems and the high efficiency stem from the use of Sherman-Morrison-Woodbury formula which can avoid the recalculation and factorization of the global stiffness matrix during iteration process. Note that the current version of the program is only can be used to model the framed structures through three dimensional fibre beam-column element. 

IS-FEM Version Information: IS-FEM1.0. 

Operating Environment: Visual Studio 2010/2013 and Intel Fortran Composer XE 2011/2013.