Structural Design and Dynamic Compressive Properties of Ti‐6Al‐4V Hollow Lattice Structures

2021 ◽  
Author(s):  
Haiting Shen ◽  
Huilan Ren ◽  
Jianguo Ning
Keyword(s):  
Structural Design ◽  
Lattice Structures ◽  
Compressive Properties

Influence of honeycomb dimensions and forming methods on the compressive properties of beetle elytron plates

2017 ◽  
Vol 22 (1) ◽  
pp. 28-39 ◽  
Author(s):  
Xiaoming Zhang ◽  
Jinxiang Chen ◽  
Yoji Okabe ◽  
Peiwei Zhang ◽  
Xiaobing Xiong ◽  
...  
Keyword(s):  
Structural Design ◽  
High Strength ◽  
Absorption Capacity ◽  
The Finite Element Method ◽  
Compressive Properties ◽  
Performance Requirements ◽  
Deformation Modes ◽  
Biomimetic Structures ◽  
Preparation Techniques ◽  
Forming Methods

For developing lightweight and high-strength biomimetic sandwich structures, this study investigates the influence of honeycomb dimensions and forming methods on the mechanical properties of beetle elytron plates relative to honeycomb plates via compression experiments and the finite element method. The results indicate that the trabecular-honeycomb core structure in beetle elytron plates can increase the compressive strength by approximately 50% and double the energy absorption capacity of honeycomb plates with the same material costs. Furthermore, the influence of three types of forming methods on the compressive properties of beetle elytron plates is investigated by comparing the different deformation modes of these structures with those of honeycomb plates. Based on these findings, application recommendations regarding the forming methods of beetle elytron plates are presented to facilitate the structural design and preparation techniques according to the performance requirements of different fields, which will accelerate the industrial application of these biomimetic structures.

scholarly journals Compressive Properties of Al-Si Alloy Lattice Structures with Three Different Unit Cells Fabricated via Laser Powder Bed Fusion

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2902 ◽  
Author(s):  
Xiaoyang Liu ◽  
Keito Sekizawa ◽  
Asuka Suzuki ◽  
Naoki Takata ◽  
Makoto Kobashi ◽  
...  
Keyword(s):  
Strain Rate ◽  
Lattice Structure ◽  
Unit Cell ◽  
Lattice Structures ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Compressive Properties ◽  
Powder Bed ◽  
Unit Cells ◽  
Indentation Tests

In the present study, in order to elucidate geometrical features dominating deformation behaviors and their associated compressive properties of lattice structures, AlSi10Mg lattice structures with three different unit cells were fabricated by laser powder bed fusion. Compressive properties were examined by compression and indentation tests, micro X-ray computed tomography (CT), together with finite element analysis. The truncated octahedron- unit cell (TO) lattice structures exhibited highest stiffness and plateau stress among the studied lattice structures. The body centered cubic-unit cell (BCC) and TO lattice structures experienced the formation of shear bands with stress drops, while the hexagon-unit cell (Hexa) lattice structure behaved in a continuous deformation and flat plateau region. The Hexa lattice structure densified at a smaller strain than the BCC and TO lattice structures, due to high density of the struts in the compressive direction. Static and high-speed indentation tests revealed that the TO and Hexa exhibited slight strain rate dependence of the compressive strength, whereas the BCC lattice structure showed a large strain rate dependence. Among the lattice structures in the present study, the TO lattice exhibited the highest energy absorption capacity comparable to previously reported titanium alloy lattice structures.

scholarly journals A detailed analysis on the microstructure and compressive properties of selective laser melted Ti6Al4V lattice structures

2021 ◽  
Vol 198 ◽  
pp. 109292
Author(s):  
Jinguo Ge ◽  
Xingchen Yan ◽  
Yongping Lei ◽  
Mansur Ahmed ◽  
Peter O'Reilly ◽  
...  
Keyword(s):  
Detailed Analysis ◽  
Lattice Structures ◽  
Compressive Properties

Design of a Reconfigurable Modular Chain for Folding 3D Lattice Structures

2016 ◽  
Author(s):  
Zhe Xu ◽  
Connor McCann ◽  
Aaron M. Dollar
Keyword(s):  
Structural Design ◽  
Space Structures ◽  
Modular Robots ◽  
Lattice Structures ◽  
Engineering Applications ◽  
Rhombic Dodecahedron ◽  
Wide Range ◽  
Different Shapes ◽  
High Level ◽  
Functional Components

A wide range of engineering applications, ranging from civil to space structures, could benefit from the ability to construct material-efficient lattices that are easily reconfigurable. The challenge preventing modular robots from being applied at large scales is mainly the high level of complexity involved in duplicating a large number of highly integrated module units. We believe that reconfigurability can be more effectively achieved at larger scales by separating the structural design from the rest of the functional components. To this end, we propose a modular chain-like structure of links and connector nodes that can be used to fold a wide range of 2D or 3D structural lattices that can be easily disassembled and reconfigured when desired. The node geometry consists of a diamond-like shape that is one twelfth of a rhombic dodecahedron, with magnets embedded on the faces to allow a forceful and self-aligning connection with neighboring links. After describing the concept and design, we demonstrate a prototype consisting of 350 links and experimentally show that objects with different shapes can be successfully approximated by our proposed chain design.

Effects of Coating Post-processing on the Compressive Properties of Strut-and-Node-Based FDM Lattice Structures

2021 ◽  
pp. 442-450
Author(s):  
Sandro Barone ◽  
Paolo Neri ◽  
Alessandro Paoli ◽  
Armando Viviano Razionale ◽  
Francesco Tamburrino
Keyword(s):  
Lattice Structures ◽  
Post Processing ◽  
Compressive Properties
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