Accession Number:

AD1040514

Title:

Early Detection Of Failure Mechanisms In Resilient Biostructures: A Network Flow Study

Descriptive Note:

Technical Report

Corporate Author:

ERDC Vicksburg United States

Report Date:

2017-10-01

Pagination or Media Count:

47.0

Abstract:

The area of bioinspired material design is fairly young and mainly unexploited. This research aims to gain fundamental understanding of the hierarchical lattice architecture in the paddlefish rostrum and use this knowledge to obtain new insights for a wide range of applications. This work presents an integrated, interdisciplinary approach that employs computational mechanics and a complex network strategy to gain fundamental insights into the failure mechanisms of high performance, lightweight, structured composites by examining the geometry and material properties of the rostrum. Results from computational mechanics simulations and complex network analysis are presented with emphasis on the load transfer mechanism in the Bio-Structure, which is formation of force chains in structural system in the principal direction of the external stress to which the system is subjected. The current research presents a complex network analysis of the rostrum with and without the presence of the lattice architecture. Highly localized force chains were formed in the rostrum with similar loading conditions in absence of the lattice architecture. The flow network was also able to capture the stain localization in the tensile region of the rostrum and the asymmetrical response of the rostrum to uniform loading.

Subject Categories:

  • Biology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE