“…The bottom surface of the wall is clamped. The first six natural frequencies computed by using structured (476 elements) and unstructured (239 & 476 elements) meshes are compared in Table 7 with those from the numerical solutions based on the FEM (Gu and Liu, 2001), the MLPG (Gu and Liu, 2001), the MK (Bui et al, 2011a,b), the SFEM (Dai and Liu, 2007), and the BEM (Brebbia et al, 1984). The corresponding eigenmodes of a shear wall are depicted in Fig.…”