This problem is too large for the frontal solver. Only contact analysis feature of the nonlinear static is not supported by the Sparse matrix solver. For these types of analyses the user should continue using the Frontal solver. The following results were obtained using sparse matrix solver for a single load case analysis. CPU time is the CPU time used in the equation solver.
Elapse time is the overall time from start to finish.
A new eigenvalue extraction method is introduced in NISA II to replace the current Lanczos method. The method is based on the Block-Lances method. The extraction method will be substantially more efficient than the current Lances method for majority of the problems. The convergence in extracting eigenvalues and eigenvectors is faster. Automatic calculation of the initial small negative shift, for free-free body problems, which allows rigid body modes to be efficiently computed.