INVESTIGADORES
OLLER Sergio Horacio Cristobal
libros
Título:
Numerical Simulation of Mechanical Behavior of Composite Materials
Autor/es:
S. OLLER
Editorial:
Springer International Publishing
Referencias:
Año: 2014 p. 229
ISSN:
978-3-319-04932-8
Resumen:
This
is a summary of the research work on "composite materials? carried out by
the author since 1990. It reflects my
personal work with other researchers and also with senior engineering and PhD
students whose thesis I have advised on this research line[1].
The
subjects included in the present work are oriented mainly towards the
constitutive modeling and structural evaluation of structures built with
composite materials. Many of these subjects were and are still today original.
Therefore, they do not represent a simple continuity of the research line
trends of the past.
All
the concepts presented here are a summary of a more extensive work carried out
by the author and other collaborators whose texts can be found in the
references mentioned in each case. It is
worthwhile mentioning that all these subjects are still under development and
require the additional participation and dedication of more people. This
summary shows the subjects are not at the same conceptual and technical level.
Some ideas are more developed than others, however, in general, all of them
show that the numerical-mechanical study of composite materials is a very
promising area for both, research work and industrial potential, and
consequently to improve their use for the best interest of society.
This research work
started in 1990 and has progressed on two different research lines: the ?Mixing
Theory? and its modifications and the ?Homogenization Theory? and its
comprehensive study. Both lines have given way to a significant scientific
production.
The original objective
of the research project was and is still today to design composite materials
from their own components basic properties, without handling the composite as a
single material. This ?concern? has
permanently pushed forward the research development and has opened the path towards
the ?material design? suitable for each structure. The subject?s complexity and
difficulty have demanded the intensive implementation of many techniques
previously developed by the author in other research lines such as plasticity,
anisotropy, introduction of rigid-body movements using the constitutive
equation, local instability through a constitutive formulation, large strains,
delamination problems, composites fatigue, etc. Simultaneously, a thorough data
base and parallelization intensive computational work has been carried out. Moreover,
a finite element code -PLCd[2]- has been developed and used as a
?development and testing tool? to implement these formulations. All this
technology has been transferred to the COMET[3] program, which is a finite element code
developed at CIMNE for more general purposes.
Currently, research on
composites is still under way and the temperature and humidity effects on the
behavior have been included for a more comprehensive study of the matrix-fiber
sliding phenomena. We are also trying to take these formulations to the
structural finite elements, such as shells and membranes.
This work has been
possible thanks to the institutional support of CIMNE (International Center for
Numerical method in Engineering), which has financially supported this book
since its first edition in Spanish in 2003, and later in its English edition.
In this latter task many people have participated, and particularly I thank Ms.
Hamdy Briceño, Prof. Miguel Cerrolaza and Cristina Pérez Arias for their
careful translation and revision of this text. I also thank all my students who
have contributed to the correction of the text during the eleven years that
this book has been used as a syllabus of "the Nonlinear Dynamics course"
in the Department of Strength of Materials, of the Technical University of
Catalonia, Spain.
I hope these notes will
contribute to a better understanding of the non-linear dynamics and encourage
the reader to study this subject in greater depth.