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Elastomers

Continuum Mechanics of Line Defects in Liquid Crystals and Liquid Crystal Elastomers

Submitted by Amit Acharya on
research
continuum mechanics
Elastomers
liquid crystals
defect dynamics

Amit Acharya and Kaushik Dayal

 (To appear in Quarterly of Applied Mathematics)

This paper presents a generalization of traditional continuum approaches to liquid crystals and

liquid crystal elastomers to allow for dynamically evolving line defect distributions. In analogy with

recent mesoscale models of dislocations, we introduce fields that represent defects in orientational

and positional order through the incompatibility of the director and deformation ‘gradient’ fields.

Pressure over closure function for Polyurethane or (nearly) incompressible materials in general

Submitted by Andreas Burger on
Elastomers
Polyurethane
Pressure over closure function
incompressible materials

Hi,

Is anyone aware of a pressure-overcosure function for (nearly) incompressible materials.

 I am aware of functions for PE and articular cartilage but they do not work with v=0.5.   I have been trying to find similar functions for elastomers, but can't seem to find anything.

 I am grateful for any input.

 Andreas

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