Multi-level substructuring and its implementation in programming

With the development of the finite element method, FEM, increasing complex structures are being studied and the number of simultaneous equations to be processed is considerable. For many such complex structures, CPU-time, memory storage and data preparation can be reduced by means of multi-level substructuring. Multi-level substructuring and its implementation in computer software are the subject of this paper. With the program developed by authors, any-level of substructuring problem can be conveniently solved.