In the latest published study, the authors examined the unchanging features of Miura-origami designs. This is because their availability majorly in foldability is the origin of continued attraction and admiration. Therefore, the experts decided to examine mechanical performance when 3D printed.
An old Japanese art that is also the root of reverence and attraction across the world, origami is gaining popularity in engineering apps. This is because of its ability in aerospace, robotics, energy and more. Another study has also evaluated the capacity for energy intake machines such as automotive collision cases.
There is some prior experience of how Miura-Ori compositions work under compacting load. But this research examines the mechanical features of column formations.
“The Miura-Ori pattern is constructed with four repeating parallelograms panels which are arranged along the alternating mountain and valley folds as shown in figure 1. The size of each parallelogram for all specimens were kept constant where b = 11 mm and c = 8.66 mm. In this study, the Miura origami column was designed with three folding angle variation (θ = 70o , 90o , 110o ) and two thickness variation (t = 1 mm and 2 mm).”
Additive manufacturing specimens for the analysis study with PLA, the authors evaluated variations. This is with both aspects of folding and barrier breadth of prints. Next, they looked at the energy absorption capacity as well. Samples consisted of three films with condensation testing carried out. The data was recorded later on about displacement and load curves.
The experts found out that they were able to make the structure stronger by raising the design’s folding angle. They discovered that although a low peak force was needed for better absorption of energy a high midpoint crushing force was also needed.
“However, due to its geometric constraint, the result showed that the wider folding angle could reduce the energy absorption capacity of the structure,” reasoned the experts.
“Finally, the structure with 2 mm wall thickness exhibits higher yield stress, compressive modulus, and energy absorption capacity compared to the 1 mm structure. As a future work, the development of finite element model (FEM) to understand comprehensively the behavior of Miura-Ori column structure will be done.” They said.