Singularity of Electromechanical Coupling Field in Piezoelectric Composite Junctions

Table 2

The first four singularity orders of piezoelectric composite material wedge junction with interval segmentation number N, when .

N
10	−0.34958611	−0.022406747	0.62279008–0.38780841i	0.6227900 + 0.387808418i
20	−0.34989329	−0.022582134	0.62231249–0.387750664i	0.62231249 + 0.387750664i
40	−0.34997618	−0.022601267	0.62225081–0.38760694i	0.62225081 + 0.38760694i
80	−0.34998674	−0.022600726	0.62224740–0.38759404i	0.62224740 + 0.38759404i
Ref. [15]	−0.34998	−0.0226004	—	—

Note: is the imaginary number.