2 4 6 8 10 2 4 6 8 10 0 20 40 60 80 100 EMA MoGeSeC EMA MoGeSeC 0 10 20 30 40 50 60 70 80 90 100 2 4 6 8 10 2 4 6 8 10 0 20 40 60 80 100 FEA EMA 0 10 20 30 40 50 60 70 80 90 100 Figure 7 – MAC matrix (orthogonality property) Figure 8 – MAC matrix between FEM modes and of MoGeSeC modes for the crankshaft component. MoGeSeC modes for the crankshaft component. Figure 9 – Comparison of the first 7 crankshaft mode shapes between FE model and MoGeSeC reduced modes. CONCLUSIONS The numerical tests performed prove that MoGeSeC technique allows Serep methodology to reach a great numerical stability and a good agreement with the model or the actual object in a short time. MoGeSeC does not require a great computational effort in selecting the master nodes, it only needs information about the geometry and modal behavior of the structure. Such information can be provided by an FE model or by an experimental analysis. Finally, an important task of the proposed approach is its ability to distribute sensor locations and minimize spatial incompleteness of the identified mode-shapes. 290
RkJQdWJsaXNoZXIy MTMzNzEzMQ==