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Unformatted text preview: ME 2” Salim 5 *816. Two designs for a shock support are shown in the ﬁgure. The Spring has a stiffness of k = 15 kN/m and
in (a) it is uncompressed, whereas in (b) it is originally
stretched 0.2 m. Determine the average normal stress in
the 5mmdiameter bolt shank at A when the 6kN load
is applied. In (b) the bracket B is not connected to the support. 0’56 ‘1’)" 1% 61w .3 a
“’"l/ $1"ch F’kx; 6k/V=Url¢/t/h) x K: MW 2 0.2:“. WW é"! '3 614‘th mﬂnréd [J 0’: i :. A £10m“: :3og/‘1Pa. ﬁ m]?”f,ﬂte *880. The builtup shaft consists of a pipe AB and solid
rod BC. The pipe has an inner diameter of 20 mm and
outer diameter of 28 mm. The rod has a diameter of 12
mm. Determine the normal stress at points D and E and
represent the stress on a volume element located at each of these points. Prob. 880 ’ ABc :‘ $0“ 7L ,
7W” 3911.16 X!o"ln ‘ A“ : Edi—0H) = .3425, zo‘)x(a"t«
7? 4 FE 5 FD : Geri _ S’Xlol/l/ _
Au ’m‘tz 4W4 (Wm
 F9 4100’
G : —— : /V __
D AA“ 30/. “((6141 ’ 5‘10”? ( feud/e) 1: 30L gx/o'g‘ ‘. 885. The lever is attached to the shaft A using a key
that has a width of 8 mm and length of 25 m. If the shaft
is fixed and a vertical force of 50 N is applied perpendicular to the handle, determine the average shear I.
stress developed along section a—a of the key. ‘L ” 5w.
+3244, :
—~450mm———i
SON FxI; —§o x4“ :: 0
F: Koo/V :rw/V a 72".: #1:: L'é‘we/ é] Jim dim. 0t ?” T =
0 N $060.01;
’1 50“ Pa.
827. The bars of the truss each have a cr
area of 1.25 in2. If the maximum average no
any bar is not to exceed 20 ksi, determine th , .
magnitude P of the loads that can be applied I’“* A ' 5' 3 as
4
r . 3 "
+T2Fyzo ’P*(f)FA5=o he
, P
FM; ’ I.“ 7P
.1, y
2F.» * ﬁne + H51 Pt?) 2 o
Fae = (355 p
*TEFYZO‘ F95 ' "75? ;0
F53 : 0.7517 Fm
E
+ ’ twp F69
“>23 .0: map—559; W Jbl’la'f .5 " Fan‘Z‘ilUP 3 Fe
+ (177/? “534 F c
#5520:  i _ 4 _ f so
5% 2W7 P, 1.147;»?— _ m,
Fee =5“?
TL" 1‘71‘651‘ W364 heater is 30
O, , M1?
8‘ ’ (1: z 1"
P; *852. Th od cime ' b'e ed the ull f10
kN in a terfsiY): tesstrifg rIiaIr:h1isn:.l.1 Ii :hte altlgwablle noimal m stress for the wood is (0,)anow = 12 MPa and the
allowable shear stress is Tallow = 1.2 MPa, determine the Aﬂowaéé 5/«ear 9kg“: {Age [in If I
required dimensions b and t so that the specimen reaches V_ y I ' a 77'7".
these stresses simultaneously. The specimen has a width 'W/V' of 25 mm. 1 Km!” r. 1 TlOkN A (.2 (/05) : toofwz)
(aunt
t: mam/(m
MIN
Allowaéé IVWMI 560'!" 72km?“ [ILvI'I‘afIlh.
6%.. = if" (2.9(wé) : (0003)
(0.0195 ...
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This note was uploaded on 11/22/2011 for the course ME ME211 taught by Professor Barber during the Fall '10 term at University of Michigan.
 Fall '10
 Barber

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