Results 121 to 130 of about 6,783 (230)

Anticlastic Curvature and Material Freedom

physica status solidi (b), EarlyView.
Anticlastic curvature occurs in bent bars for positive Poisson's ratio; synclastic curvature occurs for negative Poisson's ratio provided the material is homogeneous and elastic. Some planar negative Poisson's ratio materials exhibit anticlastic saddle curvature rather than convex curvature in bending due to effects of 3D structure.
Roderic Lakes
wiley   +1 more source

Evaluation of the Orthotropic Behavior in an Auxetic Structure Based on a Novel Design Parameter of a Square Cell with Re-Entrant Struts. [PDF]

Polymers (Basel), 2022
Valle R, Pincheira G, Tuninetti V, Garrido C, Treviño C, Morales J.   +5 more
europepmc   +1 more source

Parametric optimization of selected auxetic structures

Multiscale and Multidisciplinary Modeling, Experiments and Design
AbstractAuxetic materials exhibit an interesting, counterintuitive behavior—when subjected to uniaxial tension, they stretch laterally, and when uniaxially compressed, they shrink laterally. In contrast to conventional materials, in auxetics, the value of Poisson’s ratio is negative.
Maciej Zawistowski, Arkadiusz Poteralski
openaire   +1 more source

Negative Stiffness Induced and Controlled by Constriction

physica status solidi (b), EarlyView.
Structures with negative stiffness can be stabilized by constriction of external displacement. Furthermore, constriction can make a conventional positive stiffness material exhibit negative stiffness, either bidirectional or unidirectional (shown in the figure).
Elena Pasternak, Arcady V. Dyskin
wiley   +1 more source

Computational Mechanics Model to Evaluate the Structural Maintenance of Catenated Hydrogen‐Bonded Organic Frameworks

Small, EarlyView.
This study presents a computational framework treating crystalline HOFs as adaptive atomic‐scale interfaces. Catenated HOFs preserve lattice stability under load while enabling auxetic deformation and reversible nonlinearity. The results provide direct evidence that supramolecular interactions govern macroscopic resilience and structural adaptability ...
Byeonghwa Goh, Joonmyung Choi
wiley   +1 more source

Mechanical Properties of Architected Polymer Lattice Materials: A Comparative Study of Additive Manufacturing and CAD Using FEM and µ‐CT

Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker, Thierry Roland, Damien Favier, Antoine Egele, Michael Heymann, Cosima Stubenrauch   +5 more
wiley   +1 more source

Advancing auxetic materials: Emerging development and innovative applications

Reviews on Advanced Materials Science
The development of auxetic materials, known for their unique negative Poisson’s ratio, is transforming various industries by introducing new mechanical properties and functionalities.
Shuaibu Abdulrasheed Suleiman, Deng Junjie, Xu Chenchen, Ade-Oke Victor Pelumi, Aliyu Abdulmajeed, Momoh Daniel   +5 more
doaj   +1 more source

Dynamic Covalent Polymeric Foams: En Route to a Sustainable Lightness

ChemSusChem, Volume 19, Issue 5, 13 March 2026.
Dynamic covalent polymer foams (DCPFs) combine lightweight cellular structures with adaptive polymer networks, enabling self‐healing, reprocessability, and recyclability. By integrating reversible covalent bonds into foam architectures, these materials open new pathways toward sustainable porous polymers within a circular materials economy.
Antoine Adjaoud, Anaë Girault‐Fodil, Farida Baraka, Pierre Verge   +3 more
wiley   +1 more source

Development of auxetic shoulder straps for sport backpacks with improved thermal comfort

AUTEX Research Journal
Auxetic foams and lattices, characterized by a negative Poisson’s ratio, offer unique mechanical and thermal properties that make them promising candidates for next-generation sports and outdoor equipment.
Bianca Eleonora, Parisi Mariafederica, Colombo Daniel, La Fauci Giuseppe, Dotti Francesca, Ferri Ada, Colonna Martino   +6 more
doaj   +1 more source

Auxetic cementitious composites (ACCs) with excellent compressive ductility: Experiments and modeling

Materials & Design
Auxetic cementitious composites (ACCs) with improved mechanical properties are created, by casting 3D printed polymeric auxetic reinforcement structures inside cementitious mortar.
Yading Xu, Branko Šavija
doaj   +1 more source