8/13/2019 SOM 1(1)

1/6

1

R-2008

BATCH 2011-15

SIFET COLLEGE OF ENGINEERING

DEPARTMENT OF MECHANICAL ENGINEERING (UNIT-I)

ME2254 STRENGTH OF MATERIAL

(100% NUMERICAL)

UNIT ISTRESS AND STRAIN

STRESS STRAIN DEFORMATION OF SOLIDS

(Rigid and Deformable bodies Strength, Stiffness and Stability Stresses; Tensile,

Compressive and Shear Deformation of simple and compound bars under axial load

Thermal stress lastic constants Strain energy and unit strain energy Strain energy

in uniaxial loads!"

1. A steel !" #$$ %% l&'. Its t& e'*s !"e 4$ %% !'* +$ %% ,' *,!%ete" !'* te le't

& e!/ "&* ,s 2$$ %%. te %,**le 0&"t,&' & te !" ,s 15 %% ,' *,!%ete" !'* 5$$ %%

l&'. I te !" ,s se/te* t& !' !3,!l te's,le l&!* & 15 N *ete"%,'e 1) st"ess ,' te e!/

se/t,&' 2) t&t!l e3te's,&'. 6T!7e E82$$91$:N;%%2< (1=)

#! Define stress!

$! %hat is strain&

'! State the oo)e*s la+!

! State the -oisson ratio!

2!A steel "&* & 5$ %% *,!%ete" ,s se/te* t& ! &"/e !s s&' ,' ,. F,'* te el&'!t,&'

& te "&*. T!7e E82>1$e5 N;%%2. (1=)

#! Define .oungs modulus!

IFETCE/MECH(UNIT-I)/Mr M.JAIGESAN/II YEAR/I SEM/ME225!/S"M /#B$ST-ER 1.0

8/13/2019 SOM 1(1)

2/6

2

R-2008

BATCH 2011-15

$! %hat is lateral strain&

'! Define rigidity modulus!

! %hat is compressive stress&

+. C!l/l!te te &"/es P+ ,' te ,. !'* /!'e ,' le't & E82$$GN;%2.T!7e

P1812$N?P2822$N?P481=$N (1=)

#! State tensile strain!

$! Define compressive strain

'! Define shear strain!

! %hat do you understand by strain&

4!A 2$ %% *,!%ete" !" !s se/te* t& !' !3,!l 0ll & 4$N !'* /!'e ,' *,!%ete"!s &'* t& e $.$$+@22 %%. F,'* te 0&,s&'s "!t,& %&*ls & el!st,/,t !'* l7

%&*ls , te se!" %&*ls & te %!te",!l & te !" ,s B=.#2+GP!. (1=)

#! %hat do you understand by poisson ratio&

$!/ive the effect of bul) modulus&

' /ive the types of elastic constants&

%hat is direct stress&

5.A /&%0&'* !" & le't 5$$ %% /&'s,sts & ! st",0 & !l%,'% 4$%%

,*e315%% t,/7 !'* ! st",0 & steel 4$%% ,*e31$%% t,/7 ",,*l &,'e* !t e'*s. I te!" ,s se/te* t& ! l&!* & 5$N,'* te st"ess *eel&0e* ,' e!/ %!te",!l !'* te

e3te's,&' & te !". T!7e E &" !l%,'%81.131$5!'* steel 2.131$5N;%%2. (1=)

#! %hat is composite bar&

$! %hat do you understand by compound bar&IFETCE/MECH(UNIT-I)/Mr M.JAIGESAN/II YEAR/I SEM/ME225!/S"M /#B$ST-ER 1.0

8/13/2019 SOM 1(1)

3/6

R-2008

BATCH 2011-15

'! %hat are the advantages of composite bar&

! 0ention the application of compound bar!

=.A steel & "&* & 2$%% *,!%ete" ,s e'/l&se* /e't"!ll ,' ! &ll& /&00e" te &

e3te"'!l *,!%ete" +$%% !'* ,'te"'!l *,!%ete" 25%%.Te /&%0&s,te !" ,s te' se/te*

t& !' !3,!l 0ll & 4$ N.F,'* te st"esses ,' te "&* !'* te. T!7e ES82$$N;%%2 !'*

EC81$$N;%%2. (1=)

#! %hat are the uses of composite bars&

$! /ive the principles of composite bar!

'! %rite the e1uation of composite bar!

! /ive some examples of composite bars!

