
108 Meshless methods and their numerical properties
distance d
min
between the interpolation point and its neighboring points,
where d
min
is determined by the node distribution. Therefore, when the node
distribution remains unchanged, the interpolation domain is directly related
to β. Theoretically, the larger β is good for the computed results. However,
if the interpolation domain becomes larger, more eld nodes are required
for the interpolation, and the dimension of the interpolation matrix will be
enlarged. In addition, increasing the interpolation domain also enlarges the
band width of the nal stiffness matrix. As a result, a larger i ...