Mechanical energy absorption of architecturally interlocked petal-schwarzites

Autor(es)

Bastos, Leonardo, V ; Ambekar, Rushikesh S. ; Tiwary, Chandra S. ; Galvao, Douglas S. ; Woellner, Cristiano F.

• Tipo de documento: Artigo Científico
• Fonte: CARBON TRENDS; v. 13, p. 10-pg., 2023-10-14.

Resumo

We carried out fully atomistic reactive molecular dynamics simulations to study the mechanical behavior of six newly proposed hybrid schwarzite-based structures (interlocked petal-schwarzites). Schwarzites are carbon crystalline nanostructures with negative Gaussian curvature created by mapping a TPMS (Triply Periodic Minimal Surface) with carbon rings containing six to eight atoms. Our simulations have shown that petal-schwarzite structures can withstand uni-axial compressive stress up to the order of GPa and can be compressed past 50 percent strain without structural collapse. Our most resistant hierarchical structure has a calculated compressive strength of 260 GPa and specific energy absorption (SEA) of 45.95 MJ/kg, while possessing a mass density of only 685 kg/m3. These results show that these structures could be excellent lightweight materials for applications that require mechanical energy absorption. (AU)

• Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
• Beneficiário: Munir Salomao Skaf
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs