초기불완전성을 고려한 단층래티스돔의 좌굴특성

초록

Many studies showed that small imperfections can also have a considerable influence on the behaviour of structures. Especially, in Single-Layer Latticed Domes, initial imperfection occurred by human error and construction error is very important to the buckling load. The definition of imperfection is that a node of structure shifts from prefect condition. For example, in the cse of truss structures, imperfections are represented by shifting the location of nodal points relative to the position in which they would be for a perfect structure. This papre uses Arc-length Method in nonlinear iteration analysis, choosing stardome, in which many studies have been accomplished, as a model. The results of analysis show that initial imperfercion can reduce the buckling load of structures.