Composite Structures, Journal Year: 2024, Volume and Issue: 353, P. 118717 - 118717
Published: Nov. 16, 2024
Language: Английский
International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 109939 - 109939
Published: Jan. 1, 2025
Language: Английский
Citations
4
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 16, 2025
Abstract This study experimentally demonstrates the reprogrammability of a rotating‐squares‐based mechanical metamaterial with an embedded array permanent magnets. How orientation, residual magnetization, and stiffness magnets influence both static dynamic responses is systematically investigated. It showed that by carefully tuning magnet orientation within metamaterial, notable tunability response can be achieved across regimes. More complex magnetic node configurations optimize specific structural decoupling quasi‐static stress–strain behavior from energy absorption under impact loading. Additionally, further enhanced external field, which modulates interactions structure. work paves way for developing engineered components adaptable responses, reprogrammable through either redistribution elements or application field.
Language: Английский
Citations
1
Mechanics of Advanced Materials and Structures, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 13
Published: Oct. 24, 2024
Language: Английский
Citations
4
Construction and Building Materials, Journal Year: 2025, Volume and Issue: 467, P. 140297 - 140297
Published: Feb. 12, 2025
Language: Английский
Citations
0
Published: Jan. 1, 2025
Language: Английский
Citations
0
Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 13, 2025
Maintaining the precise shape of spacecraft is particularly crucial for sophisticated instruments such as optical remote sensing satellites in face extreme temperature variations and high loads. To achieve multifunctions simultaneously programmable Poisson's ratio (PR) coefficient thermal expansion (CTE) multidirections, this study proposes 3D multidirectional anisotropic metastructure (MAM) with CET, PR, Young's modulus based on re‐entrant structures bimaterial trapezoid. The intrinsic mechanism adjustable CTE PR analyzed from mechanical perspective. theoretical method y ‐direction established Moor's theorem, accuracy both finite element analysis (FEA) results verified through uniaxial compression tests. Then, FEA demonstrate that MAM can directionally CTE, by modifying geometric parameters material combinations. Furthermore, responses under thermomechanical load are investigated, achieving tunability positive to negative. This offers a reliable reference design optimization engine components subjected
Language: Английский
Citations
0
Virtual and Physical Prototyping, Journal Year: 2025, Volume and Issue: 20(1)
Published: May 11, 2025
Language: Английский
Citations
0
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: May 14, 2025
Copper(I) tricyanomethanide, Cu(tcm), is a flexible framework material that exhibits the strongest negative area compressibility (NAC) effect ever observed─a remarkable property with potential applications in pressure sensors, artificial muscles, and shock-absorbing devices. Under increasing pressure, Cu(tcm) undergoes two sequential phase transitions (tetragonal → orthorhombic monoclinic): It has an initial tetragonal structure (I41md) at ambient conditions, but this only persists within narrow range; 0.12(3) GPa, pressure-induced ferroelastic transition occurs, transforming into low-symmetry (Fdd2). The NAC of -108(14) TPa-1 b-c plane between 0.93(8) GPa. behavior associated hinge motion "wine-rack" topology. At second transforms layered monoclinic (Cc) topologically interpenetrating honeycomb networks. slight linear (NLC) -1.1(1) along axis zero Kac = Ka + Kc 0.0(4) a-c over range 0.93-2.63 In contrast to phase, its mechanism understood as pressure-driven dampening layer "rippling," which acts increase cross-sectional higher hydrostatic pressures. These findings have implications for understanding underlying phenomenon materials.
Language: Английский
Citations
0
International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 281, P. 109552 - 109552
Published: July 14, 2024
In recent years there has been increased interest in 3D thermomechanical metamaterials. The current work reports the design, fabrication and testing of a novel anisotropic anepectic metamaterial obtained by grafting inserts second material into known auxetic structure, Double Elliptic Ring (DER). While auxetics have Negative Poisson's Ratio (NPR), anepectics combine this with negative coefficient thermal expansion (NTE). To avoid unnecessary time expenditure during additive manufacturing (AM) stage, mechanical finite element simulations (FEA) were used as tool to screen multitude possible design variants under consideration, thus aiding rapidly determining more promising geometries. further increase efficiency AM, selected structures then assembled from planar elements, joined together an adhesive. end, through combination two conventional materials – PVA Nylon positive ratio (PR) (CTE) organized DER architecture, it was achieve desired NPR CTE behaviour along some directions, coupled values other directions. Experimental results revealed correlation between PR number cells structure showed that, while are essentially determined metamaterial's geometry, induction NTE subtle interaction geometry properties mismatch constitutive materials.
Language: Английский
Citations
3
Mechanics of Advanced Materials and Structures, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 18
Published: April 26, 2025
Language: Английский
Citations
0