Figura płaska
Elipsa
A = abn
ex = a, ey = b
obwód U = p ('a+fcj
a - b a + b
0,30
3,1495 3,1731 3,2127
Polowa elipsy
A = — ab = 1,51\ab 2
r, = —a = 0,4244« ■* 3 n
Ćwiartka elipsy
V| W
A = —ab = 4
= 0,7854«fc
e, = —« = 0, 4244a
1 3 n
4
ev = —b = 0, 4244
* 3tc
Pole zewnętrzne ćwiartki elipsy
ab =
a =
i - -4
= 0,2146nfe
= 0, 7766« ev = 0, 7766 ib
J |
W | ||||
! = -foa3 = 0,7854fca3 4 / = -ab* = 0,7854afo3 4 |
W = -ba = 0,7854ia2 4 IV = -«fe2 = 0,7854afc2 4 | ||||
0,40 |
0,50 |
0,60 |
0,70 |
0,80 |
0,90 |
3,2686 |
3,3412 |
3,4314 |
3,5401 |
3,6691 |
3,8208 |
/, = 0,1098i>«3 / = -ab* = 0,3927 ab' ł 8 / =-ia3 = 0,3927 fca3 1 8 |
Wr = -ii—= 0,1907b«2 W, = -afc3 = 0,2921ab* 3 8 | ||||
= 0,05488*a3 /y = 0,05488afc3 /; = 0,1963ia3 /2 = 0,1963a&3 |
Wx - - 0,09534foa2 / 2 W.. - y - 0,09534ab 3 b-ey |
Ix = 0,00155ba ly = 0,00755ab*
Wx = -4- = 0,00972to
ex
I 2
W, = -Ł = 0,00972«»
585