HW1_2006_2_sol - Homework 1 Due date 1014106 Acoustics...

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Homework 1 Acoustics I Winter 2006 Due date: 1014106 ; o c /,,,ti09 ( A l s o , 5-a /& s m l ) ~ NP 7~ A 5 A SDOF system is operating on a foundation defined by impedance Z, as shown below. Sc i . 8 ) Plot the displacement amplitude x, at the excitation point as a function of frequency if F 1 0 , O O O j , ,j[loooo- 0 . 6 x 1 0 6 ) ; o r ( 1 ~ ~ ~ ~ o - 3 0 x 1 0 ~ = 1 and Z, = j 1 0 0 0 ~ - - for the W (0 W frequency range w =0-2000 rad i s un les4 TL u r s , 3 nmle.r?f ,J " d ' yo, don$ need & r ; ~ ~ ~ L m t L I ) ~ ~ I T ~ ~ A , - , d ~ d v ~ v ~ , l a b L ,
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, I -0.5 - - -1 - - - - - - I I 1 02 1 o3 1 o4 I frequency (radls)
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0 1 I -0.5
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