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Yasutaka Satou and Hiroshi FuruyaInterval of wrapping fold wrinkle [mm]1110987654系 Exp.(cl, 列 1st round)系 Exp.(cr, 列 1st round)系 Exp.(cl, 列 2nd round)系 Exp.(cr, 列 2nd round)系 Exp.(cl, 列 3rd round)系 Exp.(cr, 列 3rd round)系 Theory(a=0.57mm)列0 0.5 1 1.5 2 2.5Tensile force, T[N]Interval of local buckling [mm]4035302520151050系 Exp.(cl) 列 1系 Exp.(cr) 列 2系 FEM(cl) 列 3系 FEM(cr) 列 4Theory(a=0.57mm)系 列 50 50 100 150Diameter of center hub, d [mm]Figure 7: Effects of tensile forceFigure 8: Effects of diameter of center hubThe experimental data indicated that the interval became smaller as the tensile forcewas increased, and was almost proportional to the diameter of the center hub. In thetheoretical analysis, a one-dimensional wrapping model was introduced to examine themechanics of the local buckling. The dominant parameters for the condition for the localbuckling, which were expressed by the tensile force, the membrane thickness, and theradius of the center hub. Also, the experimental data were qualitatively expressed by theone-dimensional wrapping model.REFERENCES[1] Furuya, H. Mori, O. Sawada, H. Okuizumi, N. Shirasawa, Y. Natori, M. C. Miyazaki,Y. and Matsunaga, S. Manufacturing and Folding of Solar Sail ”IKAROS”. AIAA2011-1967. CD-ROM Proc. 52th AIAA/ASME/ASCE/AHS/ASC Structures, StructuralDynamics and Materials Conference. (2011) :1–4.[2] Guest, S.D. and Pellegrino, S. Inextensional Wrapping of Flat Membranes. FirstInternational Conference on Structural Morphology. (1992) :203–215.[3] Timoshenko, S. and Young, D. H. Engineering Mechanics. McGraw-Hill, (1956).[4] ABAQUS user’s manual, Ver. 6.8, ABAQUS Inc., (2008).[5] Satou, Y. and Furuya, H. Mechanical Properties of Wrapping Fold Wrinkles inLarge Space Membrane. 2011-c-32, CD-ROM Proc., 28th International Symposiumon Space Technology and Science. (2011) :1–6.9635