scholarly journals Space-reconfigurable reflector with auxetic lattice material

AIP Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 015101
Author(s):  
Bin Xu ◽  
Houfei Fang ◽  
Guoping Cai ◽  
Yangqing Hou ◽  
Shuidong Jiang ◽  
...  
Keyword(s):  
Lattice Material

scholarly journals Pseudospin versus magnetic dipole moment ordering in the isosceles triangular lattice material K3Er(VO4)2

2020 ◽  
Vol 102 (10) ◽  
Author(s):  
Danielle R. Yahne ◽  
Liurukara D. Sanjeewa ◽  
Athena S. Sefat ◽  
Bradley S. Stadelman ◽  
Joseph W. Kolis ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Magnetic Dipole ◽  
Triangular Lattice ◽  
Magnetic Dipole Moment ◽  
Lattice Material

scholarly journals Compressive Behaviour of Aluminium Pyramidal Lattice Material-Filled Tubes

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3817
Author(s):  
Yingjie Huang ◽  
Wenke Zha ◽  
Yingying Xue ◽  
Zimu Shi
Keyword(s):  
Mechanical Properties ◽  
Energy Absorption ◽  
Al Alloy ◽  
Compressive Behaviour ◽  
Lattice Material ◽  
Empty Tube ◽  
Thin Walled

This study focuses on the uniaxial compressive behaviour of thin-walled Al alloy tubes filled with pyramidal lattice material. The mechanical properties of an empty tube, Al pyramidal lattice material, and pyramidal lattice material-filled tube were investigated. The results show that the pyramidal lattice material-filled tubes are stronger and provide greater energy absorption on account of the interaction between the pyramidal lattice material and the surrounding tube.

scholarly journals Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8

2018 ◽  
Vol 97 (13) ◽  
Author(s):  
G. Pokharel ◽  
A. F. May ◽  
D. S. Parker ◽  
S. Calder ◽  
G. Ehlers ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Magnetoelastic Coupling ◽  
Lattice Material

Characterization and Performance Optimization of 2D Lattice Materials With Hexagonal Bravais Lattice Symmetry

2009 ◽  
Author(s):  
Mostafa S. A. Elsayed ◽  
Damiano Pasini
Keyword(s):  
Strain Energy ◽  
Structural Performance ◽  
Bravais Lattice ◽  
Macroscopic Strain ◽  
Mass Ratio ◽  
Strain Fields ◽  
Lattice Symmetry ◽  
Lattice Materials ◽  
Stiffness Properties ◽  
Lattice Material

The current paper examines the static performance of 2D infinite lattice materials with hexagonal Bravais lattice symmetry. Two novel microscopic cell topologies are proposed. The first topology is a semi-regular lattice that has the modified Schafli symbol 34.6, which describes the type of regular polygons surrounding the joints of the lattice. Here, 34.6 indicates four (4) regular triangles (3) successively surrounding a node followed by a regular hexagon (6). The second topology is an irregular lattice that is referred here as Double Hexagonal Triangulation (DHT). The lattice material is considered as a pin-jointed micro-truss where determinacy analysis of the material micro structure is used to distinguish between bending dominated and stretching dominated behaviours. The finite structural performance of unit cells of the proposed topologies is assessed by the matrix methods of linear algebra. The Dummy Node Hypothesis is developed to generalize the analysis to tackle any lattice topology. Collapse mechanisms and states of self-stress are deduced from the four fundamental subspaces of the kinematic and the equilibrium matrices of the finite unit cell structures, respectively. The generated finite structural matrices are employed to analyze the infinite structural performance of the lattice using the Bloch’s theorem. To find macroscopic strain fields generated by periodic mechanisms, the Cauchy-Born hypothesis is adopted. An explicit expression of the microscopic cell element deformations in terms of the macroscopic strain field is generated which is employed to derive the strain energy density of the lattice material. Finally, the strain energy density is used to derive the material macroscopic stiffness properties. The results showed that the proposed lattice topologies can support all macroscopic strain fields. Their stiffness properties are compared with those of lattice materials with hexagonal Bravais symmetry available in literature. The comparison showed that the lattice material with 34.6 cell topology has superior isotropic stiffness properties. When compared with the Kagome’ lattice, the 34.6 lattice generates isotropic stiffness properties, with additional stiffness to mass ratio of 18.5% and 93.2% in the direct and the coupled direct stiffness, respectively. However, it generates reduced shear stiffness to mass ratio by 18.8%.

scholarly journals Unconventional spin dynamics in the honeycomb-lattice material α−RuCl3 : High-field electron spin resonance studies

2017 ◽  
Vol 96 (24) ◽  
Author(s):  
A. N. Ponomaryov ◽  
E. Schulze ◽  
J. Wosnitza ◽  
P. Lampen-Kelley ◽  
A. Banerjee ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
High Field ◽  
Spin Dynamics ◽  
Honeycomb Lattice ◽  
Field Electron ◽  
Spin Resonance ◽  
Lattice Material

scholarly journals Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2

2017 ◽  
Vol 119 (12) ◽  
Author(s):  
H. Pfau ◽  
R. Daou ◽  
S. Friedemann ◽  
S. Karbassi ◽  
S. Ghannadzadeh ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Kondo Lattice ◽  
Lattice Material ◽  
Lifshitz Transitions

Mechanical behavior of 3D printed micro lattice material structure

2021 ◽  
Author(s):  
R. Raja ◽  
Jebas D Gabriel ◽  
Sabitha Jannet ◽  
A Mohammed Niyas ◽  
S.J. Vijay ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Material Structure ◽  
Lattice Material ◽  
3D Printed
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