nRigid and Deformable only applies to a Spring. It doesn't apply to Elastic Support. Elastic Support is like Deformable in that no extra stiffness is added to the model in addition to the spring rate. nElastic Support is simply a a spring rate per unit area. If you had a face with an area of 16 mm^2 and you wanted a spring rate for the whole face of 2 N/mm then you would use an elastic support with a spring rate of 32 N/mm^3. If you edit the geometry and cut the face area in half, the elastic support will end up being equivalent to a single spring of 4 N/mm.nHere is a good example of an elastic support: