A simple technique for controlling element distortion in dynamic relaxation form-finding of tension membranes

This paper discusses a simple technique for controlling mesh distortion during the form-finding of membranes when using dynamic relaxation. By simply introducing artificial truss members, that have viscosity but no elasticity, between nodes in a triangular mesh, forces can be generated that restrain the tendency of the mesh to distort. The result is a form-finding solution that prevents collapse of elements and maintains a mesh density that is suitable for subsequent live load analysis.