
98 Meshless methods and their numerical properties
z
x
x
0.5
0
–0.5
–1
y
–1
–0.5
0
0.5
1
–5
0
5
Φ
x
Variation of the first-order derivative
of shape function in x direction
z
x
x
0.5
0
–0.5
–1
y
–1
–0.5
0
0.5
1
–5
0
5
Φ
x
Variation of the first-order derivative
of shape function in x direction
Figure 3.16 (continued) Shape function and corresponding rst-order derivatives.
(Modied from K.Y. Lam, Q.X. Wang, and H. Li. (2004). Computational
Mechanics, 33, 235–244.)