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{SECT 0 {EXCHG {PARA 0 "" 0 "" {TEXT -1 57 "Calcul des fr\351quences d
e r\351sonance des structures en pont" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 21 "restart:\nwith(plots):" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 72 "freq:=(1/(2*Pi))*sqrt((63*h1^2*E1)/(rho1*(L/n)^4))*sq
rt(A0/(B1*h*r+B0));" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#>%%freqG,$*&*(-
%%sqrtG6#\"\"(\"\"\"-F)6#*&*()%#h1G\"\"#F,%#E1G\"\"\")%\"nG\"\"%F,F,*&
%%rho1G\"\"\")%\"LG\"\"%F,!\"\"F,-F)6#*&%#A0GF,,&*(%#B1GF5%\"hGF5%\"rG
F5F5%#B0GF5F?F,F,%#PiGF?#\"\"$F3" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 229 "A0 := 64/3*(4*s*n^6-24*s*n^5+15*s^2*n^5+9*n^5+15*s^3
*n^4+105*s*n^4-45*n^4-75*s^2*n^4+210*s^2*n^3+90*n^3-60*s^3*n^3-240*s*n
^3+90*s^3*n^2+270*s*n^2-270*s^2*n^2-90*n^2-60*s^3*n+45*n-144*s*n+159*s
^2*n+33*s-9+15*s^3-39*s^2)*(s*n-s+1):" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 796 "B0 := 10448*s^3+879648*s^3*n^4-647808*s^3*n^3+304100
*s^3*n^2-83464*s^3*n-9384*s^2+825552*s^2*n^5-885360*s^2*n^4+628992*s^2
*n^3-286496*s^2*n^2+76424*s^2*n+91728*n^5+6552*n+4164*s+728*n^9-5760*s
^4-205632*s^4*n^6+372960*s^4*n^5-439488*s^4*n^4+26208*n^7-6552*n^8+457
92*s^4*n-26208*n^2+281400*s*n^6-434448*s*n^5+448728*s*n^4-308448*s*n^3
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4184*s^3*n^6-785232*s^3*n^5+1260*s^5+1260*s^5*n^8-10080*s^5*n^7+35280*
s^5*n^6-70560*s^5*n^5+88200*s^5*n^4-70560*s^5*n^3+35280*s^5*n^2-10080*
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0 "" {MPLTEXT 1 0 9 "B1 :=B0: " }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 
1 0 45 "E1_si:=150e9;nu1:=0.273; E1:=E1_si/(1-nu1^2);" }}{PARA 11 "" 
1 "" {XPPMATH 20 "6#>%&E1_siG$\"$]\"\"\"*" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "6#>%$nu1G$\"$t#!\"$" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#>%
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{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 9 "s:=b2/b1:" }}}{EXCHG {PARA 0 
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" {MPLTEXT 1 0 12 "rhoc0:=6493:" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 
1 0 11 "rho1:=2300:" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 26 "hc0:
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{PARA 0 "" 0 "" {TEXT -1 7 "I.P.B.5" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 40 "b1:=200e-6:L1:=500e-6:b2:=1e-3:L2:=1e-3:" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 12 "evalf(freq);" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "6#$\"+$G?=[(!\"'" }}}}{SECT 1 {PARA 3 "" 0 "" {TEXT -1 5 
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11 "" 1 "" {XPPMATH 20 "6#$\"+1NfTH!\"'" }}}}{SECT 1 {PARA 3 "" 0 "" 
{TEXT -1 6 "IIPB.5" }}{EXCHG {PARA 0 "" 0 "" {TEXT -1 8 "II.P.B.5" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 40 "b1:=400e-6:L1:=500e-6:b2:=1e
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;" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#$\"+,I<a()!\"'" }}}}{SECT 1 
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