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Computer Aided Design (CAD)
Thanks to:
Darryl Hillman
Sam Cooper
Duncan Evans
Drew Holloway
Jonathan Sidaway
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Introduction
Areas to be covered:
1. What is Computer Aided Desin!
". #riins o$ CAD
%. &ses o$ CAD
'. Computer Aided Architecture Desin (CAAD)
*. Electronic Desin Automation (ECAD)
+. &ses o$ CAD with an e,pert system
-. CAD Desin
. CAD / Databases
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A quick intro
Video created by a student in USA as part of course
work
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What is Computer Aided Design?
● CAD also 0nown as Computer Aided Dra$tin.
● here are % di$$erent types o$ CAD ("D2 ".*D and
%D).
● he so$tware is used to create and desin models
o$ these types and test them.
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Origins of CAD
● he $irst source o$ CAD resulted $rom attempts to automate
the dra$tin process.
● hese developments were pioneered by the 3eneral 4otors
5esearch 6aboratories in the early 17+8s.
● CAD became more widely used a$ter 17-8 because o$
technoloical advancements.
● CAD allowed users to desin products much 9uic0er
without the production o$ an actual product.
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•einnin in the 178s Computer;Aided Desin prorams
reduced the need o$ dra$tsmen sini$icantly.
•heir a$$ordability and ability to run on personal computers
also allowed enineers to do their own dra$tin wor0.
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Uses of CAD
CAD is used to desin a variety o$ di$$erent products
$or a variety o$ $ields such as
● Architecture
● Electronics
● Automotive enineerin
● <ndustrial Desin
●
4achinery ● =isual Art
● 4edical Desin
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Computer aided architecture design
(CAAD)
● CAD can be used to desin a %D visual representative o$ a
structure such as a bride2 hihway2 drainae systems or
buildins such as houses2 hih rise $lats.
● he so$tware allows the user to desin a "D representation
o$ the blue prints. Also they can create a %D view o$ the
$inished desin o$ the structure.
● When incorporated with an e,pert system it can wor0 out
the strain points o$ the buildin>structure.
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Designs of CAAD
House Blue
Circuit
board layout
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Eectronic design automation
(ECAD)
● CAD can also be used to desin electronic systems
such as printed circuit boards and interated circuits.
● As well as desinin the layout o$ a circuit the user can
also list loic ates $or the circuit.
● hese desins can be used $or hundreds o$ electronic
products and machinery.
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http://www.youtube.com/watch?v=lN!"#$%!&#
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Uses of CAD !ith an e"pert s#stem
● he limitations o$ CAD is that it doesn?t incorporate
real li$e concepts2 such as ravity or $riction.
● y &sin a e,pert system it can carry out calculations
such as stress o$ a buildin or the dra o$ a vehicle.
● he use o$ a e,pert system with CAD can be used
with a variety o$ products such as:
1. uildin materials $or buildins>constructions
". he Desin o$ vehicles.
%. Desin o$ individual parts.
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CAD Design and $oft!are
o choose which so$tware to buy or download
depends on the user and what it is they want to
desin. @or e,ample below are three di$$erent
pictures all usin di$$erent so$tware $or di$$erentdesins.
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$oft!are
Some CAD prorams which you can buy are:
– AutoCAD
– urboCAD
– roeCAD
ut there are a lot open source prorams such as:
– Archimedes
– @reeCAD
– 56;CAD
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CAD % Data&ases
•ypically CAD so$tware is built upon some databasestored in hard dis0
•@rom user point o$ view it loo0s li0e a $ile
•However CAD obBects such as line or circle are stored
as structured records and CAD enine has implemented
methods $or $ast data retrieval and storae
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CAD'CA Data&ase
Just li0e computer aided desinin (CAD) we have concepto$ computer aided manu$acturin (CA4). CAD so$tware
enables direct lin0 between CAD and CA4
#n its part CAD enables automation o$ desinin2 while
CA4 enables automation o$ manu$acturin processes. he
combination o$ CAD and CA4 enables automated
transition $rom desinin to manu$acturin
he database created by the interation o$ CAD>CA4is also called a manu$acturin database
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Concusion
CAD is important in the desin and sa$ety o$
constructions
here are many di$$erent types o$ CAD so$tware to
choose $rom to meet speci$ic needs
CAD e,traction data is input into a database which
appears in the $orm o$ a $ile
<t has spread into many other $ields o$ Bobs more recently
such as medicine and electronics
CAD is overall a cheaper tool than ta0in on a larer
wor0$orce to complete drawin tas0s