Título
MECHANICAL BEHAVIOR OF STRUCTURAL ADHESIVES: MODELING AND TESTS
Autor
IGNACIO ALBERTO ESTRADA ROYVAL
ALBERTO DIAZ DIAZ
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
The main objective of this paper is to show the response of a structural adhesive in a
bulk form. In order to do so, several tests are performed to observe how the adhesive
behaves under different unidirectional tests. It is very important to understand the
mechanical behavior of the adhesive, so developing a model based on tests
observations will be required. The experimental stress-strain curves provided by
unidirectional tests will be used in a 1D model. Many authors propose models that
predict the non-linear behavior response in structural adhesives. However, the models
lack in accuracy, this is because most of them do not include complex phenomena such
as plasticity or viscoplasticity, temperature, damage, etc. Experimental data obtained
from creep and cyclic tensile tests are used in order to identify parameters in the model
equations. The originality of the model is the inclusion of a kinematic hardening,
damage and Norton’s law [1] to predict the plastic strain rate. Experimental results show
a decrease of the elastic modulus, due to damage after unloading and reloading in a
cyclic test. The 1D model results are compared with the 1D test results in order to
validate the model. The 1D application is programed in MATLAB and it can be used in
the future to develop a more general 3D model.
Fecha de publicación
2012
Tipo de publicación
Memoria de congreso
Versión de la publicación
Versión enviada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Repositorio Orígen
Fuente de Objetos Científicos Open Access
Descargas
294