Issue |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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Page(s) | 1207 - 1214 | |
DOI | https://doi.org/10.1051/jp4:2006134184 | |
Published online | 26 July 2006 |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1207-1214
DOI: 10.1051/jp4:2006134184
Dynamic crushing behaviour of aluminium tubes filled with cork
C.P. Gameiro1, J. Cirne1 and G. Gary21 CEMUC- Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, 3030-201 Coimbra, Portugal
2 Laboratoire de Mécanique des Solides, École Polytechnique, 91128 Palaiseau, France
Published online: 26 July 2006
Abstract
Cork is a natural cellular material with unique remarkable
properties such as low density, great elasticity, chemical stability
and resilience, no permeability to liquid and gases and resistance
to wear and fire. Besides, it is ecological, hygienic, easy to
maintain and a very durable material. Unfortunately, there are still
application fields that have not been explored yet for the use of
cork, possibly due to the fact that it is a complex cellular
material, characterized by very variable mechanical properties which
clearly depend on its microstructure. The fundamental aspects of the
static and dynamic mechanical behaviour of natural and agglomerate
cork, used alone and as filler inside a tube with small dimensions,
under axial compressive loading, have already been studied by the
authors. Aluminium cork-filled tubes and their empty counterparts
were tested experimentally and numerically at quasi-static and
dynamic strain rates from 10 - 3s - 1 to 600 s - 1.
Data from the Split-Hopkinson Pressure Bar and “deconvolution”
techniques were used to generate stress-strain curves for the
structures composed of natural and agglomerate cork. The numerical
simulations of the dynamic compression of the specimens were carried
out using the finite element method software LS-DYNA and
showed quite good agreement with the experimental results. Hence, in
this work, in order to extend the study started previously and
investigate the possible advantages of cork-filling in longer tubes
with a different section, the authors simulate, using the same
software, the influence of the introduction of agglomerate cork in
square and circular aluminium tubes with a diameter/width of 80 mm, a
length of 300mm and a variable thickness. The mechanical properties
of the structures composed of cork may constitute a potential for
this material to be used in innovative applications related to
diverse fields such as automotive, transport, ships and military
applications.
© EDP Sciences 2006