Table 6 Example trimmed patch: shape function values \(N_i(\xi ,\eta )\) for the integration points \(s_{19-21}\)

(a) Point s19

   0.1303

0.3905

0.2924

   0.0283

0.0849

0.0636

   0.0015

0.0046

0.0034

(b) Point l20

   0.0255

0.1203

0.1419

   0.0440

0.2079

0.2452

   0.0190

0.0898

0.1059

(c) Point l21

   0.0010

0.0061

0.0090

   0.0141

0.0838

0.1241

   0.0485

0.2874

0.4256