Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7215318 | Composites Science and Technology | 2015 | 10 Pages |
Abstract
To reveal compression failure modes of one-dimensional (1D) lattice truss composite structures (LTCSs), parameterized finite element modeling (FEM) method and theoretical models were developed. LTCS has four failure modes: (a) fracture of the strut; (b) global buckling; (c) shell-like buckling and (d) mono-cell buckling. Changing the bay length and the column length, buckling modes of 8-node LTCS were revealed by FEM. It is found that enough column length could induce global buckling. When the column length decreases, the failure mode will turn to shell-like buckling and mono-cell buckling or strut fracture successively. Bay length greatly influences the buckling mode. Longer bay length could change the buckling mode from global buckling or shell-like buckling directly to mono-cell buckling. Theoretical models were proposed to predict the failure loads of LTCS. Through these models, failure maps were plotted to instruct optimal designing of LTCS.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Qianqian Sui, Hualin Fan, Changliang Lai,