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Related Concept Videos

Thin-Walled Hollow Shafts01:15

Thin-Walled Hollow Shafts

497
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...
497

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3D Printed Tubulanes as Lightweight Hypervelocity Impact Resistant Structures.

Seyed Mohammad Sajadi1, Cristiano F Woellner2, Prathyush Ramesh1

  • 1Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|November 12, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed novel 3D printed polymer structures called tubulanes, inspired by nanotube designs. These lightweight materials exhibit exceptional load-bearing and impact resistance due to their unique lamellar deformation mechanism.

Keywords:
3D printingballistic impact resistancemechanical propertiesmolecular dynamics (MD) simulationtubulanes

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Nanotechnology

Background:

  • Lightweight materials with high ballistic impact resistance and load-bearing capabilities are highly sought after.
  • Nature achieves these properties using complex geometries in soft organic materials.

Purpose of the Study:

  • To investigate the compressive deformation and ballistic impact properties of 3D printed polymer structures (tubulanes).
  • To explore the potential of architecturally engineered materials inspired by nanoscale structures.

Main Methods:

  • Fabrication of three distinct 3D printed polymer structures (tubulanes).
  • Testing of compressive deformation and hypervelocity ballistic impact resistance.
  • Analysis of deformation mechanisms across multiple length scales.

Main Results:

  • Macroscopic tubulanes demonstrated remarkable load-bearing and hypervelocity impact resistance.
  • A lamellar deformation mechanism, originating from the ordered pore structure, was identified.
  • This mechanism was observed across nano to macro dimensions, indicating multi-scale structural integrity.

Conclusions:

  • 3D printed tubulanes offer a promising approach to creating advanced lightweight materials.
  • Morphological engineering inspired by atomic and nanoscale models enables tunable mechanical properties.
  • This strategy facilitates the design of materials with superior ballistic and load-bearing performance.