kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Impact behavior of periodic, stochastic, and anisotropic minimal surface-lattice sandwich structures
aAdvanced Digital & Additive Manufacturing Center, Khalifa University, P.O Box 127788, Abu Dhabi, UAE; bDepartment of Mechanical Engineering, Khalifa University, P.O. Box 2533, Abu Dhabi, UAE, P.O. Box 2533.
KTH, School of Engineering Sciences (SCI), Engineering Mechanics. aAdvanced Digital & Additive Manufacturing Center, Khalifa University, P.O Box 127788, Abu Dhabi, UAE; bDepartment of Mechanical Engineering, Khalifa University, P.O. Box 2533, Abu Dhabi, UAE, P.O. Box 2533.ORCID iD: 0000-0002-9438-9648
aAdvanced Digital & Additive Manufacturing Center, Khalifa University, P.O Box 127788, Abu Dhabi, UAE; bDepartment of Mechanical Engineering, Khalifa University, P.O. Box 2533, Abu Dhabi, UAE, P.O. Box 2533.
2024 (English)In: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 276, article id 109359Article in journal (Refereed) Published
Abstract [en]

Recent advancements in 3D printing technologies have made it possible to fabricate intricate lattice architectures with high precision. These lattices can now be utilized to design lightweight sandwich structures that serve multiple functions. To enhance the impact loading performance of these structures, it is crucial to understand how the lattice's topological properties, particularly those with minimal surface attributes like periodic or stochastic Primitive and Gyroid triply periodic minimal surfaces (TPMS) and spinodal-like stochastic cellular materials, associate with the mechanical properties of sandwich structures while keeping the skin thickness fixed. Thus, this paper explores the low-velocity impact behavior of various sheet/shell-based minimal surface-latticed cores of sandwich structures with woven composite skins. The elasto-plastic-damage numerical simulations consider lattice core periodicity, randomness, and anisotropy while keeping the relative density constant. Core lattice randomness and anisotropy are designed using the Gaussian Random Field (GRF) method for spinodal-based stochastic cellular materials and stochastic TPMS. The simulation results showed that the periodic Primitive-lattice core exhibits high out-of-plane shearing strength, enabling the sandwich structure to demonstrate the highest perforation limit. GRF spinodal-based core achieved the highest peak load due to its anisotropic mechanical properties. However, the post-yielding bending of the lattice sheet limited its ability to resist perforation, and absorb and dissipated energy. Interestingly, the stochastic Gyroid TPMS topology, with its inherent densely-distributed microstructure, showed high sensitivity to loading rate, resulting in enhanced energy absorption and dissipation of the sandwich structure. These findings offer valuable insights for optimizing multifunctional sandwich structures with superior impact performance and their design for additive manufacturing.

Place, publisher, year, edition, pages
Elsevier Ltd , 2024. Vol. 276, article id 109359
Keywords [en]
Impact loading, Mechanical anisotropy, Perforation limit, Spinodal, Stochastic lattice, Triply periodic minimal surface
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-346805DOI: 10.1016/j.ijmecsci.2024.109359Scopus ID: 2-s2.0-85193028991OAI: oai:DiVA.org:kth-346805DiVA, id: diva2:1860419
Note

QC 20240527

Available from: 2024-05-24 Created: 2024-05-24 Last updated: 2024-05-27Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Barsoum, Imad

Search in DiVA

By author/editor
Barsoum, Imad
By organisation
Engineering Mechanics
In the same journal
International Journal of Mechanical Sciences
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 19 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf