TOM_2 Lab Manual Corrected 20 Dec12

8/9/2019 TOM_2 Lab Manual Corrected 20 Dec12

1/22

VISVESVARAYA NATIONAL INSTITUTE OF

TECHNOLOGY

LABORATORY MANUAL

THEORY OF MACHINES - II

(MEP-211)

DEPARTMENT OF MECHANICAL ENGINEERING


2/22

Name of the Stue!t" ----------------------------------------------------------------------------------------- #ate" -----------------------------

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1: DETERMINATION OF UNKNOWN MOMENT OF INERTIA OF GIVEN COMPONENT USING

TRIFILER PENDULUM

EQUIPMENT/EXPERIMENTAL SETUP NAME" TRIFILAR PENDULUM

The ha*e of a +o, f&e.ue!t$, o /om*$e0 that t m*o+$e to /om*ute the mome!t of !e&ta% Co!!e/t!

&o u/h e0am*$e he&e ue to the& /om*$e0 ha*e mome!t of !e&ta /a!!ot +e /om*ute eomet&/a$$,

Hoe3e& t *o+$e to f! the ame !&e/t$, th&ouh ,!am/ meau&eme!t% T&f$e& *e!u$um o!e u/h

a&&a!eme!t he&e mome!t of !e&ta of a!, /om*o!e!t /a! +e fou! out +, meau&! the tme *e&o of

o/$$ato! *&o3e the /e!t&e of &a3t, of the /om*o!e!t '!o! to u%

EQUIPMENT DESCRIPTION:

T&f$e& *e!u$um a th&ee t&! to&o!a$ *e!u$um a ho! ! fu&e% Th&ee t&! of e.ua$ $e!th ( l)

u**o&t a *$atfo&m a! a&e e.ua$$, *a/e at a ta!/e rf&om the /e!t&e of *$atfo&m%

Let M*+e the ma of the *$atfo&m a! M +e the ma of the /om*o!e!t hoe mome!t of !e&ta I to +e

meau&e% If T the tme *e&o of to&o!a$ o/$$ato! the!4

PROCEDURE:

Meau&e $e!th of the t&! la! *$atfo&m &au r% Set the *$atfo&m ! to&o!a$ o/$$ato! a! meau&e the

tme *e&o T5%The! *ut the 3e! /om*o!e!t o! the *$atfo&m o that t /%% $e at the /e!t&e of the *$atfo&m%

Set the *$atfo&m ! o/$$ato! aa! a! meau&e the tme *e&o T1%

F! ma M*of the *$atfo&m a! /a$/u$ate t mome!t of !e&ta I*%The! /a$/u$ate the u!'!o! mome!t of

!e&ta of the /om*o!e!t u! the 3e! fo&mu$a *utt! TT1%

It !ot /om*u$o&, to meau&e T54 %e% tme *e&o of o/$$ato! of em*t, *$atfo&m% Hoe3e& tue!t a&e

a3e to /&o/he/' the e0*e&me!ta$ 3a$ue of T5th theo&et/a$ 3a$ue 3e! +,

INSTRUCTION:

The 'et/h &e.u&e to +e &a! +, the tue!t% Re*o&t the meau&e ata a! ho ,ou& /a$/u$ato! th

o+ta!e 3a$ue of mome!t of !e&ta% A$o /a$/u$ate the theo&et/a$ 3a$ue of tme *e&o (T 5) of o/$$ato! of the

em*t, *$atfo&m%

REFERENCE:


3/22

1) Theo&, of Ma/h!e a! Me/ha!m - Th& Eto!4 +, U/'e&4 Pe!!o/' a! Sh$e,4 ** 677-852%

2) Theo&, of Ma/h!e 9 Th& Eto!4 +, S% S% Ratta!4 **% ::2%



4/22

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 2: DETERMINATION OF MOMENT OF INERTIA AND LOCATION OF CENTRE OF GRAVITY

OF A CONNECTING ROD

EQUIPMENT/EXPERIMENTAL SETUP NAME"SIMPLE PENDULUM ARRANGEMENT

Th e0*e&me!t m$a& to t&f$e& *e!u$um4 +ut th mu/h m*$e& ! the e!e that t oe !ot &e.u&e the

'!o$ee of C%;% The a&&a!eme!t ha a '!fe ee u*e!o! o3e& h/h the /o!!e/t! &o u*e!e

a! t tme *e&o of o/$$ato! meau&e%

PROCEDURE:

F&t f! out the ma M of the /o!!e/t! &o% Meau&e the e! to e! ta!/e (a < +) +etee! the + e!

a! ma$$ e! +ea&! a ho! ! fu&e +e$o% Su*e! the /o!!e/t! &o f&om + e! +ea&! e a!

!ote the tme *e&o T+of o/$$ato!% Sm$a&$, &e*eat t fo& ma$$ e! +ea&! e! a! !ote tme *e&o Ta%

A$o (a < +) '!o!% F&om thee &e$ato! f! ='> a! =a>4 /a$/u$ate the mome!t of !e&ta u!

The /a$/u$ate 3a$ue of =a> 3e the $o/ato! of /e!t&e of &a3t, of /o!!e/t! &o f&om ma$$ e! +ea&!%

REFERENCE:

1) Theo&, of Ma/h!e - Th& Eto!4 +, S% S% Ratta!4 **% 667-685%



5/22

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 3: SINGLE PLANE FIELD BALANCING OF ROTOR

EQUIPMENT/EXPERIMENTAL SETUP NAME"DYNAMIC BALANCING MACHINE-I

S!$e *$a!e fe$ +a$a!/! *&o/eu&e a**$/a+$e to !ut&a$ &oto& ! o*e&ato! he! the u!+a$a!/e amou!t

a! t a!u$a& $o/ato! !ot '!o!% Th metho uefu$ he! a &oto& ha3! tat/ u!+a$a!/e o!$, o&

he! /ou*$e u!+a$a!/e ma$$ &e$at3e to fo&/e u!+a$a!/e% Th metho ue 3+&ato! meau&eme!t ata f&om

u**o&t +ea&! to f! out the &e.u&e +a$a!/e /o&&e/to! ma%

EQUIPMENT DESCRIPTION:

The &oto& to +e +a$a!/e u**o&te o! a +a$a!/! ma/h!e a! &otate +, a moto& th&ouh +e$t &3e% A

t&o+o/o*e ue to meau&e the *hae he&e am*$tue mete& !/ate the 3+&ato! am*$tue% A f$te&

tu!! '!o+ *&o3e to ,!/h&o!e at 1?&*m o a to !/ate 3+&ato! at 1 ? &*m f&e.ue!/, h/h

ma!$, ue to u!+a$a!/e%

PROCEDURE: F&t the f$te& f&e.ue!/, tu!e th &otat! f&e.ue!/,% Tu!! /o!f&me he! the

am*$tue &ea/he ma0mum a e$$ a he! t&o+o/o*/ !/ato! +e/ome tato!a&,% @+&ato! am*$tue

a! *hae !/ate +, t&o+o/o*e !ote% Let t +e 3e/to& @5% The! a t&a$ ma of t&am *ut o! the &oto&

at a!, a!u$a& $o/ato! ! the u!+a$a!/e *$a!e a! the &eu$t! 3+&ato! am*$tue a! *hae !ote% Let t +e

@1% A 3e/to& a&am /o!t&u/te o! *o$a& &a*h th 3e/to& @5a! @1a ho! !e0t *ae% &e*&ee!t the

3e/to& ffe&e!/e +etee! @5a! @1h/h a/tua$$, &e*&ee!t the effe/t of t&a$ eht% The /a$/u$ato! fo&

/o&&e/to! ma a! t a!u$a& $o/ato! e0*$a!e ! the m*$e /a$/u$ato! +e$o the 3e/to& a&am%

The /o&&e/to! ma *ut ! &e.u&e $o/ato! a! 3+&ato! &ea! ta'e! aa!% A oo /o&&e/to! $$

&eu$t ! /o!e&a+$e &eu/to! of +ea&! 3+&ato!%

INSTRUCTION:

The S/hemat/ a&am of the etu* to +e &a! o! the $eft *ae ho the 3+&ato! &ea! a! /o&&e/to!

ma /a$/u$ato! a! +e$o t% Atta/h *o$a& &a*h e*a&ate$,% If the &eua$ 3+&ato! !ot $o e!ouh

/omme!t o! the fa/to& ,ou th!' &e*o!+$e fo& t%

REFERENCE:

1) Theo&, of Me/ha!m a! Ma/h!e +, ;hoh Ma$$/'

2) IR# MECHANALYSIS Ma!ua$%



6/22

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. : DEMONSTARION AND BALANCING OF INERTIA FORCES IN RECIPROCATING ENGINE

MECHANISM

EQUIPMENT/EXPERIMENTAL SETUP NAME"DYNAMIC BALANCING MACHINE-II

I! a &e/*&o/at! me/ha!m u!+a$a!/e !e&ta fo&/e a&e of to t,*e" P&ma&, u!+a$a!/e a! Se/o!a&,

u!+a$a!/e fo&/e% If e o a! a!a$, &e*$a/! the /o!!e/t! &o +, t ,!am/ e.u3a$e!t ma *a& ,tem

$o/ate at the /&a!' *! e! a! *to! e! the! e et

M&e/ *to! ma *$u the e.u3a$e!t /o!!e/t! &o ma at *to! e! a! =!> the /o!!e/t! &o $e!th to

/&a!' &au &ato%

Both P&ma&, a! Se/o!a&, !e&ta fo&/e a/t a$o! the $!e of moto! of the *to! +ut the& ma!tue 3a&, a

*e& the /o!e /om*o!e!t% P&ma&, u!+a$a!/e fo&/e /a! +e +a$a!/e +, *utt! a /o&&e/to! ma e.ua$ to M &e

! o**ote &e/to! to the /&a!'% Hoe3e& t !t&ou/e a 3a&,! fo&/e /om*o!e!t a$o! *e&*e!/u$a&

&e/to!% Thu the +a$a!/! *&o/eu&e fo& &e/*&o/at! ,tem 3e o!$, *a&ta$ &eu$t% I! ato! to thee

!e&ta fo&/e the&e ou$ +e !e&ta fo&/e ue to &otat! u!+a$a!/e o! the /&a!' h/h e.ua$ to /&a!'

u!+a$a!/e ma *$u the /o!!e/t! &o e.u3a$e!t ma at the /&a!' e!% Th &otat! u!+a$a!/e /a! +e

/om*$ete$, e$m!ate +, *utt! a /o&&e/to! ma of ame amou!t o**ote to /&a!'

PROCEDURE:

F! the /o!!e/t! &o ma a! t&+ute t at *to! e! a! /&a!' e! fo$$o! the /o!/e*t of ,!am/

e.u3a$e!t ,tem% The! f! tota$ &e/*&o/at! ma M&e/ a! tota$ &otat! u!+a$a!/e ma% A /o&&e/to!

ma a e0*$a!e a+o3e to +a$a!/e &otat! u!+a$a!/e /om*$ete$, a! fo& 85 +a$a!/! of &e/*&o/at!

u!+a$a!/e% Note the effe/t afte& +a$a!/!% The! &e*eat the *&o/eu&e fo& 155 +a$a!/! of &e/*&o/at!

u!+a$a!/e a! !ote the effe/t% Com*a&e the to /ae fo& m!mum f&ame moto!%


P&ma&, a! Se/o!a&,

fo&/e &e/to!


7/22

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. !: DEMONSTRATION AND CHARACTERISATION OF BEARING VIBRATION DUE TO

UNBALANCE IN ROTATING MACHINES

EQUIPMENT/EXPERIMENTAL SETUP NAME:DYNAMIC BALANCING MACHINE-I

U!+a$a!/e ! a &otat! ma/h!e /a! +e ue to u!+a$a!/e !e&ta fo&/e o&Da! u!+a$a!/e !e&ta /ou*$e% he!

a &oto& /o!t&u/to! 3e&, th! th &e*e/t to the haft $e!th a ! a fa! o& !$e tae *um*4 u!+a$a!/e

$o/a$e a&ou! *$a!e o!$, a! t /a! +e /o&&e/te +, *&o3! +a$a!/e /o&&e/to! ma ! the ame *$a!e% But

f the &oto& /o!t&u/to! t&+ute u/h a mu$ttae *um*4 tu&+!e o& e$e/t&/ moto& the! u!+a$a!/e /a! +e

t&+ute ! e3e&a$ *$a!e a! +a$a!/e /o&&e/to! mae a&e &e.u&e to +e *ut ! to ffe&e!t *$a!e h/h

a&e /a$$e /o&&e/to! *$a!e% #ue to u!+a$a!/e !e&ta fo&/e a! !e&ta /ou*$e +ea&! a&e u+e/te to 3a&,!

$oa a! 3+&ato! et ! them% Fo& a $!ea& &oto& +ea&! ,tem 3+&ato! 3e/to& $!ea&$, &e$ate to

u!+a$a!/e 3e/to& a 3e! +,

he&e @ 3+&ato! 3e/to&4 U u!+a$a!/e 3e/to& a! '!o! a !f$ue!/e /oeff/e!t% The +a/ o+e/t3e

of a!, fe$ +a$a!/! te/h!.ue to f! !f$ue!/e /oeff/e!t f&om a et of 3+&ato! &ea!% I! th

e0*e&me!t tue!t a&e u**oe to tu, the effe/t of u!+a$a!/e ma o! the +ea&! 3+&ato! +oth am*$tuea! *hae% #ete&m!ato! of !f$ue!/e /oeff/e!t /a! +e o!e a!a$,t/a$$, o& &a*h/a$$,% The e/o! metho

emo!t&ate ! the !e0t e0*e&me!t%

PROCEDURE: S,!/h&o!e the !a$ meau&eme!t f$te& f&e.ue!/, th the &otat! f&e.ue!/, a! !ote o!

the 3+&ato! am*$tue a! the t&o+o/o*/ *hae 3a$ue% No *ut a am*$e ma a!,he&e o! the &oto& a!

!ote the 3+&ato! &ea! aa!%

Let @5+e the o&!a$ +ea&! 3+&ato! &ea! a! @1+e the 3+&ato! afte& the am*$e ma M *ut

I!f$ue!/e /oeff/e!t u/h that 4

A &a*h/a$ *&o/eu&e fo& f!! the !f$ue!/e /oeff/e!t emo!t&ate +e$o%

REFERENCE:

1) Theo&, of Me/ha!m a! Ma/h!e +, ;hoh Ma$$/'4 **- 282-2:5

2) @+&ato! Co!t&o$ Ha!+oo' +, B$a'e Mt/ha$

G) IR# Me/ha!a$, ma!ua$%


8/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. ": TWO PLANE DYNAMIC BALANCING OF MULTIDISC ROTOR

EQUIPMENT/EXPERIMENTAL SETUP NAME:DYNAMIC BALANCING MACHINE-II

#,!am/ +a$a!/! ame at e$m!at! +oth the fo&/e u!+a$a!/e a! /ou*$e u!+a$a!/e% I&&e*e/t3e of

!um+e& of u!+a$a!/e *$a!e !um+e& of /o&&e/to! *$a!e to o!$, fo& a$$ & &oto&% Ca$/u$ato! of

/o&&e/to! mae /a! ethe& +e o!e a!a$,t/a$$, o& +, &a*h/a$ metho%

EQUIPMENT DESCRIPTION: A /&a$e o& f&ame /a&&e the haft a! fou& / aem+$,% #/ a&e ha3!

*&o3o! fo& atta/h! the u!+a$a!/e o& /o&&e/to! ma at a!, a!u$a& $o/ato! at th&ee ffe&e!t &a% he!

the &oto& +a$a!/e the f&ame $$ &ema! tato!a&, u&! the &u!!! of the &oto&4 +ut th u!+a$a!/e

atta/he to t the f&ame ta&t mo3! to a! f&o a e$$ a o/$$ate ue to fo&/e a! /ou*$e u!+a$a!/e%

PROCEDURE: Sta&t the moto& a! o+e&3e the f&ame moto! f a!, ! !ta$ /o!to!% Put the u!+a$a!/e

mae a !/ate a! !ote the f&ame moto! afte& th% The! /a$/u$ate the /o&&e/to! mae &a*h/a$$, a!

*ut them ! the /o&&e/to! *$a!e% F&ame hou$ !o +e/ome tato!a&, aa!%

INSTRUCTION:#&a the 'et/h of the &oto& / aem+$, th !e/ea&, me!o!% #&a the &a*h/a$

a!a$, ! a e*a&ate A6 e &a! heet a! atta/h t%

REFERENCE:

1) Theo&, of Me/ha!m a! Ma/h!e +, ;hoh Ma$$/'4 **- 282-2:5

L1

BA

L2 L3

DC


9/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. #: BALANCING OF TWO CYLINDER RECIPROCATING ENGINE MODEL

EQUIPMENT/EXPERIMENTAL SETUP NAME:DYNAMIC BALANCING MACHINE-II

I! a!, mu$t /,$!e& !-$!e e!!e u!+a$a!/e /o!to! a&e of fo$$o! t,*e

Tota$ *&ma&, u!+a$a!/e fo&/e !ot e&o

Tota$ e/o!a&, u!+a$a!/e fo&/e !ot e&o

Tota$ *&ma&, /ou*$e !ot e&o

Tota$ e/o!a&, /ou*$e !ot e&o

Some o& a$$ of thee u!+a$a!/e /o!to! /a! +e e$m!ate +, *&o*e&$, e$e/t! the &e$at3e /&a!' *oto!

