One-DOF Superimposed Rigid Origami with Multiple States.
Origami-inspired engineering design is increasingly used in the development of self-folding structures. The majority of existing self-folding structures either use a bespoke crease pattern to form a single structure, or a universal crease pattern capable of forming numerous structures with multiple folding steps. This paper presents a new approach whereby multiple distinct, rigid-foldable crease patterns are superimposed in the same sheet such that kinematic independence and 1-DOF mobility of each individual pattern is preserved. This is enabled by the cross-crease vertex, a special configuration consisting of two pairs of collinear crease lines, which is proven here by means of a kinematic analysis to contain two independent 1-DOF rigid-foldable states. This enables many new origami-inspired engineering design possibilities, with two explored in depth: the compact folding of non-flat-foldable structures and sequent folding origami that can transform between multiple states without unfolding.
School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.
Xiang
X
Liu
School of Civil Engineering, University of Queensland, St Lucia, QLD 4072, Australia.
Joseph M
JM
Gattas
School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.|Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin 300072, China.
Yan
Y
Chen