Perpustakaan Digital ITB

Origami in engineering is a type of compliant mechanism capable of distributing load and or other mechanical properties by utilizing its inherent geometric properties. It is tunable, scalable, and easy to manufacture properties makes its application vast and well needed in the current industry. This research investigates the mechanical properties of Yoshimura and Kresling (two types of tubular origami patterns) with respect to geometric and material variations. The primary objective is to evaluate the mechanical performance of both patterns under tensile and compressive loads, and to analyze how cross-sectional shape and material selection influence structural stiffness. Through tension and compression experiments, the stiffness and range of motion of the structures are found. This data is further tested through finite element simulation using MERLIN software. Results show that Yoshimura patterns exhibit higher stiffness under tension, while Kresling patterns respond more dynamically under compression. Cross-sectional variations (square, hexagonal, octagonal) significantly impact stiffness, particularly in materials with high elastic modulus. Moreover, vertex geometry influences the range of motion and structural stability. For instance, square Yoshimura specimens made of PLA show a stiffness of 0.73 N/mm, while hexagonal Kresling specimens made of PLA show a stiffness of 0.26 N/mm. In conclusion, the mechanical characteristics of origami structures are highly dependent on their geometric configuration and base material. This study serves as a foundational reference for future origami-based design in engineering applications.