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Numerical analysis of sutural tessellations under dynamic indentation
1Department of Mechanical and Industrial Engineering, Northeastern University, MA, USA.
Journal of the Mechanical Behavior of Biomedical Materials
|November 15, 2025
Summary
Biological sutures inspire novel honeycomb designs for impact resistance. These sutural geometries improve energy dissipation and reduce peak loads during dynamic loading, enhancing material performance.
Area of Science:
- Materials Science
- Mechanical Engineering
- Biomechanics
Background:
- Sudden dynamic loading causes mechanical failures in many systems.
- Nature exhibits biological sutures in load-bearing regions, inspiring material design.
- Hexagonal honeycomb structures with flat interfaces are common but can be improved.
Purpose of the Study:
- To investigate the mechanical response of sutural honeycomb tessellations under dynamic indentation.
- To explore the influence of suture geometry (angle, wavelength, amplitude) on material performance.
- To compare the effectiveness of auxetic and non-auxetic sutural designs.
Main Methods:
- Finite element (FE) simulations were employed to model material behavior.
- Elasto-perfectly-plastic models were used for both hard and soft phases.
- Dynamic explicit FE simulations analyzed responses to indentation loading.
Main Results:
- Sutural geometries reduced plastic deformation and peak load compared to flat designs.
- Sutures improved the dispersion of impact energy across the material.
- Auxetic sutural tessellations demonstrated enhanced energy dissipation efficiency.
Conclusions:
- Implementing sutural geometries in honeycomb structures enhances dynamic loading performance.
- Sutural designs offer improved impact energy management and reduced deformation.
- Auxeticity further boosts the energy dissipation capabilities of these novel materials.
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