Th '!o! a *a3e +a$a!/!% he! thee u!+a$a!/e effe/t a&e /ou!te&a/te +, *utt! +a$a!/! ma t

/a$$e a/t3e +a$a!/!%

PROCEDURE: I! the to /,$!e& &e/*&o/at! e!!e moe$ aut the &e$at3e /&a!' a!$e at 75 e&ee a!

&u! the moe$ a! ee the f&ame moto!% Sm$a&$, et the /&a!' a!$e at 15 e&ee a! o+e&3e the f&ame

moto!% #o the theo&et/a$ a!a$, a! f! out the +a$a!/e /o!to! fo& thee /&a!' a!$e a! /om*a&e th

*&a/t/a$ o+e&3ato!% T&, fo& a/t3e +a$a!/! ! ea/h /ae !o a! f! out hethe& the +a$a!/e /o!to! a

!/ate +, the f&ame moto! m*&o3e o& !ot%

INSTRUCTION: #&a the 'et/h fo& the moe$ +e$o% Fo& a/t3e +a$a!/! e$e/t the aa/e!t *$a!e%


10/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. $: STUDY OF VIBRATION OF SINGLE D.O.F. AND TWO D.O.F. SPRING MASS SYSTEM

EQUIPMENT/EXPERIMENTAL SETUP NAME:SPRING MASS VIBRATION MODEL

I! th e0*e&me!t the moe$ /o!t of to *a&t% I! o!e *a&t e ha3e a ma /o!!e/te to to *&! h/h

&e*&ee!t a !$e e&ee of f&eeom ,tem% I! the e/o! *a&t the&e a&e to ma /o!!e/te to th&ee *&!

h/h &e*&ee!t to e&ee of f&eeom ,tem% @+&ato! !tate ! the moe$ a! !atu&a$ f&e.ue!/, of

o/$$ato! meau&e%

PROCEDURE: F&t the ma ! the %%o%f% moe$ *$a/e a! a$$oe to o/$$ate% Let the tme *e&o +e

T54 the!

o&

Ne0t *$a/e a ma$$ ma m o! the o&!a$ ma M a! !ote the tme *e&o T4 The!

The! t /a! +e e&3e that )D( 2

5

22

5 TTTmM = a!

Thu4 the tff!e of the *&! a! the ma ! the moe$ +oth /a! +e e0*e&me!ta$$, fou! out%

I! the to e&ee of f&eeom moe$ tue!t a&e u**oe to '!o the !ta$ /o!to! fo& f&t moe 3+&ato!

a! e/o! moe 3+&ato! a! the! e0*e&me!ta$$, a**$, thoe /o!to! a! ee the f&t moe a! e/o!

moe 3+&ato!% Fo& ea/h moe 3+&ato! the, $$ !ote the tme *e&o a! /om*a&e th theo&et/a$ 3a$ue%

INSTRUCTION: #&a the 'et/h fo& the moe$ +e$o% Fo& a/t3e +a$a!/! e$e/t the aa/e!t *$a!e%


11/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. %: DETERMINATION OF NATURAL FREQUENCY OF BENDING VIBRATION OF

CANTILEVER BEAM USING FFT ANALYSER

EQUIPMENT/EXPERIMENTAL SETUP NAME: CANTILVER BEAM VIBRATION MODEL

A +eam a to +e a /a!t$e3e& +eam f t> o!e e! f0e a! othe& e! f&ee% he! u/h et !to

3+&ato! t 3+&ate th ma!, f&e.ue!/e '!o! a !atu&a$ f&e.ue!/e% A the +eam a /o!t!uou ,tem4

!um+e& of !atu&a$ f&e.ue!/e a&e !f!te% The $oet of them '!o! a fu!ame!ta$ !atu&a$ f&e.ue!/,% The

$o/u of ma0mum am*$tue *o!t he! the +eam 3+&ate at th f&e.ue!/, '!o! a f&t moe ha*e% I!

th e0*e&me!t !atu&a$ f&e.ue!/, $$ +e fou! out +, f&ee 3+&ato! tet !tate +, m*a/t%

T&'()*:

A. CANTILEVER BEAM WITH TIP MASS

Fo& th /ae Ra,$eh metho 3e a! a**&o0mate o$uto!

J#e&3ato! 3e! ! t&u/tu&a$ ,!am/ +, Ma&o Pa4 ** 12:-12K

he&e E the You! mou$u

I mome!t of !e&ta a+out !atu&a$ a0 +hGD12 fo& &e/ta!u$a& e/to!

m+ ma of +eam4 m ma at the t*

L $e!th of the /a!t$e3e& +eam

B. CANTILEVER BEAM WITHOUT TIP MASS

a) Ra,$eh a**&o0mate metho /a! +e a**$e he&e a$o +, ta'! m 5 h/h 3e

+) Eu$e& Be&!ou$$> +eam theo&, 3e a! e0a/t o$uto!

62

81%G

Lm

EIf

= he&em ma *e& u!t $e!th of the +eam


12/22

DESCRIPTION OF THE SETUP AND INSTRUMENTAION

The !t&ume!t &e.u&e a&e

a) Peoe$e/t&/ 3+&ato! t&a!u/e& o& a//e$e&omete&

+) @+&ato! mete&

/) Fat Fou&e& T&a!fo&m (FFT) a!a$,e&

The a//e$e&omete& meau&e the 3+&ato! a//e$e&ato! a! 3e out /ha&e out*ut h/h /o!3e&te !to 3o$tae!a$ ! the 3+&ato! mete& a! the! e!t to FFT a!a$,e&% Th !a$ ! tme oma! a! t&a!fo&me !to

f&e.ue!/, oma! ! the a!a$,e& +, Fat Fou&e& Te/h!.ue e3e$o*e +, Too'e, a! Coo$e, a&ou! 17:: !

MIT4 U!te State% The f&e.ue!/, e/om*oto! *$a,e o! the o/$$o/o*e of the a!a$,e& a a *e/t&um

fu!ame!ta$ f&e.ue!/, /a! +e !ote%

PROCEDURE: F&t the $e!th a! /&o e/to!a$ eta$ a&e meau&e a! theo&et/a$ 3a$ue of !atu&a$

f&e.ue!/, a&e /a$/u$ate +, 3a&ou metho 3e! a+o3e% I! the e0*e&me!t f&ee 3+&ato! !tate +, htt!

the t* +, a hamme& a! &e/o&! the *e/t&um o! FFT a!a$,e&% Sm$a&$, !e0t a /o!/e!t&ate ma atta/he

to the t* of the +eam a! f&e.ue!/, &ea! ta'e!% The! e0*e&me!ta$ &ea! a&e to +e /om*a&e th

theo&et/a$ o!e%

INSTRUCTION: #&a a /hemat/ a&am of the etu* a$o! th !t&ume!tato!% Comme!t o! *o+$e

&eao! h, theo&et/a$ 3a$ue of !atu&a$ f&e.ue!/, a&e ffe&e!t f&om e0*e&me!ta$ o!e% Stu, fu&the& o!

o&'! *&!/*$e of a//e$e&omete&4 3+&ato! mete& a! FFT a!a$,e&%

REFERENCE:

1) St&u/tu&a$ #,!am/ +, Ma&o Pa

2) Me/ha!/a$ @+&ato! +, Mo&e He!/'$e

G) I!t&ume!t /ata$oue


13/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1+: DETERMINATION OF NATURAL FREQUENCY OF BENDING VIBRATION OF

CANTILEVER BEAM ,, RESONANCE APPROACH

EQUIPMENT/EXPERIMENTAL SETUP NAME:BEAM VIBRATION ON EXCITER SETUP

I! th e0*e&me!t a! e$e/t&oma!et/ e0/te& ue to 3+&ate the /a!t$e3e& +eam% The e0/te& /o!!e/te

th a! o/$$ato& u/h that the f&e.ue!/, of o/$$ato! /a! +e 3a&e o3e& a &a!e a! a$o the am*$tue of

e0/tato! /a! +e /ha!e% Th *&o/eu&e +ae o! the /o!/e*t that he!e3e& a 3+&at! ,tem e0/te at

o!e of t !atu&a$ f&e.ue!/e4 the &e*o!e +e/ome 3e&, $a&e a! f am*! a+e!t t $$ +e/ome !f!te$,

$a&e% Th a$o '!o! a &eo!a!/e%

PROCEDURE:The etu* /o!t of fou& +eam of ffe&e!t $e!th /o!!e/te th a 3+&at! f0e th the

e0/te&% The o/$$ato& ma!tue 'e*t at a $e3e$ o that 3+&ato! of the +eam a&e ut 3+$e +ut !ot 3e&,

hh% The f&e.ue!/, of o/$$ato& &aua$$, !/&eae t$$ &eo!a!/e !ot/e ! a +eam% The o/$$ato&

f&e.ue!/, !ote !o a! th the !atu&a$ f&e.ue!/, of the +eam h/h ha ho! the &eo!a!/e

*he!ome!o!% Sm$a&$, !atu&a$ f&e.ue!/e of othe& +eam a&e a$o o+ta!e% The e0*e&me!ta$ 3a$ue a&e the!

/om*a&e th theo&et/a$ 3a$ue f&om Eu$e&-Be&!ou$$ +eam theo&,%

REFERENCE:

1) Me/ha!/a$ @+&ato! +, Rao a! ;u*ta


14/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 11: DETERMINATION OF MATERIAL DAMPING OF STEEL CANTILEVER BEAM BY FREE

VIBRATION TEST

EQUIPMENT/EXPERIMENTAL SETUP NAME:BEAM VIBRATION MODEL

Mate&a$ am*! !he&e!t$, *&ee!t ! a$$ the mate&a$ to ffe&e!t e0te!t% Stee$ ha a $o am*! 3a$ue

he&ea that ! /at-&o! hh% The *&ee!/e of am*! he$* to $mt the 3+&ato! $e3e$ ! the ,tem

*a&t/u$a&$, !ea& &eo!a!/e% he! am*! ! a ,tem o!$, ue to mate&a$ am*!4 the &eu$t! moto!

u!e& am*e4 ! h/h u//e3e *ea' e/a, e0*o!e!ta$$,% I! u/h /ae a te&m $oa&thm e/&eme!t

ef!e a

he&e Y1a! Y2a&e the to u//e3e *ea' am*$tue%

f the *ea' am*$tue meau&e a&e !ot u//e3e +ut a, f&t *ea' a! &th*ea' the!

