| Title |
A Study on Initial Shape Finding of Membrane Structuresand Cutting Pattern Generation |
| Authors |
Shon Su-Deok ; Jeong Eul-Seok ; An Sang-Gil ; Kim Seung-Deog |
| Keywords |
Membrane Structures ; Shape Analysis ; Equilibrium Analysis ; Double Curved Surface ; Geodesic Line ; Cutting Pattern |
| Abstract |
Membrane structures, a kind of lightweight soft structural system, are many used for large spatial stadium or gymnasium. The material property of the membrane has strong tensional stiffness, but little bending. The design procedure of membrane structures are needed to do shape finding, stress-deformation analysis and cutting pattern generation. In shape finding, membrane structures are unstable structures initially. These soft structures need to be introduced initial stresses because of its initial unstable state, and happen large deformation phenomenon. Also there are highly varied in their size, curvature and material stiffness. So, the approximation inherent in cutting pattern generation methods is quite different.
Therefore, in this study, to find the structural shape after large deformation caused by initial stress, we have done the shape analysis considering geometric nonlinear term. And the geodesic line on surface of initial equilibrium shape and the cutting pattern generation using the geodesic line is introduced. |