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Buckling dynamics of a solvent-stimulated stretched elastomeric sheet
Alessandro Lucantonio1, Matthieu Roché, Paola Nardinocchi
1Dipartimento di Ingegneria Strutturale e Geotecnica, Sapienza Università di Roma, Rome, Italy.
Soft Matter
|March 27, 2014
Summary
Solvent exposure can cause thin elastic sheets to buckle even when stable under stretching. Stretching magnitude controls the buckling pattern, enabling shape control of swollen sheets.
Area of Science:
- Materials Science
- Polymer Science
- Mechanical Engineering
Background:
- Thin elastic sheets can buckle under uniaxial strain, a phenomenon influenced by geometry and strain magnitude.
- Elastomeric materials are susceptible to swelling when exposed to solvents, altering their mechanical properties.
Purpose of the Study:
- To investigate the effect of solvent-induced swelling on the buckling behavior of thin elastomeric sheets.
- To explore the relationship between stretching magnitude and buckling pattern in swollen sheets.
- To demonstrate a method for controlling the shape of swollen elastic sheets.
Main Methods:
- Experimental stretching and solvent exposure of thin elastomeric sheets.
- Computational modeling to simulate buckling phenomena.
- Analysis of buckling pattern features in relation to applied strain and swelling.
Main Results:
- An elastomeric sheet stable under uniaxial stretching can become unstable upon solvent exposure.
- The buckling pattern's features are demonstrably dependent on the magnitude of stretching.
- Controlled shape manipulation of swollen homogeneous thin sheets is achievable.
Conclusions:
- Solvent swelling introduces a new instability mechanism in stretched elastic sheets.
- Stretching magnitude serves as a tunable parameter for controlling buckling morphology.
- This work presents a novel approach for designing and controlling the shapes of soft materials.
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