Energy Absorption and Stiffness of Thin and Thick-Walled Closed-Cell 3D-Printed Structures Fabricated from a Hyperelastic Soft Polymer.

This study analyses the energy absorption and stiffness behaviour of 3D-printed supportless, closed-cell lattice structures. The unit cell design is bioinspired by the sea urchin morphology having organism-level biomimicry. This gives rise to an open-cell lattice structure that can be used to produce two different closed-cell structures by closing the openings with thin or thick walls, respectively.

FDM Layering Deposition Effects on Mechanical Response of TPU Lattice Structures.

Nowadays, fused deposition modeling additive technology is becoming more and more popular in parts manufacturing due to its ability to reproduce complex geometries with many different thermoplastic materials, such as the TPU. On the other hand, objects obtained through this technology are mainly used for prototyping activities. For this reason, analyzing the functional behavior of FDM parts is still a topic of great interest.

Optimal Design of Shape Memory Alloy Compositeunder Deflection Constraint.

Shape-adaptive or morphing capability in both aerospace structures and wind turbineblade design is regarded as significant to increase aerodynamic performance and simplifymechanisms by reducing the number of moving parts. The underlying bistable behavior ofasymmetric cross-ply composites makes them a suitable candidate for morphing applications. Todate, various theoretical and experiential studies have been carried out to understand and predictthe bistable behavior of asymmetric laminates and especially the curvature obtained in their stableconfigurations.