A new form of pantographic structures

Arash Osmani¹ Mohammad Reza Matini² Yaser Shahbazi³

1) Young Researchers and Elite Club, Boukan Branch, Islamic Azad University, Boukan, Iran
2) Assistant Professor of Architecture Engineering, Faculty of Architecture, College of Fine Arts, University of Tehran, Iran
3) Assistant Professor of Smart Structure and Architectural Technology, Architecture and Urbanism Department, Tabriz Islamic Art University, Tabriz, Iran

Publication : The 4th International Congress On Civil Engineering, Architecture & Urban Development(4icsau.ir)
Abstract :
A pantograph is a foldable structure which consists of scissor link units. A unit consists of two bars elements which are capable of rotating about their intermediate pivot node. The pantographic structures are generally utilized in flat, cylindrical, and spherical deployable structure and it not used in anticlastic structure like hyperbolic parabolic (HP) structure. The HP surface may form when a convex parabolic goes on the length of concave ones with the same curvature. On the other hands, the hyperbolic surface can be constructed using two families of mutually skew lines in which the lines in each family are parallel to a common plane, but not to each other. In this paper, the creation of HP surface with pantographic structure is presented. The creating a HP pantographic structure is demonstrated in three methods including: a) two border scissors; b) four border scissors; c) All-scissor HP Pantographic Structures.
Keywords : Pantographic Deployable Structure Hyperbolic Paraboloid (HP) Surface scissor link units.