Loa&thm/ e/&eme!t &e$ate to am*! fa/to& a 3e! +,

PROCEDURE: Co!!e/t the !t&ume!tato! th the /a!t$e3e& +eam a &e.u&e ! the e0*e&me!t o!

ete&m!ato! of !atu&a$ f&e.ue!/, of +e!! 3+&ato! of a /a!t$e3e& +eam +, u! FFT a!a$,e&% I!tate f&ee

3+&ato! ! the +eam a! &e/o& the 3+&ato! !a$ ! tme oma! o! FFT a!a$,e&% Th $$ a**ea& a

!uoa$ !a$ th e/a,! am*$tue% Meau&e the am*$tue of a!, *ea' a! &th*ea' afte&% Ca$/u$ate

$oa&thm/ e/&eme!t a! et the am*! fa/to& of tee$% A$o f&om the *$a, !ote the /u&o& 3a$ue of

u//e3e *ea' a! &a the t&a/e o! &a*h *a*e&%

REFERENCE:

1) St&u/tu&a$ ,!am/ +, Ma&o Pa

2) @+&ato! /o!t&o$ +, A%% Ma$$/'



15/22

Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 12: DETERMINATION OF CRITICAL SPEED OF ROTORS

EQUIPMENT/EXPERIMENTAL SETUP NAME: WHIRLING OF SHAFT SETUP

he! a &oto& mou!te o! a haft4 t /e!t&e of ma oe !ot /o!/e th the /e!t&e$!e of the haft% Thee

&eu$t !to a! u!+a$a!/e !e&ta fo&/e a/t! he! the &oto& ! &otato! a! the &oto& ef$e/t a! +e! out

of the &otat! /e!t&e$!e% The *ee at h/h th ef$e/to! &ea/he t ma0mum a! the haft &oto& ,tem fou! to 3+&ate 3o$e!t$, ! t&a!3e&e &e/to! /a$$e the /&t/a$ *ee% Sm*$, tat! /&t/a$ *ee

/o&&e*o! to the !atu&a$ f&e.ue!/, of +e!! 3+&ato! of the &oto& ,tem%

I! !ut&a$ a**$/ato! &otat! ma/h!e a&e to +e e!e /a&efu$$, u/h that t o*e&at! &*m &ema!

aa, f&om the &oto& /&t/a$ *ee% he! o*e&at! &*m hhe& tha! f&t /&t/a$ *ee (! /ae of f$e0+$e

&oto& u/h a tu&+!e) the &oto& ha to +e a//e$e&ate /a&efu$$, th&ouh the /&t/a$ *ee u/h that !ot mu/h

tme 3e! at the /&t/a$ *ee fo& 3+&ato! +u$-u*%

T&'()*:The m*$et fo&mu$a fo& a !$e / &oto&

( I! th fo&mu$a ma of the haft !ot /o!e&e)

#u!'e& $a,> metho /o!e& ma of the haft a! a$o a**$/a+$e fo& mu$t/ &oto&% Th 3e

he&e f5 the !atu&a$ f&e.ue!/, of haft a$o!e

A! f !atu&a$ f&e.ue!/, of the th/ o! the haft m a! L ma a! $e!th of the haft &e*e/t3e$,%

A$$ the &e$ato! 3e! a+o3e +ae o! the aum*to! that the +ea&! /o!to! a&e e.u3a$e!t to m*$,

u**o&te /o!to!%

PROCEDURE: F&t meau&e haft amete& a! $e!th of the haft +etee! the +ea&!4 ma m of the /%I!ta$$, the haft a$o!e &otate a! *ee 3a&e f&om a $o 3a$ue &aua$$, u* t$$ /&t/a$ *ee

o+e&3e th&ouh $a&e ef$e/to!% RPM meau&e th the he$* of ta$ !f&a&e ta/homete&% The! *ut the

/ o! the haft a! meau&e the /&t/a$ *ee ! the ame a,% It $$ +e ee! that the e0*e&me!ta$ 3a$ue a&e

.ute ffe&e!t f&om theo&et/a$ o!e% E0*$a! h,

REFERENCE:

1) E$eme!t of @+&ato! A!a$, +, L% Me&o3t/h

2) Me/ha!/a$ @+&ato! +, Te% Mo&e He!/'$eG) Theo&, of ma/h!e +, S%S% Ratta! **% 82:-8G6


16/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 13: STUDY OF FORCED VIBRATION OF A PLATE SUPPORTED ON SPRINGS MODELLED AS

SINGLE D.O.F. SYSTEM

EQUIPMENT/EXPERIMENTAL SETUP NAME:DYNAMIC VIBRATION ABSORBER MODEL

A *&! ma !$e e&ee of f&eeom moe$ he! e0/te +, a tea, tate ha&mo!/ ta&t 3+&at! at the

ame f&e.ue!/, a that of the e0/tato! fo&/e% The 3+&ato! am*$tue of the ma $$ e*e! u*o! the

e0/tato! f&e.ue!/, a! am*! *&ee!t ! the ,tem a 3e! u!e&

he&e 3+&ato! &e*o!e4 F5 a**$e ha&mo!/ fo&/e4 & the &ato of e0/tato! f&e.ue!/, to !atu&a$

f&e.ue!/, of the ,tem a! Q am*! &ato% I! a ,tem he&e am*! *&ee!t 3e&, $o4 *ea' &e*o!e

!ot/e a&ou! t !atu&a$ f&e.ue!/,%

EQUIPMENT DESCRIPTION:A .ua&e *$ate u**o&te o! fou& *&! at t fou& /o&!e& o that t /a! +e

aume a a !$e e&ee of f&eeom moe$ ! h/h m the ma of the *$ate a! the e.u3a$e!t

tff!e of a$$ the *&!% A! e0/te& *$a/e +e$o the *$ate at t /e!t&e *&o3e the e0/tato!% E0/te&

*$a/e /o!!e/te to a! o/$$ato& h/h *&o3e the 3a&a+$e f&e.ue!/, ha&mo!/ !a$ fo& e0/tato!% A!

a//e$e&omete& th a 3+&ato! mete& ue fo& 3+&ato! meau&eme!t%

PROCEDURE: Put a! a//e$e&omete& o! the *$ate a! /o!!e/t t to the 3+&ato! mete&% ee* the e$e/to& '!o+ of

3+&ato! mete& at *$a/eme!t% St/h o! the o/$$ato& a! 3a&, the f&e.ue!/, f&om a $o 3a$ue a, 8 H to

&aua$$, fu&the& to at $eat 1%8 tme the &eo!a!/e f&e.ue!/,% O3e& th f&e.ue!/, !te&3a$ !ote the 3+&ato!

