Biomedical Engineering Reference
In-Depth Information
Table 17.2 Integration points in the square and associated weight
factors.
n
int
point
location of the integration points
W
i
ξ
η
9
1
−0.7745966692
−0.7745966692
0.3086420047
2
0.7745966692
−0.7745966692
0.3086420047
3
0.7745966692
0.7745966692
0.3086420047
4
−
0.7745966692
0.7745966692
0.3086420047
5
0
−
0.7745966692
0.4938271818
6
0.7745966692
0
0.4938271818
7
0
0.7745966692
0.4938271818
8
−
0.7745966692
0
0.4938271818
9
0
0
0.7901234686
4
7
3
η
ξ
8
9
6
1
5
2
Figure 17.10
Position of the integration points in the square.
2
1
λ
2
3
1
0
0
1
λ
1
Figure 17.11
Mapping of triangle in a
λ
1
,
λ
2
-coordinate system.
