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Related Concept Videos

Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
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Scaling Up Bone-Inspired Reinforcements: Tunable Structural Performance for Next-Generation Bioinspired Composite

Nastaran Bahrami Novin1, Alessandro Stagni2, Ludovico Musenich2

  • 1Department of Civil, Chemical and Environmental Engineering, University of Genoa, via Montallegro 1, GENOVA, GE, 16145, Italy.

Bioinspiration & Biomimetics
|July 7, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces osteon-like structures (OLS) for tunable fiber-reinforced composites (FRCs). Optimized fiber orientation enhances axial stiffness and buckling performance in these bio-inspired reinforcements.

Keywords:
FRCbio-inspiredbonecomposites

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Biomimetics

Background:

  • Architectural design offers a method to modify the mechanical properties of fiber-reinforced composites (FRCs) without changing their material composition.
  • The concentric structure of osteons in cortical bone serves as inspiration for creating advanced composite materials.

Purpose of the Study:

  • To present a framework for designing, modeling, and fabricating multilayered cylindrical osteon-like structures (OLS) with tunable mechanical properties.
  • To investigate the influence of architectural design on the mechanical response and structural stability of OLS.

Main Methods:

  • Development of a custom pull winding technique for continuous multilayer OLS fabrication.
  • Experimental evaluation of OLS under uniaxial loading.
  • Finite element simulations, including RVE-based models, with linear and nonlinear buckling analyses.
  • Validation of the FE model against experimental data.

Main Results:

  • Successful fabrication of millimeter-scale multilayer OLS using the developed pull winding technique.
  • FE model accurately predicted OLS mechanical behavior, validated by experimental results.
  • Demonstrated significant impact of stacking sequence and fiber orientation on OLS mechanical response.
  • Identified optimal fiber orientation (parallel to the OLS axis) for enhanced axial stiffness and buckling performance.

Conclusions:

  • The developed framework enables the creation of bio-inspired laminate systems with tunable properties.
  • Fiber orientation is a critical factor in optimizing the mechanical performance and stability of OLS.
  • The study provides a design space for OLS length selection, balancing material strength and buckling resistance.