Add wriggers-l-shape-dirichlet-values.py in dune-elasticity as well - we...

Add wriggers-l-shape-dirichlet-values.py in dune-elasticity as well - we always took it from the module dune-gfe

.gitignore

@@ -4,3 +4,6 @@
 # Default cmake build directory
 /build-cmake
 
+# ignore Python files
+*.pyc
+

problems/wriggers-l-shape-dirichlet-values.py

+class DirichletValues:
+    def __init__(self, homotopyParameter):
+        self.homotopyParameter = homotopyParameter
+
+    # Deformation of 3d classical materials
+    def dirichletValues(self, x):
+        # Clamp the L-shape in its reference configuration
+        return [x[0], x[1], x[2]]
+
+    # Deformation of Cosserat shells
+    def deformation(self, x):
+        # Clamp the L-shape in its reference configuration
+        return [x[0], x[1], 0]
+
+    # Orientation of Cosserat materials
+    def orientation(self, x):
+        rotation = [[1,0,0], [0, 1, 0], [0, 0, 1]]
+        return rotation