Bio-inspired composite structures subjected to underwater impulsive loading
•We developed a model simulating underwater blast loading and composite failure.•We redesigned composite panel to mimic natural material structures.•We compared performances of original and bio-inspired composite panels numerically.•Bio-inspired composite exhibits ability to reduce localised impact-...
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Published in | Computational materials science Vol. 82; pp. 134 - 139 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.02.2014
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | •We developed a model simulating underwater blast loading and composite failure.•We redesigned composite panel to mimic natural material structures.•We compared performances of original and bio-inspired composite panels numerically.•Bio-inspired composite exhibits ability to reduce localised impact-induced damages.•Bio-inspired composite helps to reduce impact-induced inter-laminar delamination.
Designing lightweight high-performance materials that can sustain high impulsive loadings is of great interest to marine and civil applications. When designing tough, strong new materials from relatively weak components, mimicking structures from nature can be a highly promising strategy, as illustrated by nacre from red abalone shells. One of nacre’s most impressive features is its ability to laterally spread damage and dissipate energy over millimetre length scales at crack tips and other defects. In this work, a composite panel is redesigned to mimic nacre’s microstructure. The bio-inspired composite panel and the original composite structure, which have identical areal mass, are subjected to an underwater impulsive loading scenario. Their performances are compared numerically in terms of damage and deflection. A finite element fluid–structure interaction model is developed to capture the water impact on E-glass/vinylester composite facets and to provide insights into the deformation modes and failure mechanisms. Damage and degradation in individual unidirectional composite laminas are simulated using Hashin’s composite damage model. The delamination between laminas is modelled by a bilinear cohesive model. Results interpreted from this numerical study will be used as guidance for the future manufacturing and experimental characterisation of bio-inspired composite structures. |
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ISSN: | 0927-0256 1879-0801 |
DOI: | 10.1016/j.commatsci.2013.09.033 |