Study on the Mechanical Behavior of a Bistable Beam under Third-Order Mode Deformation

Theoretical and Applied Mechanics Letters, Journal Year: 2025, Volume and Issue: unknown, P. 100595 - 100595

Published: April 1, 2025

Language: Английский

Lightweight 3D Hierarchical Metamaterial Microlattices

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Hierarchical auxetic metamaterials are a class of materials which characterized by multi‐tiered architecture and have the capability exhibiting enhanced mechanical properties in comparison to their single‐geometry counterparts. In this work, three distinct new classes hierarchical designed incorporating cubic crystal lattice geometries, namely, Body‐Centred Cubic (BCC), Face‐Centred (FCC) Tetrahedral (TC) proposed into 3D rotating cube structures. Through introduction hierarchy, these relatively dense rendered lightweight, through volume fraction reduction over 90% majority cases from full‐block (FB) counterparts, while retaining original capabilities. These systems also demonstrated possess ability exhibit wide range stiffnesses Poisson's ratios, including giant negative values, as well superior stiffness/density ratios making them ideal for implementation lightweight applications. Furthermore, two‐photon lithography 3D‐printer is used fabricate structures at microscale test in‐situ. The results obtained provide clear comprehensive evidence improvement imparted hierarchy advantages using method design unit

Language: Английский

Foamed cementitious composites with 3D-printed auxetic lattice reinforcement: enhancing static and cyclic performance

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112614 - 112614

Published: May 1, 2025

Language: Английский