26 Finite Element Model Updating of the UCF Grid Benchmark Connections Using Experimental Modal Data 259 0 12 2 11 4 10 9 6 8 8 Updated Model-MAC values 12 7 Experimental Mode number 11 10 10 6 9 5 Analytical Mode number 8 7 4 6 5 3 4 3 2 2 1 1 0 2 12 4 6 11 8 10 10 Updated Model-MAC values 9 8 12 7 Experimental Mode number 10 11 6 9 5 Analytical Mode number 7 8 4 5 6 3 3 4 2 2 1 1 0 0.2 12 0.4 11 0.6 10 0.8 9 1 8 7 Experimental Mode number 6 Updated Model-MAC values 5 4 3 11 12 Analytical Mode number 9 10 2 6 7 8 5 1 2 3 4 1 0 0.2 12 11 0.4 10 0.6 9 0.8 8 1 7 Updated Model-MAC values Experimental Mode number 6 11 12 5 9 10 Analytical Mode number 4 7 8 3 5 6 4 2 2 3 1 1 Case 1 Case 2 Case 3 Case 4 Fig. 26.9 MAC value plots of the four cases defined in Table 26.2 Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 Node 7 Node 8 Node 9 Node 10 Node 11 Node 12 Node 13 Node 14 13 5 1 2 3 4 14 7 8 15 16 17 18 19 6 9 10 11 12 Fig. 26.10 The UCF Grid with partial fixity springs for two groups of connections
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