| Texto completo | |
| Autor(es): |
Javier Ramirez-Gil, Francisco
[1, 2]
;
Nelli Silva, Emilio Carlos
[3]
;
Montealegre-Rubio, Wilfredo
[2]
Número total de Autores: 3
|
| Afiliação do(s) autor(es): | [1] Inst Univ Pascual Bravo, Fac Engn, Mech Dept, Medellin 050034 - Colombia
[2] Univ Nacl Colombia, Fac Mines, Mech Engn Dept, Medellin 050034 - Colombia
[3] Univ Sao Paulo, Sch Engn, Dept Mechatron & Mech Syst Engn, Sao Paulo, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS & DESIGN; v. 212, DEC 15 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
A tradeoff between lightweight and ballistic resistance is common when designing ballistic protection systems for the transportation market. Steel is one of the most affordable and widely used armor materials due to its cost and manufacturing advantages. However, its high density compared to ceramics and composites reduces its eligibility. Therefore, a weight reduction of steel plates is achieved here by inserting holes distributed throughout the plate thickness. Two approaches are proposed. The first creates cylindrical hole patterns parametrically based on the functionally graded concept found in biological structures subjected to impact loads. The second approach uses the topology optimization method to design the free-shaped hole pattern through thickness. The designed plates are manufactured and evaluated numerically and experimentally. Ballistic impact tests are performed according to the NIJ 0108.01 standard, and the results are analyzed using design of experiments. Several nondestructive tests are applied to measure the damage on the impacted plates. Results show that the performance of the topology optimized designs and the solid plates is statistically equivalent, while the parametric plates are partially penetrated. This is an important result to establish a new design methodology in a complex field where topology optimization has been little explored. (c) 2021 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/). (AU) | |
| Processo FAPESP: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia |