Artículo
Lateral indentation of a thin elastic film
Fecha de publicación:
05/2022
Editorial:
Royal Society of Chemistry
Revista:
Soft Matter
ISSN:
1744-683X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Indentation is a standard, widely used technique in mechanical assays and theoretical analysis. It unveils the fundamental modes of deformation and predicts the response of the material under more complex loads. Here we present an experimental setup for testing thin-film materials by studying the lateral indentation of a narrow opening cut into a film, triggering a cascade of buckling events. The force response F is dominated by bending and stretching effects for small displacements and slowly varies with indenter displacement F ∼ d2/5, to finally reach a wrinkled state that results in a robust nonlinear asymptotic relation, F ∼ d4. Experiments with films of various thicknesses and material properties, and numerical simulations confirm our analysis and help to define an order parameter that accounts for the different response regimes observed in experiments and simulations.
Palabras clave:
Mechanics
,
Deformation
,
Indentation
,
Thin Films
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Trejo Loyola, Miguel Angel; Romero, Victor; Hamm, Eugenio; Cerda, Enrique; Lateral indentation of a thin elastic film; Royal Society of Chemistry; Soft Matter; 18; 4; 5-2022; 762-767
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