226 R. Viala et al. Fig. 25.3 Normalized eigenvectors of the eigenmodes modes of interest (blue =0, red =1; left side: top view, right side: back view Table 25.2 Eigenfrequencies of the first three modes of interest of the cello and their evolution for three difference cases: nominal model V1, modified model V2, and modified model V2 without repairs Eigenmode V1 V2 V2_2 T1 [Hz] 191.3 179.4 (−6.2%) 179.4 C2 [Hz] 179 164.2 (−8.2%) 164.5 C3 [Hz] 207 222.1 (+7.3%) 221.8 C4 [Hz] 213 212.2 (−0.4%) 212.1 Relative changes between V1 and V2 are given in brackets Fig. 25.4 Bridge admittance (acceleration) at the bridge with and without cleats and wormholes
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