&ea! at e3e&a$ f&e.ue!/, *o!t a! &a the &e*o!e /u&3e 3 ro! a &a*h *a*e&% F&om the &e*o!e *$ot

f! the !atu&a$ f&e.ue!/, of the *$ate a! /a$/u$at! the ma of the *$ate f! the *&! tff!e '%


17/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1: STUDY OF USE OF DYNAMIC VIBRATION ABSORBER ON A VIBRATING PLATE


I! ma!, !ut&a$ ma/h!e fou!ato! ,tem4 the 3+&ato! of the ma/h!e o! the fou!ato! /a! +e moe$$e

a a *&! ma ,tem% I! u/h a&&a!eme!t4 f the e0/tato! fo&/e *&ou/e ! the ma/h!e ha3e a f&e.ue!/,

!ea& to the !atu&a$ f&e.ue!/, of the ma/h!e fou!ato! ,tem the!4 e0/e3e$, $a&e 3+&ato! o//u& ue to

&eo!a!/e% Th ha**e! he!

If a e/o!a&, *&! ma ,tem th ma M1a! *&! of tff!e 1 ae to the *&ma&, ,tem u/h

that

The! the 3+&ato! of the *&ma&, fou!ato! ,tem et &eu/e to e&o% He!/e the e/o!a&, *&! ma

,tem /a$$e ,!am/ 3+&ato! a+o&+e& ,tem%

PROCEDURE:F&om the e0*e&me!t o! Stu, of fo&/e 3+&ato! of a *$ate u**o&te o! *&! moe$$e a

!$e %o%f% ,tem4 e a$&ea, '!o the !atu&a$ f&e.ue!/, of *$ate -*&! ,tem% E0/te the *$ate at th

f&e.ue!/, a! !ote the 3+&ato! *$a/eme!t 3a$ue% Fo& th a! a//e$e&omete& a! a 3+&ato! mete& a&e to +e

/o!!e/te a /ue +efo&e% Ne0t4 atta/h the e/o!a&, *&! ma ,tem a! aa! e0/te the *$ate at theame !atu&a$ f&e.ue!/,% Th tme the 3+&ato! of the *$ate $$ +e !ot/e to +e 3e&, $e /om*a&e to *&e3ou

3a$ue% Note the 3+&ato! &ea! !o% F! out ma a! tff!e of e/o!a&, ,tem a! /omme!t hethe&

t a tu!e a+o&+e& o& !ot% Suet ho ,ou /a! tu!e t fu&the& to &eu/e the 3+&ato! of the *$ate

REFERENCE:

1) Me/ha!/a$ @+&ato! +, Rao ;u*ta

2) Theo&, of @+&ato! +, %T% Thomo!


18/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1!: STUDY OF USE OF TUNABLE DYNAMIC VIBRATION ABSORBER ON A MOTOR

FOUNDATION BEAM


Th e0*e&me!t m$a& to e0*e&me!t !o% 16 ! the theo&et/a$ /o!/e*t +ut the etu* $ht$, ffe&e!t

I!tea of a! e0/te& e ha3e a moto& at the /e!t&e of the u**o&t! +eam h/h ha3! ome u!+a$a!/e that

a/t a the ou&/e of e0/tato! at the &otat! f&e.ue!/,% he! the &otat! f&e.ue!/, /$oe to the !atu&a$

f&e.ue!/, of the +eam h/h /a! +e aume to +e m*$, u**o&te $a&e 3+&ato! $$ +e !ot/e ! the

+eam ue to &eo!a!/e% The tu!ea+$e a+o&+e& ,tem /o!t of to ma$$ /a!t$e3e& *$ate o! h/h a ma

/a! mo3e a! thu 3a&, the !atu&a$ f&e.ue!/, of the e/o!a&, ,tem% The *oto! of the ma fo& h/h the

e/o!a&, ,tem !atu&a$ f&e.ue!/, mat/he th that of the *&ma&, ,tem 3e the tu!e /o!to! a the!

the *&ma&, ,tem $$ ha3e e&o o& m!mum 3+&ato!%

PROCEDURE:th a *ee &eu$ato& &aua$$, 3a&, the *ee of the moto& a! +&! t to the &eo!a!/e

/o!to! he! $a&e 3+&ato! $$ +e !ot/e ! the u**o&t! +eam% Note the &otat! f&e.ue!/, +, a ta$

ta/homete&% St/h off the moto& a! atta/h the a+o&+e& ,tem a! aa! &u! the moto& to t &eo!at!

!atu&a$ f&e.ue!/,% Aut the *oto! of the ma o that 3+&ato! &eu/e to t m!mum% Re*o&t the *oto!

of the tu!! ma f&om f&ee e!%


19/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1": STUDY OF FORCE TRANSMISSIBILTY AT DIFFERENT EXCITATION FREQUENCIES


Ma/h!e a&e ofte! mou!te o! *&! a! am*e& o that the fo&/e e!e&ate ! the ma/h!e o !ot et

t&a!mtte to the &ou! o& fou!ato!% Th &e.u&e to *&ote/t othe& ma/h!e ! the !eh+ou&hoo a! to

e!u&e +ette& o*e&at! e!3&o!me!t fo& o&'! *e&o!!e$% If e /o!e& a !$e e&ee of f&eeom *&!

ma ,tem ! h/h F5 the fo&/e a**$e o! the ma4 Ft the fo&/e t&a!mtte to &ou! the!

t&a!m+$t, ef!e a4

he&e4 & the &ato of e0/tato! f&e.ue!/, to !atu&a$ f&e.ue!/,% If the am*! a+e!t o& 3e&, $o the!

