Experimental Modal And Analytical Modal Combination Of Complex Modal Synthesis Technology

MSC/NASTRAN is a general finite element analysis software. This paper combines the experimental modal analysis technique with the techniques of analytic modal and component modal synthesis (i.e. external superelement analysis) provided by MSC/NASTRAN to obtain the modal parameters of complex structures. It mainly researches the process of external superelement analysis, required important sentences in MSC/NASTRAN and the method inputting modal test results. A T-kind structure and an aircraft mode, as examples, are researched through experimental modal analysis and component modal synthesis. The results show that the analysis method and the compute programs in this paper are feasible and can meet requirements of engineering application.