Long span structures like space-structures have instability phenomenon, jump buckling or bifurcation. And these instability phenomenon responds very sensitivity, depend on the initial condition. In this study, define the 1-degree of freedom space structure and when model has beating load, analysis critical load of model using 3D contour map for load, variable , displacement in the axial. The analysis results, when  is 1.0, is able to see the lowest critical load and the resonance phenomenon.

• 이돈우(한국기술교육대학교 창의융합공학협동과정, 박사과정) | Lee, Don Woo
• 손수덕(한국기술교육대학교 건축공학과, 연구교수) | Shon, Su Deok 교신저자
• 이승재(한국기술교육대학교 건축공학과, 교수) | Lee, Seung Jae