| Autor: |
Mortezapour, A. R., Monazzah, A. Hosseini, Sarfaraz, R., Sameezadeh, M. |
| Zdroj: |
Progress in Additive Manufacturing; January 2025, Vol. 10 Issue: 1 p291-308, 18p |
| Abstrakt: |
A novel hierarchical graded structure was designed based on scaling the hierarchical re-entrant cells, and its quasi-static compressive response was experimentally investigated and compared with a similar non-graded structure. The specimens were fabricated using fused deposition modeling (FDM) with Acrylonitrile Butadiene Styrene (ABS) material. The new design significantly improves the energy absorption characteristics of the structure, such as enhanced specific energy absorption up to 290% compared to the non-graded structure. The mechanical response and progressive damage of the introduced structure were successfully simulated using finite element analysis. Instead of a popular elastic–plastic model, a pressure-dependent plasticity material model, specifically the Drucker-Prager model, was employed. Verification of the results with experimental data confirms the adequacy of this model for accurately simulating the examined auxetic structure. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full text from SpringerLink