MSET ENGINEERING CORPORATION SDN BHD DOC OCU UMENT MENT TITL ITLE: DESI DESIGN GN CALC ALCULA ULATION TION
DATE : 22/ 22/02 02/2 /201 010 0
DOC. REF. NO.: MSETe/M2-152
ISSUE : 1
SUBJECT: DAVIT CALC.
REVISION: 2
ISO 9001:2000 REF: .0
PAGE : 115 !" 11#
1.0 MOMENT AND FORCES IN DAVIT AND VESSEL
(Ref:Pressure Vessel Vessel Design Manual 3rd Editon by Dennis R. Moss Page 291~295 291~295 1.1 !oad on da"i# Weight of Blind, $ !
:
1542.08 Kg
=
1 5 1 2 7 .8 0 4 8 N
Weight of !"it #Boom $ B%!&e', $ 1
:
44.6 Kg
=
4 3 7 .7 9 N
()i!l *o!d, + = W * $ W1
=
1 5 8 6 .7 k g
=
1 5 5 6 5 .5 9 N
e%-&!l m/!&t !&to%, "
:
1.5
o%iont!l m/!&t !&to%, h
:
0.5
e%-&!l o%&e, f " = " ) +
=
2 3 3 4 8 .3 9 0 9 5 N
o%iont!l o%&e, f h = h ) +
=
7 7 8 2 .7 9 6 9 8 4 N
1.2 %ending Mo&en# in Da"i# Mas#' M1
*ength of Boom, *1
=
997 mm
*ength of !t, * 2
=
889 mm
*ength *5
=
462 mm
oment, 1 = f "*1 $ 0.5W1*1 $ f h*2
=
Figure 1: Davit
30415490.2 Nm N mm
2.0 STRESS IN DAVIT
2.1 Mas# Proertes
:
( 106B 160
!t !te%i!l Aield t%e, ;
=
241.317 Nmm2
(llo!?le ()i!l t%e, ! = 0.6;
=
144.8 Nmm2
(llo!?le Bending t%e, ? = 0.66;
=
159.3 Nmm2
tide i!mete%, o
=
168.3 mm
tide !di, ! W!ll Chi&kne of !"it, t /
=
84.15 mm
=
18.26 mm
nide i!mete%, i
=
131.78 mm
%o e&-on!l (%e!, ( 1 = D4 )#o2Ei2'
=
8607.1 mm2
e&-on odl, F 1 = #D32o') #o4Ei4'
=
292087.5 mm3
oment ne%-!, = D64 )# o4Ei4'
=
24579160.0 mm4
!di of ;%!-on, % = <%t#('
=
53.4 mm
()i!l t%e !t !t, f ! = +(
=
1.81 Nmm2
Bending t%e !t !t, f ? = 1F1
=
104.1 Nmm2
om?ined t%e, f !! $ f ??
> =
!l&l!te om?ined t%e in&e !l&l!te om?ined t%e
@1
1 0.666
, t%e on !t i
Satsfacory
2.2 %oo& Proertes
Boom !te%i!l
:
Boom ie Aield t%e, ;
: =
(llo!?le ()i!l t%e, ! = 0.6;
=
148.9 Nmm2
(llo!?le Bending t%e, ? = 0.66;
=
163.8 Nmm2
%o e&-on!l (%e!, ( 2
=
4735 mm2
e&-on odl, F 2
=
91899 mm3
()i!l t%e !t Boom, f ! = +(
=
3.29 Nmm2
Bending t%e !t Boom, f ? = #f " )*5'F2
=
117.4 Nmm2
om?ined t%e, f !! $ f ??
> =
!l&l!te om?ined t%e in&e !l&l!te om?ined t%e
@1
( 36 Be!m 152 ) 152 ) 37.2 kgm 248.22 Nmm2
1 0.739
, t%e on Boom i
Satsfacory
3.0 WELDED DESIGN JOINT
(Ref:Pressure Vessel )andboo* 12#+ Editon by Eugene ,. Megyesy Page -59 3.1 Da"i# r& %ra/*e#
e%-&!l he!%,
=
15128 N
Bending oment, = l
=
20180492 Nmm
o%iont!l Weld *ength,?
