A spring element applied to a selection of faces will have a single spring with the 7 N/mm stiffness. A set of either rigid or deformable Constraint Elements will spider out from a pilot node at the centroid of the selected faces to all the nodes of those faces. The other end of the spring might be applied to a different selection of faces or be connected to ground. In either case, there is a single pilot node for the other end of the spring.