Biomimetics - University of Strathclyde

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15 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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Biomimetics

Professor Julian Vincent
1
, Dr Derek Jones
2
, Dr Arjan Buis
3

1
Dept of Mechanical Engineering, University of Bath, UK
.

2.
A
natomical concepts
(
U
k

limited
)

3
National C
entre for Prosthetics and Orthotics, University of Strath
clyde
, UK
.


Introduction

Biomimetics is the implementation of design instances and processes derived from biology. It can be
direct (Velcro
)
, indirect (flight distance derived from optical flow in bees) or abstract (development of
system
s
for producing i
nventive solutions to pro
blems
).


To many observers of the current practise of biomimetics, it all depends on finding


by chance


biological processes which can be turned to some use
, b
ut
,

you still need the mindset. Georges de
Mestral would not have in
vented Velcro without having experienced trouble with his wife’s zip a few
days earlier, and realising that there was a need for a simpler zip
-
like mechanism. However, such
random connections are not reliable, and biomimetics will simply end as an interes
ting but not very
practical adjunct to design which has little impact. What we do need is a properly crafted “bridge”
between biology and engineering.


Biomimetics

Professor Vincent has

been working on this for the last ten years and ha
s

produced BioTRIZ
. TRIZ is a
Russian system for producing inventive solutions to problems. By its nature it transcends boundaries
between disciplines, which means that it can be made to apply suitable codified solutions from
biology to engineering


without the engineer
knowing anything about biology! It does this mainly by
insisting on the definition of a problem in functional terms rather than anything morphological.


“Biomimetics” is becoming increasingly popular as a descriptor, but to some extent this is academic
f
ashion! However, the main early adopters are to be found in sports, medicine and defence, all of
which areas can boast several examples of biomimetics. In sport
,

the quality of the innovation can
easily be gauged by how quickly the rules are changed to o
utlaw it. Defence is currently the biggest
beneficiary, mainly due to the American way of funding through

the

Defense Advanced Research
Projects Agency

(
DARPA
)
.

There are still some lessons to be learned and implemented. Hierarchy is probably the main on
e,
which allows a structure to be more durable and damage tolerant,

and allows the designed to
partition various ‘material’ properties amongst the different sizes in the hierarchy
.



Biomimetics in Orthotics

This presentation will give a structure for thin
king, based itself on a metaphor from nature and
illustrate the approach with an orthotic application. There is also a word of caution for those
interested in developing products for commercialisation. Businesses adapt to meet new market
needs and opport
unities are always there but strategy must lead and design’s role must be to
contribute. The challenge for designers is to think like business people and still create like artists.


Biomimetics in
Prosthetics

A modern prosthesis is an engineering assembly

with components typically fashioned from a variety
of materials and in some cases with highly sophisticated embedded systems.
This presentation will
question

the

function and behaviour of current components and
load transfer from the socket to the
skelet
on,

rather than
sophisticated systems such as micro
-
processor controlled components to
simulate gait, claimed to be
“bio
-
inspired”
.