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MODELLING AND ANALYSIS OF A CENTRIFUGAL
BLOWER
NOMENCLATURE
g : acceleration due to gravity
E : Youngs modulus (N/mm2)
Eij : Youngs modulus of GFR and !FR (N/mm2)
Gij :"#ear modulus of GFR and !FR (N/mm2)
" : $llo%a&le s#ear stress in t#e 'rinci'al material
system
:strain (mm/mm)
* : "#ear stress (N/mm2)
+ :Normal stress (N/mm2)
, : oisons ratio
- : density (.g/m)
FE$ : Finite Element $nalysis
FE0 : Finite Element 0et#od
. : "tiffness matri1 of t#e structural system
0 : 0ass matri1 of t#e structural system
: 3is'lacement vector of t#e system
40! : 4rganic 0atri1 !om'osites
00! : 0etal 0atri1 !om'osites
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!0! : !eramic 0atri1 !om'osites
0! : olymer 0atri1 !om'osites
FR : Fi&er Reinforced com'osites
LIST OF FIGURES
Figure No Description Pge No
55 !entrifugal 6lo%er
52 arts of !entrifugal 6lo%er 7
5 "tress 8strain diagram for a #y'ot#etical com'osite 27
2 E1'loded vie% of t#ree cross9'ly laminated 'lates 2
75 ;arious ty'es of elements used in FE0 7B
? $luminium !entrifugal 6lo%er FE model in $N"Y"
%it# &oundary conditions >5
?7 !om'osite !entrifugal 6lo%er FE model in $N"Y"
%it# &oundary conditions >2
?? Cayu' seDuence of im'eller in $N"Y" >2
>5 !entrifugal &lo%er FE model in $N"Y" %it#
&oundary
conditions and 'ressures >7
@5 3eformation of $luminium &lo%er @5
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@2 3is'lacement of $luminium &lo%er in 9direction @5
@ 3is'lacement of $luminium &lo%er in Y9direction @2
@7 3is'lacement of $luminium &lo%er in 9direction @2
@? "tress of $luminium &lo%er in 9direction @
@> "tress of $luminium &lo%er in Y9direction @
@@ "tress of $luminium &lo%er in 9direction @7
@< 5strinci'al "tress of $luminium &lo%er @7
@ 2ndrinci'al "tress of $luminium &lo%er @?
@5B rdrinci'al "tress of $luminium &lo%er @?
@55 3eformation of com'osite &lo%er @@
@52 3is'lacement of com'osite &lo%er in 9direction @@
@5 3is'lacement of com'osite &lo%er in Y9direction @ Noise
control tec#niDues >
5@ "ource modification >
5< Role of !om'osite materials in noise signature control
@
5 ro&lem definition @
55B "co'e of t#e 'roject
)$& 043ECNG $N3 0E"ANG 4F !EN=RFIG$C 6C4JER ?9>2
?5 0odeling &y using !$=$ ;? R5 ?
viii
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?2 0es#ing &y using Ay'ermes# 5BB >B
? E1'orting mes# to t#e $N"Y"52B >5
*$& "=$=! $N3 3YN$0! $N$CY"" 4F !EN=RFIG$C 6C4JER
>9>
>B ntroduction >
>5 FE modeling of t#e &lo%er >
>2 0aterial ro'erties of t#e &lo%er >
> 6oundary conditions and loads >7
>7 $nalysis of !entrifugal &lo%er >?
>? "tatic analysis >?
>> 0odal (Eigen value) analysis >>
+$& RE"IC=" $N3 3"!I""4N" @B97
@5 "tatic analysis of aluminium &lo%er @B
@2 "tatic analysis of com'osite &lo%er @>
@ Eigen value analysis of &lo%er 9
