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Micromechanical models to guide the development of synthetic ‘brick and mortar’ composites

Micromechanical models to guide the development of synthetic ‘brick and mortar’ composites
Micromechanical models to guide the development of synthetic ‘brick and mortar’ composites
This paper describes a micromechanical analysis of the uniaxial response of composites comprising elastic platelets (bricks) bonded together with thin elastic perfectly plastic layers (mortar). The model yields closed-form results for the spatial variation of displacements in the bricks as a function of constituent properties, which can be used to calculate the effective properties of the composite, including elastic modulus, strength and work-to-failure. Regime maps are presented which indicate critical stresses for failure of the bricks and mortar as a function of constituent properties and brick architecture. The solution illustrates trade-offs between elastic modulus, strength and dissipated work that are a result of transitions between various failure mechanisms associated with brick rupture and rupture of the interfaces. Detailed scaling relationships are presented with the goal of providing material developers with a straightforward means to identify synthesis targets that balance competing mechanical behaviors and optimize material response. Ashby maps are presented to compare potential brick and mortar composites with existing materials, and identify future directions for material development.
composites, micromechanics, strength, modulus, nacre
0022-5096
1545-1560
Begley, Matthew R.
9f4e52bc-507a-4ef6-910f-bd11d25c2209
Philips, Noah R.
2a58710c-45f9-4dfa-8786-2d740df73bc8
Compton, Brett G.
06c117ff-c3d8-432f-a7c4-8c1950326f24
Wilbrink, David V.
f66e39d2-e64d-43fa-9077-72c2e452b967
Ritchie, Robert O.
aceaba6e-2424-4eee-ab05-bf81e85eb936
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Begley, Matthew R.
9f4e52bc-507a-4ef6-910f-bd11d25c2209
Philips, Noah R.
2a58710c-45f9-4dfa-8786-2d740df73bc8
Compton, Brett G.
06c117ff-c3d8-432f-a7c4-8c1950326f24
Wilbrink, David V.
f66e39d2-e64d-43fa-9077-72c2e452b967
Ritchie, Robert O.
aceaba6e-2424-4eee-ab05-bf81e85eb936
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b

Begley, Matthew R., Philips, Noah R., Compton, Brett G., Wilbrink, David V., Ritchie, Robert O. and Utz, Marcel (2012) Micromechanical models to guide the development of synthetic ‘brick and mortar’ composites. Journal of the Mechanics and Physics of Solids, 60 (8), Summer Issue, 1545-1560. (doi:10.1016/j.jmps.2012.03.002).

Record type: Article

Abstract

This paper describes a micromechanical analysis of the uniaxial response of composites comprising elastic platelets (bricks) bonded together with thin elastic perfectly plastic layers (mortar). The model yields closed-form results for the spatial variation of displacements in the bricks as a function of constituent properties, which can be used to calculate the effective properties of the composite, including elastic modulus, strength and work-to-failure. Regime maps are presented which indicate critical stresses for failure of the bricks and mortar as a function of constituent properties and brick architecture. The solution illustrates trade-offs between elastic modulus, strength and dissipated work that are a result of transitions between various failure mechanisms associated with brick rupture and rupture of the interfaces. Detailed scaling relationships are presented with the goal of providing material developers with a straightforward means to identify synthesis targets that balance competing mechanical behaviors and optimize material response. Ashby maps are presented to compare potential brick and mortar composites with existing materials, and identify future directions for material development.

Full text not available from this repository.

More information

e-pub ahead of print date: 10 March 2012
Published date: August 2012
Keywords: composites, micromechanics, strength, modulus, nacre
Organisations: Magnetic Resonance

Identifiers

Local EPrints ID: 354754
URI: https://eprints.soton.ac.uk/id/eprint/354754
ISSN: 0022-5096
PURE UUID: a6705b0b-cb52-4f51-9946-31187d0e87b8
ORCID for Marcel Utz: ORCID iD orcid.org/0000-0003-2274-9672

Catalogue record

Date deposited: 22 Jul 2013 11:09
Last modified: 14 Jul 2018 00:30

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