Characterization of paddlefish (<i>Polyodon spathula</i>) rostrum stellate bones

Allison, P. G.; Deang, J. F.; Diaz, Alfredo J.; Poda, Aimee R.; Hoover, Jan Jeffrey; Horstemeyer, M.F.; Perkins, Edward J.

doi:10.1680/bbn.13.00024

Cited by 9 publications

(8 citation statements)

References 21 publications

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“…Natural biocomposite materials such as nacre [1][2][3], bone [4,5], horn [5,6], and mineralized fish scales [7][8][9][10] are comprised of inorganic/organic nanocomposites with excellent mechanical properties, which have been inspirations for the development of man-made nanocomposites. Specifically, the nacre design is a nanocomposite with a brick and mortar morphology composed of aragonite nanoscale constituent tablets measuring approximately eight microns in length and width, 500 nm in thickness [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Mechanical, Thermal, and Microstructural Analysis of Polyvinyl Alcohol/Montmorillonite Nanocomposites

Allison

Moser

Chandler

et al. 2015

Journal of Nanomaterials

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Structural biomaterials such as nacre, bone, and fish scales possess unique structures that have hierarchical spatial configurations, which provide excellent mechanical properties when compared to their individual constituents. These observations have been the motivation for designing and characterizing bioinspired materials with high strength, high stiffness, and corrosion-resistant properties while at the same time being environmentally friendly. It has been demonstrated that polymer-clay nanocomposites can simulate the behavior of nacreous biomaterials such as abalone shell. Mechanical, thermal, and microstructural analyses characterized solution-cast polyvinyl alcohol (PVA)/montmorillonite (MMT) nanocomposite properties over compositions ranging from the neat polymer to 25% volume fraction of MMT nanoclay. Uniaxial tensile experiments were performed at displacement rates of 1 mm/min and 50 mm/min. Strength values are similar to those shown by nacre and represent a homogeneous dispersion of the MMT in the polymer matrix. Strength-to-weight ratios are similar to many structural metals.

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Section: Introductionmentioning

confidence: 99%

Mechanical, Thermal, and Microstructural Analysis of Polyvinyl Alcohol/Montmorillonite Nanocomposites

Allison

Moser

Chandler

et al. 2015

Journal of Nanomaterials

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“…There is a fourth category in the actual rostrum that has jelly type behavior but it was not included in this part of the study. These different components of the rostrum were also experimentally identified after performing nanoindentation and tension/compression tests on the main bones and cartilages (Allison et al 2013b;Deang et al 2017). In Allison et al (2013b) through nanoindentation was found that the middle bone (hard cartilage)'s average elastic modulus measured was 12.06 GPa.…”

Section: Model Descriptionmentioning

confidence: 99%

Numerical simulation of biological structures : paddlefish rostrum

Acosta¹,

Riveros²,

Patel³

et al. 2019

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The rostrum of a paddlefish is used as an antenna to detect electrostatic impulses emitted by plankton and also for hydrodynamic stability while feeding. The rostrum is formed by a network of cartilage, tissue, and interlocking star-shaped bones called stellate bones. The objective of this work is to study the load transfer mechanisms of the rostrum bone structure. Steel with elastic-plastic behavior is considered in this study as a basic homogeneous material to evaluate the performance of four models using the following elements: first-order reduced integration, first-order full integration, second-order reduced integration, and second-order full integration. From the study is found that second-order formulation resulted in lower structural stiffness as seen by higher displacements and stresses than using first-order formulated elements. Von Mises stresses and global stresses along the rostrum and at a particular location as well as bones were extracted and compared for the second-order-reduced integration model. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.

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“…Nano-indentation experiments carried out on the rostrum revealed the material properties of the components of the rostrum [49]. The three parts of the rostrum, as shown in Figure 11, have considerably different material properties [50].…”

Section: Materials Propertiesmentioning

confidence: 99%

A Transdisciplinary Approach for Analyzing Stress Flow Patterns in Biostructures

Patel

Riveros

Thompson

et al. 2019

MCA

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This work presents a transdisciplinary, integrated approach that uses computational mechanics experiments with a flow network strategy to gain fundamental insights into the stress flow of high-performance, lightweight, structured composites by investigating the rostrum of paddlefish. Although computational mechanics experiments give an overall distribution of stress in the structural systems, stress flow patterns formed at nascent stages of loading a biostructure are hard to determine. Computational mechanics experiments on a complex model will involve a high degree of freedom thereby making the extraction of finer details computationally expensive. To address this challenge, the evolution of the stress in the rostrum is formulated as a network flow problem generated by extracting the node and connectivity information from the numerical model of the rostrum. The flow network is weighted based on the parameter of interest, which is stress in the current research. The changing kinematics of the system is provided as input to the mathematical algorithm that computes the minimum cut of the flow network. The flow network approach is verified using two simple classical problems. When applied to the model of the rostrum, the flow network approach identifies strain localization in tensile regions, and buckling/crushing in compressive regions.

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Characterization of paddlefish (Polyodon spathula) rostrum stellate bones

Cited by 9 publications

References 21 publications

Mechanical, Thermal, and Microstructural Analysis of Polyvinyl Alcohol/Montmorillonite Nanocomposites

Mechanical, Thermal, and Microstructural Analysis of Polyvinyl Alcohol/Montmorillonite Nanocomposites

Numerical simulation of biological structures : paddlefish rostrum

A Transdisciplinary Approach for Analyzing Stress Flow Patterns in Biostructures

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