=
224 mm
e%-&!l Weld *ength,d *ength of Weld, (
=
257 mm
=
962 mm
illet Weld Ged
=
12 mm
e&-on odl #Bending oment',
: =
?d $#d2 3' 79584.3 mm2
=
9600 /i
=
66.19 Nmm2
e%-&!l he!% o%&e,W =(
=
15.73 Nmm
Bending o%&e, W? =
=
253.57 Nmm
elt!nt o%&e, W =#W?2 $ W2'12
=
254.06 Nmm
illet Weld *eg ie, =Wf
=
3.84 mm
(llo!?le lo!d on eld,f
in&e !l&. eld ie
H Weld ed
= Satsfacory
4.0 DESIGN OF LOCAL STRESS IN CYLINDRICAL SHELL
(Ref:Pressure Vessel Design Manual 3rd Editon by Dennis R. Moss Page 255~290 -.1 Radial !oad for +ell aa/+&en#
!lf ide "e%-&!l !I!&hment, ) =d2
=
128.5 mm
!lf ide ho%iont!l !I!&hment, =?2
=
112.0 mm
e!n !di, m
=
620.6 mm
hell thi&kne,t
=
22.2 mm
)m
=
0.21
m
=
0.18
*o!d on !I!&hment,
=
15128 N
K) f%om Jg 5.13 Kf%om Jg 5.13
MSET ENGINEERING CORPORATION SDN BHD DOCUMENT TITLE: DESIGN CALCULATION
DATE : $1/0$/2009
DOC. REF. NO.: MSETe/M2-1$
ISSUE :
SUBJECT: PROPERTIES OF SECTION
REVISION:
ISO 9001:2000 REF: .0
PAGE :
!"
PROPERTIES OF SECTION
(Ref:Pressure Vessel )andboo* 10#+ Editon by Paul %u#+od Page -50 4 -51
Chi t!?le /%o"ide fo%ml! fo% &!l&l!-ng e&-on (%e!, oment of ne%-!, +ol!% moment of ine%-!, e&-on odl, !di of g;%!-on !nd ent%oid!l dit!n&e fo% "!%io &%o e&-on h!/e. o&en/la#ure :
(%e! mm2
(
=
=
oment of ine%-!
L
=
+ol!% moment of ine%-!
F
=
e&-on modl
%
=
!di of g;%!-on mm
;
=
ent%iod!l dit!n&e mm
mm4 mm3
mm4 =
;
=
<%t #('
!' e&t!ngl!% %el!-onhi/: (=?)h = #? ) h3'12 F = #? ) h2'6 % = 0.289 ) h ; = h2
?' C%i!ngl!% %el!-onhi/: ( = ? ) h2 = #? ) h3'36 F = #? ) h2'24 % = 0.236 ) h ; = h3
&' i%&le %el!-onhi/: ( = D 4 ) d2 = D64 ) d4 F = D32 ) d3 L = #D ) d4' 32 % = d4 ; = d2
d' ollo &i%&le %el!-onhi/: ( = D4 )# d2 E di2' = D64 )# d4 E di4' F = D #32 ) d' ) #d4 E di4' L = #D ) d4' 32 ) #d4 E di4' % = <%t ##d 2 E di2' 16' %ongEto ?e &he&k ; = d2
e' !lfE i%&le %el!-onhi/:
( = D ) d2 8 = 0.007 d4 F = 0.024 d3 % = 0.132 d ; = 0.288 d
f' !lfEollo i%&le %el!-onhi/:
( = 1.5708 #o2E%i2' = 0.1098#o4E%i4' E
M0.283o2%i2 #oE%i'#o$%i'
F = ;
% = <%t #(' ; = 0.424#o3E%i3'#o2E%i2'
g' Olli/e %el!-onhi/:
( = D ) !? = 0.7854 !3? F = 0.7854 !2? % = !2 ;=!
h' CEh!/e %el!-onhi/:
( = ? $ ht = 13PMt;3 $ ?#dE;' 3 EM#?Et'#dE;E' 3Q F = ; % = <%t #(' ; = d E PMd 2t $ 2#?Et'2#? $ht'Q
i' *Eh!/e#e<!l !ngle' %el!-onhi/:
( = t#2! E t' = 13PMt;3 $ !#!E;'3EM#!Et'#!E;Et'3Q F = ; % = <%t #(' ; = ! E PM! 2 $ !tEt22#2!Et'Q
R' *Eh!/e#n<!l !ngle' %el!-onhi/:
( = t#! $ ? E t' = 13PMt;3 $ !#?E;'3EM#!Et'#?E;Et'3Q F = ; % = <%t #(' ; = ! E PMt#2d $ !' $ d 32#d$!'Q
k' Eh!/e %el!-onhi/: ( = ?dEh#?Et' = M?d 3 Eh3#?Et'12 F= M?d3 Eh3#?Et'6d % = <%t #(' ; = d2
