Mussel adhesion is a problem of great interest to scientists and engineers. Recent microscopic imaging suggests that the mussel material is porous with patterned void distributions. In this paper, we study the effect of the pore distribution on the interfacial-to-the overall response of an elastic porous plate, inspired from mussel plaque, glued to a rigid substrate by a cohesive interface. We show using a semi-analytical approach that the existence of pores in the vicinity of the crack reduces the driving force for crack growth and increases the effective ductility and fracture toughness of the system. We also demonstrate how the failure mode may switch between edge crack propagation and inner crack nucleation depending on the geometric characteristics of the bulk in the vicinity of the interface. Numerically, we investigate using the finite element method two different void patterns; uniform and graded. Each case is analyzed under displacement-controlled loading. We show that by changing the void size, gradation, or volume fraction, we may control the peak pulling force, maximum elongation at failure, as well as the total energy dissipated at complete separation. We discuss the implications of our results on design of bulk heterogeneities for enhanced interfacial behavior.
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December 2018
Research-Article
On the Role of the Plaque Porous Structure in Mussel Adhesion: Implications for Adhesion Control Using Bulk Patterning
Ahmed Ghareeb,
Ahmed Ghareeb
Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign,
2119 Newmark Civil Engineering Lab,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: ghareeb2@illinois.edu
University of Illinois at Urbana-Champaign,
2119 Newmark Civil Engineering Lab,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: ghareeb2@illinois.edu
Search for other works by this author on:
Ahmed Elbanna
Ahmed Elbanna
Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: elbanna2@illinois.edu
University of Illinois at Urbana-Champaign,
2219 Newmark Civil Engineering Lab
,205 N. Mathews Ave,
Urbana, IL 61801
e-mail: elbanna2@illinois.edu
Search for other works by this author on:
Ahmed Ghareeb
Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign,
2119 Newmark Civil Engineering Lab,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: ghareeb2@illinois.edu
University of Illinois at Urbana-Champaign,
2119 Newmark Civil Engineering Lab,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: ghareeb2@illinois.edu
Ahmed Elbanna
Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign,
205 N. Mathews Ave,
Urbana, IL 61801
e-mail: elbanna2@illinois.edu
University of Illinois at Urbana-Champaign,
2219 Newmark Civil Engineering Lab
,205 N. Mathews Ave,
Urbana, IL 61801
e-mail: elbanna2@illinois.edu
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received June 21, 2018; final manuscript received August 19, 2018; published online September 7, 2018. Assoc. Editor: Yong Zhu.
J. Appl. Mech. Dec 2018, 85(12): 121003 (11 pages)
Published Online: September 7, 2018
Article history
Received:
June 21, 2018
Revised:
August 19, 2018
Citation
Ghareeb, A., and Elbanna, A. (September 7, 2018). "On the Role of the Plaque Porous Structure in Mussel Adhesion: Implications for Adhesion Control Using Bulk Patterning." ASME. J. Appl. Mech. December 2018; 85(12): 121003. https://doi.org/10.1115/1.4041223
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