This paper describes a new method for the form-finding of funicular structures in two or three dimensions using a zero-length spring system with dynamic nodal masses. The resulting found geometry consists of purely axial forces under self-weight, with zero bending moment at nodes for both shells and tension net forms. The advantages of this method over known approaches are discussed, with an application on a recent live project also described. A real-time solver using semi-implicit Euler integration with viscous damping is used to achieve system equilibrium. By using a real-time solver, the designer is able to alter the gravitational field or apply new point loads without re-starting the analysis, leading to a interactive experience in generating design options. The successful application of the method on a recent project is also discussed.
|Number of pages||8|
|Publication status||Published - 20 Sep 2011|
|Event||2011 IASS Annual Symposium: IABSE-IASS 2011: Taller, Longer, Lighter - London, UK United Kingdom|
Duration: 20 Sep 2011 → 23 Sep 2011
|Conference||2011 IASS Annual Symposium: IABSE-IASS 2011: Taller, Longer, Lighter|
|Country||UK United Kingdom|
|Period||20/09/11 → 23/09/11|
Harding, J., & Shepherd, P. (2011). Structural form finding using zero-length springs with dynamic mass. Paper presented at 2011 IASS Annual Symposium: IABSE-IASS 2011: Taller, Longer, Lighter, London, UK United Kingdom.