Decoupling Poisson's ratio effect from compression-torsion metamaterial

Thin-Walled Structures, Год журнала: 2025, Номер unknown, С. 112955 - 112955

Опубликована: Янв. 1, 2025

Язык: Английский

---

Novel reinforced wood material with a biomimetic hierarchical square honeycomb structure under quasi‐static loading: Simulation and experimental study

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract This study proposes a novel biomimetic hierarchical square honeycomb structure made from reinforced wood, aiming to address the limitations of traditional structures, such as poor energy absorption after load failure and unstable deformation modes. Inspired by natural materials, design incorporates hollow circular substructures replace solid ribs, optimizing both mechanical performance absorption. Experimental finite element simulations were conducted investigate effects substructure number rib configuration on structural properties while maintaining constant mass. The results demonstrate that (SHH‐C332) exhibits 127% increase in strength, 63.94% higher elastic modulus, an 82.27% improvement compared classic (SH‐C330). Additionally, reveals load‐bearing capacity is maximized when ( N ) ≤2, excessive > 2) lead stress concentration reduced performance. also shows tunable adjusting geometric parameters, making it adaptable for precise engineering requirements. These findings highlight potential structures developing sustainable, lightweight, high‐performance materials applications aerospace, automotive, construction industries. Highlights Biomimetic improves compressive properties. Strength increased structure. Energy improved with optimized substructures. Elastic modulus design. Sustainable wood used lightweight applications.

Язык: Английский

---

Multiscale analysis of elastic properties of 3D-printed carbon fiber-reinforced nylon-based composites: Numerical approach

Composite Structures, Год журнала: 2025, Номер unknown, С. 119158 - 119158

Опубликована: Апрель 1, 2025

Язык: Английский

---

A novel quasi-zero-stiffness metamaterial plate with tunable bandgap

Composite Structures, Год журнала: 2025, Номер unknown, С. 119134 - 119134

Опубликована: Апрель 1, 2025

Язык: Английский

---

Biomechanics and Mechanobiology of Additively Manufactured Porous Load‐Bearing Bone Implants

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 17, 2025

Abstract Given that they can replicate both the biomechanical and mechanobiological functions of natural bone, metal additively manufactured porous load‐bearing bone implants present a significant advancement in orthopedic applications. Additive manufacturing (AM) metals enables precise control over pore geometry, resulting provide effective mechanical support minimize stress shielding. In addition to its benefits, architecture facilitates essential processes, including transmission signals regulate cellular processes such as adhesion, proliferation, differentiation. Before clinical use, should first be engineered achieve comparable elastic modulus native mitigating implant‐induced resorption while promoting tissue regeneration. It is also noteworthy microstructural features these angiogenesis‐a critical process for oxygen nutrient delivery during healing. Despite their potential challenges remain balancing stability applications with biofunctionality integration controlled degradation. This review comprehensively discusses factors influencing design performance implants, highlighting enhance outcomes repair

Язык: Английский

---

An alternating collinear tubular lattice material with enhanced energy absorption

International Journal of Solids and Structures, Год журнала: 2025, Номер unknown, С. 113426 - 113426

Опубликована: Май 1, 2025

Язык: Английский

---

Unraveling the Print–Structure–Property Relationships in the FFF of PEEK: A Critical Assessment of Print Parameters

Polymers, Год журнала: 2025, Номер 17(11), С. 1444 - 1444

Опубликована: Май 23, 2025

Poly-ether ether ketone (PEEK) is a high-performance thermoplastic known for its excellent mechanical properties, making it relevant aerospace and medical applications. Additive manufacturing (AM) represents critical step towards integrating PEEK into these sectors, particularly complex geometries custom parts. However, the properties achieved through AM have not yet reached those obtained via conventional techniques. Recent studies sought to optimize printing parameters bridge this gap, but their findings remain inconsistent difficult generalize—suggesting strong dependence on experimental conditions. This partly due Fused Filament Fabrication of being an emerging technology, with many relying in-house built printers. Moreover, underlying microstructural mechanisms governing performance rarely been explored in depth. In work, we establish clear processing–structure–property relationships by rigorous DoE approach comprehensive characterization. Our results highlight dominant role processing environment near glass transition temperature promoting chain mobility, enhancing amorphous phase ordering, improving performance: crystallinity alone does fully explain behavior additively manufactured PEEK. Further, higher nozzle temperatures lower porosity increase filament bonding, while faster speeds reduce porosity, negatively affecting integrity. The study are generalizable any FFF printer Other materials or technologies out scope work.

Язык: Английский

---

Mechanical Response of Four‐Star‐Honeycomb Hybrid Metamaterial Under In‐Plane Loading

Advanced Engineering Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

This paper focuses on designing and producing a hybrid metamaterial with relative density of at least 0.59 using additive manufacturing. The consists layers four‐star (A) honeycomb (B)‐shaped unit cells. Three configurations (ABA, AABAA, AABB) were 3D printed various layer heights (0.06, 0.10, 0.15, 0.20 mm). quality the samples depends height, lower fewer defects better geometric accuracy. In‐plane compression tests conducted to evaluate mechanical properties. stress‐strain curves exhibited linear plateau densification regions, varying across designs heights. AABB structure, 0.1 0.06‐mm heights, showed highest peak stress, while ABA structure lowest stress. 742 kg/m³, demonstrated potential for large deformation applications. Visual examination revealed distinct distortion patterns in cells during loading, experiencing most significant shape distortion. Overall, this research highlights metamaterials lightweight optimal design manufacturing parameters can be tailored achieve specific properties performance requirements.

Язык: Английский

---

An embedded multi-level finite element method for lattice metamaterials

Thin-Walled Structures, Год журнала: 2024, Номер unknown, С. 112856 - 112856

Опубликована: Дек. 1, 2024

---