B.A "e,'&"/e* /&'/"ete /&l%' +$$32$$%% ,s "e,'&"/e* ,t @ steel "&*s ,t !

t&t!l !"e! & 1@2$%%2.Te /&l%' /!"",es !' !3,!l l&!* & 4$$N.I te %&*ls &

el!st,/,t & steel ,s 1@ t,%es t!t & /&'/"ete ,'* te st"esses ,' /&'/"ete !'* ,' steel. (1=)

#! %hat are the applications of concrete&

$! /ive the order of .oungs modulus of concrete!

'! %hat is the order of poison ratio of concrete&

! Compare the stress of concrete and steel!

@.A ' %et!l "&* 25%% *,!%ete"s/"ee* !t te e'*s 0!sse* t"& ! steel

te 25%% !'* +$%% ,'te"'!l !'* e3te"'!l *,!%ete"s "es0e/t,el. Te 'ts &' te "&*

!"e s/"ee* t,tl &e &' te e'*s & te te. F,'* ,'te's,t & st"ess ,' e!/ %et!l e'

te /&%%&' te%0e"!t"e ",ses 2$$*e C.T!7e /&e,/,e't & e30!'s,&' & steel8=31$e-

=;*eF !'* &" G' %et!l 1$31$e-=;*e;F.&'s %&*ls & te steel 82$$GP! !'* &"

G' %et!l 1$$ GPA (1=)

#! Define temperature stress!

$! %hat is the effect of temperature in calculation of stress&

'! Define coefficient of linear expansion!

! Define temperature strain!

#. A C&%0&s,te !" %!*e 0 & !l%,',% !'* steel ,s ,"%l el* etee' t&

',el*,' s00&"ts !s s&' ,' ,. A' !3,!l l&!* & 2$$N ,s !00l,e* !t !t +2$7.F,'*

te st"esses ,' e!/ %!te",!l e' te te%0e"!t"e ,s +B$7.T!7e %&*ls & el!st,/,t &

!l%,',% ,s B$G0! !'* 21$GP! "es0e/t,el. T!7e /&e,/,e't & te"%!l e30!'s,&' &"

!l%,',% !'* steel !"e 2431$e-=;7 1231$e-=;7 "es0e/t,el. (1=)

IFETCE/MECH(UNIT-I)/Mr M.JAIGESAN/II YEAR/I SEM/ME225!/S"M /#B$ST-ER 1.0

8/13/2019 SOM 1(1)

4/6

8/13/2019 SOM 1(1)

5/6

8/13/2019 SOM 1(1)

6/6

&

R-2008

BATCH 2011-15

$! Define elastic deformations

'! %hat is plastic deformation

! Define limit of proportionality!

1@. C!l/l!te te &'s %&*ls & ",,*,t !'* l7 %&*ls & ! /l,'*",/!l

!" & *,!%ete" 25%% !'* le't 1.=%.I te l&',t*,'!l st"!,' ,' ! !" *",' te's,le

st"ess ,s &" t,%es te l!te"!l st"!,'. F,'* te /!'e ,' &l%e e' te !" ,s se/te*

t& ! *"&st!t,/ 0"ess"e & 1$$N;%%2 !'* t!7e E81>1$5N;%%2. (1=)

#! %hat is longitudinal stress&

$! Define longitudinal strain

'! %hat is transverse stress&

! Define transverse strain!

1#. T& s,%,l!" "&'* !"s A !'* !"e e!/ +$$%% l&' 2$%% *,!%ete" &"

le't 1$$%% 4$ %% *,!%ete" &" ! le't 2$$%% !'* 2$%% *,!%ete" &" le't &

2$$%% 4$%% *,!%ete" &" le't & 1$$%%. M!3,%% st"ess 0"&*/e* te s!%e

el& &' te !" . I te !" ,s !ls& st"esse* t& 1$$ MP!. Dete"%,'e te "!t,& & e'e"

st&"e* te !" !'* A. (1=)

#! %hat is tension in the rod&

$! Define permissible stress!s

'! %hat is true stress&

! Define true strain

2$. A Steel /e l&/7 & 5$%% s,*e ,s se/te* t& ! &"/e & ='(te's,&')@N

(/&%0"ess,&') !'* 4'(/&%0"ess,&') !'* 47'(te's,&') !l&' 3 !'* *,"e/t,&'

"es0e/t,el. Dete"%,'e /!'e ,' &l%e & te l&/7. T!7e E !s 2$$GP! !'* % !s 1$;+.

(1=)

#! %hat is instantaneous stress&

$! %hat is instantaneous strain&

'! %hat is normal stress&

! Define simple stress!

4! Define compound stress!

IFETCE/MECH(UNIT-I)/Mr M.JAIGESAN/II YEAR/I SEM/ME225!/S"M /#B$ST-ER 1.0