Lastly, convergence studies on the number of symplectic eigenfunctions ðNSÞ are carried out with results shown in Fig. 5.
It is observed that K and G converge to the exact solutions as NS P 10. The FEDSM has a performance of rapid convergence.
Therefore, 20 terms of the symplectic eigenfunctions and d=a ¼ 0:5 are used to calculate the normalized SIFs and ERRs in the
following examples.