| Title: |
Elastodynamic contact analysis of a novel bioinspired auxetic cellular structure under low-velocity impact via a boundary element approach |
| Authors: |
Khoa, ND; Linforth, S; Ngo, T |
| Publisher Information: |
Springer Science and Business Media LLC |
| Publication Year: |
2025 |
| Collection: |
The University of Melbourne: Digital Repository |
| Description: |
Impact-contact events can significantly degrade structural integrity, making it important to evaluate how protective structures respond under such conditions. This study illustrates a novel boundary element method (BEM) for analysing the elastodynamic behaviour of cellular structures subjected to low-velocity impact. The proposed method builds on the conventional BEM for solving the transient analysis of anisotropic elastic materials in two dimensions and the contact constraint relations of elastodynamic impact-contact problems. By leveraging these relations, the impact-contact BEM can accommodate various impact-contact situations, e.g. when the indentation depth is prescribed and the initial velocity is given. Previous studies demonstrated that bone-inspired cellular structures (BCS) have superior mechanical performances and higher impact resistance than conventional honeycomb and auxetic structures. This paper further investigates the impact-contact behaviour of BCS materials under impact-contact conditions. The reliability and applicability of the proposed method are validated through comparisons with results obtained using the finite element method (FEM) in a commercial software. With the provided numerical results, the parametric studies of BCS under impact loads are further studied and discussed. These provide valuable insights and help deepen our understanding of the elastodynamic impact-contact responses of BCS under impact-contact situations. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
0001-5970 |
| Relation: |
https://hdl.handle.net/11343/362123 |
| Availability: |
https://hdl.handle.net/11343/362123 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; CC-BY |
| Accession Number: |
edsbas.2A88B0C8 |
| Database: |
BASE |