Boundary Element Methods–Numerical Implementation - The Boundary Element Method with Programming - page 152

K

R

P i

3

7

[

6

4

L [

L K

2

8

5

1

Figure 6.13 Two-dimensional isoparametric element

[

7

[

7

4 4

3

3

[

2 1

8

K

6 8

6

[

K K

2

1

P i

P i

5

K

5

2

2

1 1

P i

P i

7

7

4

4

3

3

K

2 K

2 K

[

8 8

6

[

6

K

1

1

5 5

2

2

1

[

1

[

Figure 6.14 Sub-elements for numerical integration when P i is a corner node of element