One-DOF Superimposed Rigid Origami with Multiple States

Area of Science:

• Engineering
• Materials Science
• Robotics

Background:

• Origami-inspired engineering is crucial for developing advanced self-folding structures.
• Current methods often rely on single-structure bespoke patterns or complex universal patterns.
• A need exists for more versatile and controllable self-folding mechanisms.

Purpose of the Study:

• To present a new approach for superimposing multiple distinct, rigid-foldable origami crease patterns onto a single sheet.
• To demonstrate the kinematic independence and single degree-of-freedom (1-DOF) mobility of each superimposed pattern.
• To explore novel engineering design possibilities enabled by this technique.

Main Methods:

• Introduction of the 'cross-crease vertex' configuration.
• Kinematic analysis to prove the existence of two independent 1-DOF rigid-foldable states within the cross-crease vertex.
• Superimposition of multiple distinct crease patterns on a single sheet while preserving kinematic independence.

Main Results:

• Demonstrated that the cross-crease vertex enables two independent 1-DOF rigid-foldable states.
• Successfully superimposed multiple distinct crease patterns on one sheet, maintaining individual kinematic control.
• Enabled compact folding of non-flat-foldable structures and sequent folding origami.

Conclusions:

• The proposed method significantly expands the design space for origami-inspired engineering.
• This approach facilitates the creation of complex self-folding structures with sequential and independent folding capabilities.
• The findings pave the way for advanced applications in robotics, deployable structures, and adaptive materials.