general excel tips 3

7/23/2019 General Excel Tips 3

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EXCEL IN ME - PART 3

Keith A. WoodburyMechanical Enineerin!ni"er#ity o$ Alaba%a



EXCEL MATRICE&

There i# a built in #ol"er in Micro#o$t E'cel that can(roduce al%o#t all the nece##ary %atri' calculation#that Matlab i# ca(able o$. tran#(o#e

%%ult %in"er#e

Na%in %atrice# are di)erent than na%incell#*colu%n# becau#e the na%in %u#t be done by

hihlihtin the entire %atri' and oin to the+or%ula# Tab. &elect ,ene Na%e/ and enter thena%e o$ the %atri'. Thi# can be #een on the ne't#lide.



EXCEL MATRICE& 0 EXAMPLE

Three indi"idual# are connected by bunee cord#.!#in Ne1ton2# #econd la1 1e et the $ollo1in$orce balance and $or each u%(er

4567589'6 0 58'8 : %6

-58'6 7 4587539'8 0 53'3 : %8-53'8 7 53'3 : %3

The table o$ (ro(ertie# $or each u%(er i# a# $ollo1#

;u%(er Ma##459 &(rin Con#tant 4N*%9

To( 469 <= >= Middle 489 ?= 6==

@otto% 439 = >=




No1 let# #et u( our #y#te% o$ eBuation# in E'cel by#ub#titutin our i"en "ariable# into the initialeBuation#




&ub#titutin our (ara%eter# 1e et the $ollo1in%atri' eBuation

6>= -6== = '6 >.<

-6== 6>= ->= '8 : <<.? = - >= >= '3 ?.




In order to #ol"e $or our lenth# 4'9 1e 1ill needto di"ide our #(rin con#tant by our $orce#D

' : 5*%

!n$ortunately there i# no %atri' di"i#ion in E'celthere$ore 1e %u#t %ulti(ly the in"er#e o$ 5 by %

': 5-6%



Make sure to holddown Ctrl+Shiftbefore pressing

enter in order forthe matrix solution

to work



Make sure tohold downCtrl+Shift

before pressingenter in order

for the matrixsolution to work



EXCEL ITERATIFN

Micro#o$t E'cel iteration can (er$or% a G$or-ne'tHloo( 1ith no (rora%%in at all.

In the ne't e'a%(le 1e/ll #et u( a #i%(le counterthat 1ill #ho1 ho1 E'cel/# iteration and circular

re$erence 1or5#



EXCEL ITERATIFN - EXAMPLE

Clic5 on the Microsoft Oce Button 4Circle @uttonin To( Le$t9 and #elect ,E'cel F(tion#/. Fnce that i#done o to ,+or%ula#/ on the le$t colu%n. Ma5e #ure,Manual/ i# #elected under ,Wor5boo5 Calculation/.

A$ter that chec5 the bo' that read# ,Enable iterati"ecalculation/ and #et your %a' nu%ber o$ iteration#to 6. Then #elect ,FK/. Thi# 1ill return you bac5 tothe #(read#heet. ou can then continue the iteration

by (re##in the ,+J/ button.



EXCEL ITERATIFN

Hit the F ke!to continue

the iteration



I&!AL @A&IC MACRF&

&o%eti%e# it i# ea#ier to (lace a $or%ula in#ide a"i#ual ba#ic %acro to #ol"e a (roble%

!#in the %acro %a5e# it ea#ier to identi$y the$or%ula in#tead o$ ha"in to co(y it nu%erou# ti%e#



I&!AL @A&IC MACRF& - EXAMPLE

The Redlich-K1on EBuation o$ #tate i# i"en byD

1here R i# the uni"er#al a# con#tant T i#ab#olute te%(erature ( i# ab#olute (re##ure " i#the "olu%e o$ a 5 o$ a# and a b arecon#tant# 1ith the (ara%eter#D

T bvv

a

bv

RT p

)( +−

−

=

c

c

p

T R

a

5.22

427.0=

c

c

p

T

Rb 0866.0=




The (ara%eter# $or the eBuation areD

(c : <== 5Pa Tc : 6J6K

R : =.>6 5;*45-K9

ou are a#5ed to deter%ine the a%ount o$ %ethane$uel that can be held in a 3%3 tan5 at a te%(eratureo$ -=C 1ith a (re##ure o$ <>=== 5Pa.




The r#t #te( in the (rocedure i# to #et u( a %acrou#in Micro#o$t i#ual @a#ic.

ou %ay need to add the e"elo(er Tab on the,ribbon/ in E'cel 8==?.

ou can do thi# by oin to the Microsoft OceButton 4Circle @utton in To( Le$t9 and #elect ,E'celF(tion#/. !nder ,Po(ular/ on le$t colu%n chec5,&ho1 e"elo(er tab in the Ribbon/ under ,To(

o(tion# $or 1or5in 1ith E'cel/. Then #elect ,FK/.



How to "nd

#isual Basic$Foundunder

%e&eloper

'ab(




Fnce you #elect ,i#ual @a#ic/ $ro% thee"elo(er Tab a ne1 1indo1 1ill ,(o(u(/. Then #elect ,In#ert/ ,Module/.



Select)*nsert and

then )Module




No1 that 1e ha"e our %odule let/# 1rite our $unctioninto "i#ual ba#ic

Fnce 1e ha"e our $unction #et u( in "i#ual ba#ic 1ecan #et u( our (ara%eter# to #ol"e $or ,(/. &ince 1e don/t 5no1 ,"/ at thi# (oint let# %a5e u( a "alue o$

=.>%3*5. Al#o don/t $oret to na%e your "ariable# in E'cel.



Make sure that

the module isin the modulesfolder and notthe workbook

folder



,o here to return toMicrosoft -xcel $.ote/

0our macro does not needto be sa&ed indi&iduall!12s long as the module isshown in &isual basic themacro will appl! to !our

spreadsheet(



Make sure !ou do.O' name this cell

)p as it willinterfere with thename of the macro




No1 that 1e ha"e our $unction #et u( 1e can u#eOFAL&EEK to nd our #(ecic "olu%e by #ettin our(re##ure eBual to <>=== 5Pa

Fnce 1e nd our #(ecic "olu%e at <>===5Pa 1e

can nd the a%ount o$ %ethane $uel 459 in#ide the3%3 tan5



I&!AL @A&IC MACRF&

NoteD !nli5e Matlab all i"en "ariable# in Micro#o$tE'cel %u#t be 1ritten in the actual #(read#heetin#tead o$ the $unction. oin other1i#e 1ill not i"eyou a re#ult $or a $unction

general excel tips 3

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