Ensayo Flexion Mecanica

UNIVERSIDAD DISTRITAL DISTRITAL FRANCISCO JOSÉ DE CALDAS FACULTAD DE INGENIERÍA PROYECTO CURRICULAR DE INGENIERÍA INDUSTRIAL LABORATORIO MECÁNICA APLICADA MSC.ING. LEONARDO E EMIRO MIRO CONTRERAS BRAVO 10 DE NOVIEMBRE 2016

ENSAYO DE FLEXIÓN MATERIAL: acero 1040 Karen Haidith Mosquera Villamil Camilo Andrés Cruz Contreras Jessica monsalo

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20131015214 20132015124 20141015402

n4%n&), "(*&#-( , %n, '%), 3)( n( $n), )%3&%),.

/# /#n n 4(*3 4(*3))"# "#n n Palabras claves: !(n$,4#n !,"#-,- "'%)( 3!,"#-,-. I. INTRODUCCIÓN Un 4%)3( "&+ "(*&#-( , /#n "# !," '%)," 7% ,4&8,n "(5) %n ! &#n-n , #n-%4#) &),44#n n %n, %n, 3,)& ,)& - "% "44 "44# #n n &),n" ),n"9 9)", )",! !  4(*3)"#n n !, "44#n )"&,n&. E! n",( - /# /#n n " ,3!#4 ,3!#4, , 3,), 3,), -& -&)* )*#n #n,) ,) 4(n" 4(n"&, &,n& n&" " !+","  3)(3#-,-" - !(" *,&)#,!". II.

OBJETIVOS. I-n&# &#:4 :4,) ,)  ,n,! ,n,!# #,) ,) ,"34 ,"34&( &("" General. I-n )!9 )!9,n ,n&" &" ;( 4,),4 4,),4&) &)<"& <"( #4("" ,4) ,4)4, 4, - !, /#5#!#-,- -! ,!%*#n#( ,n,!#,n-( %n, 3)(5&, - -#4=( *,&)#,! n ! n",( - /#n ,! ") "(* "(*&# &#-, -, , %n, %n, '%) '%), , 4n& 4n&), ),!!  "#*> "#*>&) &)#4 #4, , )"34&( , "%" ,3((".   •

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Espec!c"s. C(n(4) %n( - !(" 3)#n4#3,!" *>&(-(" - 3)% 3)%5, 5, 3() 3() !(" !(" 4%,! 4%,!" " " 3%3%-  (5& (5&n n)) 3)(3#-,-" - !(" *,&)#,!". An,!# An,!#, ,)) ! 4(*3 4(*3() ()&, &,*# *#n n&( &( -! -! ,!%* ,!%*#n# #n#( ( ')n& , '%)," (3%"&," 3)3n-#4%!,)" , !, "44#n &),n"9)",! - !, *#"*,. C(*3)n-) 4(n ,4&#&%- !, *&(-(!($<,  3)(4-#*#n&(" %",-(" n ! n",(.

III. #$RCO TEORICO a% Prue Prueba ba &e &e 'le( 'le()* )*n n L, /# /#n n " !, -'( -'()* )*,4 ,4#n #n - %n !* !*n n&( &( ,!,) ,!,)$,$,-( ( n -#) -#)44 44# #n n 3)3 3)3n n-# -#4% 4%!,) !,) , "% ? ? !(n$#&%-#n,!. En !, 3)%5, !, 4,)$, " ,3!#4, n *-#( - -(" 3%n&(" - ,3((.

M-# M-#,n ,n& & >"& >"& *>&( *>&(-( -( " 3%3%-n n -& -&)* )*#n, #n,)) -#')n&" -#')n&" 3)(3#-,-" 3)(3#-,-" - !(" *,&)#,!" %n, - "&," " !, -%4&#!#-,- !, 4%,! =,4 )')n4#, , !, 4,3,4#-,- - -'()*,4#n 4%,n-( ! *,&)#,! "

')+. 1 Esquema de carga para fexión.   Esuerzo:

σ =  

8  Pl

πd

3

Deormación: ε=

( ∆ l)6 d l

2

b) Propi Propieda edades des del acer acero. o.

 TABLA  TABLA I. P)(3#-,-" 7%<*#4,"  '<"#4," ,4)(

F%n&@ V) V) n 5#5!#($),'<, 5# 5!#($),'<, n%*),! . IV.

PROCEDI#IENTO.

a) Descri Descripci pción ón del del equi equipo. po.

#a,u)nar)a: U0A.

M+7% M+7%#n #n, ,

%n#9 %n#9) )", ",!!

