English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Crack driving force in twisted plywood structures

Fischer, F., Kolednik, O., Predan, J., Razi, H., & Fratzl, P. (2017). Crack driving force in twisted plywood structures. Acta Biomaterialia, 55, 349-359. doi:10.1016/j.actbio.2017.04.007.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-3E77-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-F9E5-2
Genre: Journal Article

Files

show Files
hide Files
:
2423071.pdf (Publisher version), 2MB
 
File Permalink:
-
Name:
2423071.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute of Colloids and Interfaces, MTKG; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Fischer, F.D., Author
Kolednik, O., Author
Predan, J., Author
Razi, Hajar1, Author              
Fratzl, Peter2, Author              
Affiliations:
1Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863285              
2Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

Content

show
hide
Free keywords: Fiber composite, lamellar bone, stiffness matrix, configurational forces, fracture toughness
 Abstract: Twisted plywood architectures can be observed in many biological materials with high fracture toughness, such as in arthropod cuticles or in lamellar bone. Main purpose of this paper is to analyze the influence of the progressive rotation of the fiber direction on the spatial variation of the crack driving force and, thus, on the fracture toughness of plywood-like structures. The theory of fiber composites is used to describe the stiffness matrix of a twisted plywood structure in a specimen-fixed coordinate system. The driving force acting on a crack propagating orthogonally to the fiber-rotation plane is studied by methods of computational mechanics, coupled with the concept of configurational forces. The analysis unfolds a spatial variation of the crack driving force with minima that are beneficial for the fracture toughness of the material. It is shown that the estimation of the crack driving force can be simplified by replacing the complicated anisotropic twisted plywood structure by an isotropic material with appropriate periodic variations of Young’s modulus, which can be constructed based either on the local stiffness or local strain energy density variations. As practical example, the concepts are discussed for a specimen with a stiffness anisotropy similar to lamellar bone.

Details

show
hide
Language(s):
 Dates: 2017-04-082017-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.actbio.2017.04.007
PMID: 0519
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Acta Biomaterialia
  Other : Acta Biomater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 55 Sequence Number: - Start / End Page: 349 - 359 Identifier: ISSN: 1742-7061