INVESTIGADORES
CZERNER Marina
artículos
Título:
On the Feasibility of Identifying First Order Ogden Constitutive Parameters of Gelatin Gels from Flat Punch Indentation Tests
Autor/es:
SANCHEZ FELLAY, LUCAS; FASCE, LAURA; CZERNER, MARINA; FRONTINI, PM
Revista:
SOFT MATTER
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2015
ISSN:
1744-683X
Resumen:
feasibility of extracting First Order Ogden constitutive parameters of gelatin gels fromexperimental flat punch indentation curves is analyzed. Eight gelatin gel samples of differentformulations are evaluated. Identification of constitutive parameters is carried out by an inversemethod which combines finite element modeling simulations and numerical optimization.Parameters are compared with those obtained from uniaxial compression. A parametric study of theinfluence of model parameters on the shape of curves and a sensitivity analysis of parameter reidentification is performed. Accurate extraction of parameters is possible if the domain in which α parameter stands is lower than 2.