- n", n",( (

UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS FACULTAD DE INGENIERÍA PROYECTO CURRICULAR DE INGENIERÍA INDUSTRIAL LABORATORIO MECÁNICA APLICADA MSC.ING. LEONARDO EMIRO CONTRERAS BRAVO 10 DE NOVIEMBRE 2016

Fig. 3 Máquina Universal de Ensayos (U !"  # $%ima&zu' b) descripción del procedimiento.

 M-#)

 )$#"&),) &(-," !," -#*n"#(n" -! 3)(5!*, %",n-( ! 4,!#5),-()  %n *#4)*&)(. É"&," *-#-," ")+n %",-," 3,), -&)*#n,) ! *(*n&( - #n)4#, I - !, 9#$,.

 R$#"&),) !, *-#-, - !, !(n$#&%- -

!, 3)(5&, ( ,7%!!, -#"&,n4#, n&) !(" 3%n&(" - !, *,7%#n, 7% =,4n 4(n&,4&( 4(n !, 3)(5!&, ,"< 4(*( "% -#,*&)(.  C(!(4,) !, 3)(5&, n ! 7%#3(

,"$%),n-(" - 7% =,, 7%-( 5#n 4(!(4,-, :n,!*& " -5 4,!#5),) ! 7%#3(  !(" -'()*#*&)(" ,3!#4,n-( 4,)$, ,! "#"&*,  4(!(4,n-( !," !4&%)," n 4)(".

3% L," n()*," ASTM E20 ISO   JIS K22 -"4)#5n !(" )7%#"#&(" 3,), n",(" - /#n.

c) Descripción de la probeta.

 TABLA II. D#*n"#(n" - !, 3)(5&, - ,4)( Pr"be-a &e acer" /0/ D#+*&)( 1. ** L,)$( 200 **

Fig. 4 Dimensiones de proe&a para ensayo de fexión en (mm'

d) N"rmas u-)l)1a&as para el Ensa2" &e

'le()*n.

% En",( - /#n 3,), !, -%4&#!#-,- - *&,!" HASTM E20 ISO  JIS K22

Pr"p)e&a&es &)7me-r" l"n+)-u& #"men-" &e )nerc)a secc)*n -ransversal Es6uer1" m7()m" a 9e()*n Es6uer1" a 9uenc)a #*&ul" &e elas-)c)&a&

$cer" /0/   1.**  200** 11.0 **

120.MP, 12. MP, 201 MP,

V.

RESU4T$DOS RESU4T$DOS

5

$N$4ISIS

DE

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UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS FACULTAD DE INGENIERÍA PROYECTO CURRICULAR DE INGENIERÍA INDUSTRIAL LABORATORIO MECÁNICA APLICADA MSC.ING. LEONARDO EMIRO CONTRERAS BRAVO 10 DE NOVIEMBRE 2016  I =

π  ( 15.87 )

4

64

2

= 3113.70 mm

E! "'%)( *+#*( , /#n@ σ =

(

)( 200 mm) =1720.73  MPa π ( 15.87 mm )

8 13504.4  N 

3

=

σ 

8 ( 5860,494  N ) ( 200 mm )

( 15.6 m )3

π 

 #)E*+ ,"-"

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UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS FACULTAD DE INGENIERÍA PROYECTO CURRICULAR DE INGENIERÍA INDUSTRIAL LABORATORIO MECÁNICA APLICADA MSC.ING. LEONARDO EMIRO CONTRERAS BRAVO 10 DE NOVIEMBRE 2016

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RE'ERENCI$S BIB4IOGR;'IC$S

Q1 SEROPE ALPAJIAN STEVEN R. SCMID M,n%',4&%), #n$n#)<,  &4n(!($<,. IV E-#&#(n. M#4( 2002. P)n ,!!. F()*,& 202.P+$#n," 116. D#"3(n#5! n@ =&&3"@;;5((".$(($!.4(*.4(;5((" #-$#!YIWA(CX3)#n&"4')(n&4(9)9 Q2 RESISTENCIA DE MATERIALES. V#"&( ! -<, 0 - n(9#*5) - 201 -#"3(n#5! n@ =&&3@;;(4Z.%n#4,n.";n"n,n," &4n#4,";)"#"&n4#,-*,&)#,!" Q FLE[I\N Y TENSIONES. V#"&( ! -<, 0 - n(9#*5) - 201 -#"3(n#5! n@ =&&3@;;(4Z.%",!.";n"n,n," &4n#4,";)"#"&n4#,-*,&)#,!"#n$n#)( &4n#4(n(5),"3%5!#4,";