On the snap-back behavior of a self-deploying antiprismatic column during packing

• Published in: Engineering structures Vol. 50; pp. 74 - 89
• Main Authors: Friedman, Noémi, Weiner, Mihály, Farkas, György, Hegedűs, István, Ibrahimbegovic, Adnan
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 01.05.2013; Elsevier
• Subjects: Antiprismatic structure; Applied sciences; Buildings. Public works; Column packings; Columns (structural); Computation methods. Tables. Charts; Computer simulation; Deployable structure; Exact sciences and technology; Geometrical instability; Hoops; Instability; Masts; Nonlinear analysis; Snap-back behavior; Softening; Stresses. Safety; Structural analysis. Stresses; Struts; Snap-back behavior; Deployable structure; Geometrical instability; Nonlinear analysis; Antiprismatic structure; Structural design; Compressibility; Verification; Geometry; Mast; Truss structure; Instability; Numerical simulation; Behavior; High rise building; Folding
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2012.12.035

► The force–displacement diagram of the antiprismatic mast was derived. ► The typical packing path is not uniform, the segments close in a random order. ► The serial connection of softening units leads to a snap-back phenomenon. ► Packing the mast by end compression manifests multiple internal snap-through points. ► Smooth packing of the mast needs multi-controlled packing. This paper deals with the axial folding of an antiprismatic self-deployable mast rendered packable by stretchable hoop strut circles. The main novelty pertains to an interesting kinematic-mechanical softening phenomena, related to the serial connection of packable segments. The softening in this case occurs as the consequence of geometric instabilities arising during force controlled packing sequence. The typical equilibrium path in the mast packing sequence is characterized by a snap-back phenomenon. Moreover, internal snap-back of the structure occurs even with a smooth displacement control at the top nodes. The snap-back phenomena of this kind are here studied analytically for a simpler case of a single element and also by using numerical simulations for more complex case of the complete deployable structure.