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e.i. harmoniuli rxevis dros sruli energia mudmivia, rac imis Sedegia,<br />
rom garda wonasworobisadmi damabrunebeli drekadi (kvazidrekadi)<br />
Zalisa, sxva Zala ar moqmedebs.<br />
4.4. harmoniuli rxevebis Sekreba<br />
erTnairi sixSiris da mimarTulebis rxevebis veqtoruli Sekreba<br />
ori harmoniuli rxevis x 1 da x 2 Sekrebisas, romlebic ganisazRvrebian<br />
gantolebebiT:<br />
x = A cos( ω t + ϕ ) da x = A ω t + ϕ )<br />
1<br />
, 0 1<br />
miviRebT igive sixSiris harmoniul rxevas:<br />
x = x + x = A ω t + ϕ)<br />
jamuri rxevis amplituda iqneba (nax. 33)<br />
A<br />
2<br />
2<br />
1<br />
1<br />
2<br />
2<br />
2<br />
2 cos( 0 2<br />
x = Acosωt,<br />
y<br />
= Bcos(<br />
ω t + ϕ)<br />
61<br />
2<br />
cos( 0<br />
= A + A + A cos( ϕ −ϕ<br />
)<br />
xolo faza ϕ gamoisaxeba gantolebiT:<br />
a) Tu − ϕ = 0<br />
ϕ 2 1 , maSin 1 2 A A A +<br />
1<br />
2A1 2 1 2<br />
A1<br />
sinϕ1<br />
+ A2<br />
sinϕ<br />
2<br />
tgϕ<br />
=<br />
A cosϕ<br />
+ A cosϕ<br />
1<br />
nax. 33<br />
2<br />
= amplituda udidesia<br />
b) Tu ϕ 2 − ϕ1<br />
= ± π , maSin A = A1<br />
− A2<br />
, rxevebi sawinaaRmdego fazebSia<br />
da amplituda minimaluria.<br />
urTierTmarTobi harmoniuli rxevebis Sekreba.<br />
Tu materialuri wertili erTdroulad irxeva OX da OY koordinatTa<br />
RerZebis gaswvriv kanoniT:<br />
2