Novel Design Charts for Anisotropic Effective Elastic Properties of Pyramidal Lattice Materials

被引:0
|
作者
Eynbeygui, M. [1 ,2 ]
Arghavani, J. [1 ]
Akbarzadeh, A. H. [2 ,3 ]
Naghdabadi, R. [1 ]
机构
[1] Sharif Univ Technol, Dept Mech Engn, Tehran, Iran
[2] McGill Univ, Dept Bioresource Engn, Montreal, PQ H9X 3V9, Canada
[3] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 0C3, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Pyramidal lattice material; Finite element method; Effective elastic property; Anisotropy control; Hollow -tapered strut; TOPOLOGY;
D O I
10.1016/j.scriptamat.2023.115940
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Novel design charts for predicting the anisotropic effective elastic properties of pyramidal lattices are proposed for a wide range of relative density and various struts shape through finite element (FE) simulations. Pyramidal lattices are 3D printed using digital light processing (DLP) and are subsequently subjected to uniaxial compression tests to provide a partial experimental validation for the presented design charts. Regarding strut shape, the presented results uncover that using hollow-tapered instead of solid-uniform struts leads significant improvements for effective Young's and shear moduli. In addition, this study has paved the way towards enhancing our understanding of how the anisotropy of pyramidal lattices can be tailored by tuning the relative density and strut architecture. Resorting to an analytical framework, results indicate that controlling the void volume fraction of struts can lead the same effective Young's modulus for all three principal directions of pyramidal lattices with low relative densities.
引用
收藏
页数:9
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