| Title |
The Shape Finding Analysis of Tension Membrane Structures by using Line Element |
| Authors |
Han Sang-Eul ; Lee Kyung-Soo ; Lee Kap-Soo |
| Keywords |
Tension Membrane Structure ; Shape Finding ; Force Density method ; Line Element Replacing Technique ; Equally Stressed Surface |
| Abstract |
The purpose of this study is to show the numerical method to determine the initial surface shape of membrane structures by using replacing technique from 4-node membrane element to line element. Tension structures such as fabric membrane structures and cable-net are stabilized by their initial prestress and boundary conditions. The process to find initial structural overall shape of this structures produced by initial prestress is called as the shape finding or shape analysis. One of the most important factor for the design of membrane structures is to search initial smooth surface, because unlike steel or concrete building elements which resist loads in bending, all tension forces are carried through the surface by membrane stress or cable tension. To obtain the initial shape in large deformation analysis, the 4-node membrane element is idealized to 4 line element using a technique with Force-Density method. and that results are compared with the theoretical value of??well-known equally stressed surface |