Material Design Of A Biomimetic Composite
Material Used For A Wooden Building
Joint Structure
Author(s)
T. Ota & S. Enoki
Abstract
Earthquake-resistant wooden houses have been built in Japan for a long time. It
has been clear that the buildings absorb the vibration energy in the joint parts of
the wooden structures. The mechanism of energy absorption distorts the wood of
the joint. Therefore, it is important to develop joint parts that can be easily
exchanged for continued absorption of such energy. It has been reported that
biomimetic composite materials that imitate bone have a load decentralization
function and a shock-absorbing function. Wood has cell structures that resemble
bone. Therefore, it seems a logical step to consider biomimetic composite
materials that can be applied to wooden buildings. In this study, we propose to
create a wooden building joint using a biomimetic composite material. The joint
is constructed of aluminum lattice and plastic. In order to test whether this joint
structure would successfully absorb energy from earthquake vibrations, in this
paper we present results from an investigation into material characteristics.
Linear analyses were executed on the material. Load-displacement curves were
made by the constraint displacements and calculated reaction forces. Results
indicated that the material has nonlinear characteristics. We infer that the
composite aluminum and plastic material absorbs the vibration energy because
of its nonlinear characteristics. Based on study results, we conclude that using
this composite material for proposed joints can have significant benefits towards
the earthquake-proofing of individual houses.
Keywords: material design, biomimetic composite material, wooden structures,
joints and structural nonlinearity.
Keywords
material design, biomimetic composite material, wooden structures,
joints and structural nonlinearity
Related Book
Other papers in this volume
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