Th mea! t&a!m+$t, $$ +e $o f & 2

PROCEDURE:The $oa /e$$ /o!!e/te th the e0/te& at the /e!t&e of the *$ate 3e 3a$ue of F5he&ea the

$oa /e$$ /o!!e/te th the u**o&t! *&! meau&e the t&a!m+$t, fo&/e F t% Co!!e/t a$$ the $oa /e$$

to $oa !/ato&% E0/te the *$ate th the he$* of o/$$ato& at ffe&e!t f&e.ue!/e a! meau&e the $oa /e$$

&ea!

F5 $oa /e$$ &ea! of o!e /o!!e/te th e0/te&

Ft um of $oa /e$$ &ea! of a$$ /o!!e/te th u**o&t! *&!

At 3a&ou f&e.ue!/e &a!! f&om : H to 28 H !ote the 3a$ue of F 5 a! Ft a! /a$/u$ate t&a!m+$t, TR

P$ot the 3a&ato! of TR th f&e.ue!/, o! a &a*h *a*e&%


20/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1#: STUDY OF GYROSCOPE

EQUIPMENT/EXPERIMENTAL SETUP NAME: GYROSCOPE

he!e3e& a *!!! /om*o!e!t ha t *!!! a0 &otat! a+out a!othe& a0 /a$$e *&e/eo! a0 a

&ea/to! /ou*$e a/t o! the /om*o!e!t a$o! th& a0 a! th /ou*$e '!o! a ,&o/o*/ /ou*$e 3e!

+,

T ,&o/o*/ /ou*$e4 I ma mome!t of !e&ta of the *!!! / a! a! a&e &e*e/t3e$, the

*&e/eo!a$ a! *! 3e$o/te%

Th &e$ato!h* 3a$ o!$, u!e& the /o!to! that-

a) S*! 3e$o/t, /o!ta!t

+) P&e/eo!a$ 3e$o/t, /o!ta!t %e% tea, *&e/eo!

/) A!$e +etee! a0 of *! a! a0 of *&e/eo! 75 e&ee%

PROCEDURE: Sta&t the moto& &3! the *!!! / a! +&! the *!!! 3e$o/t, to a ta+$e 3a$ue

Be/aue of $a&e !e&ta of the / the a//e$e&ato! of the / $$ +e $o% Meau&e the RPM of the / th

ta$ ta/homete&% B&! the RPM to a 3a$ue a&ou! 1855 RPM% Put a '!o! ma o! the *a! of the ,&o/o*e

h/h $$ &eu$t ! a/t3e /ou*$e e.ua$ to mgl% Th a/t3e /ou*$e $$ ma'e the *!!! / *&e/e a&ou!

the 3e&t/a$ a0% See that the *&e/eo! ! a ho&o!ta$ *$a!e o that the a!$e +etee! the a0 of *! a!

a0 of *&e/eo! 75 e&ee% Note o! the a!$e of *&e/eo! o3e& a tme T a! thu /a$/u$ate

*&e/eo!a$ 3e$o/t,% S*! 3e$o/t, aa! meau&e th the ta/homete& a! the a3e&ae of to 3a$ue

/o!e&e% The! the mome!t of !e&ta of the *!!! / /a! +e /a$/u$ate f&om the &e$ato!h* 3e!

ea&$e&% A$o4 the ame /a$/u$ate theo&et/a$$, f&om the eomet&, of the /%


21/22


Ro$$% No%" ------------------------------------------------------------------------------------------------------------- Ma&'"

EXPERIMENT NO. 1$: STUDY OF -UMP,OFF PHENOMENON IN A CAM FOLLOWER MECHANISM

EQUIPMENT/EXPERIMENTAL SETUP NAME: CAM-FOLLOWER MECHANISM MODEL

I! th e0*e&me!t the etu* /o!t of a! e//e!t&/ /am a! a &o$$e& fo$$oe& th a fo$$oe& *&! hoe

*&e/eo! /a! +e aute% he! the /am &otate4 e3e&a$ fo&/e +a$a!/e ea/h othe& at the /am fo$$oe&

!te&fa/e% The, a&e !e&ta fo&/e4 *&! fo&/e4 eht of the fo$$oe&4 *&o/e $oa4 et/% If u&! the moto! at

a!, tme the /o!ta/t fo&/e +e/ome e&o the! the fo$$oe& $$ $ooe /o!ta/t th the /am a! mo3e

!e*e!e!t$, t$$ the /o!ta/t eta+$he% Th *he!ome!o! /a$$e um*-off *ee% um*-off *ee

e*e! o! /am *&of$e4 t,*e of fo$$oe&4 *&! tff!e a! *&e$oa4 fo$$oe& ma et/% um*-off *ee fo&

&o$$e& fo$$oe& $$ +e ffe&e!t f&om f$at fa/e fo$$oe& e3e! f /am a! fo$$oe& a&e the ame%

PROCEDURE: F! out a$$ &e.u&e !fo&mato! $'e /am e//e!t&/t,4 fo$$oe& ma4 *&! tff!e4 et/%

#e&3e the e.uato! fo& /o!ta/t fo&/e at the /am fo$$oe& !te&fa/e fo& th *a&t/u$a& /om+!ato! a! /a$/u$ate

the um*-off *ee% The! ta&t &otat! the /am a! &aua$$, !/&eae the *ee t$$ the !oe /ha&a/te&t/

/ha!e a$$ of a ue! !/at! um*-off% Meau&e the *ee !o h/h /a! +e /o!e&e a the um*-off

*ee% A +ette& a, of e!tf,! the um*-off to meau&e the fo$$oe& moto! +, a !o! /o!ta/t t,*e *&o+e

a! o+e&3e the *$a, o! a! o/$$o/o*e% The e&3ato! fo& the um*-off *ee to +e o!e +, the tue!t

a! to +e &e*o&te a$o! th a 'et/h of the /am fo$$oe& me/ha!m%


22/22

Date post:	01-Jun-2018
Category:	Documents
Upload:	munnavar29
View:	229 times
Download:	0 times

TOM_2 Lab Manual Corrected 20 Dec12

Documents