The weight function is non-zero over a small neighborhood of gI , called the domain of influence of node I. The choice of
weight function wðg gIÞ affects the resulting approximation in EFGM and other meshless methods. Singh et al. [32] has
studied on these weight functions and find that cubicspline weight function gives more accurate results as compared to others.
Therefore, in the present work, a cubicspline weight function [32] has been used.