Ngày tải lên :
25/04/2013, 08:54
...
(3- 3).
+ Taỷi mỷt cừt lừp baùnh rng: choỹn d = 58mm
33
73, 38290 ;36 5,19145
63, 539 498;58 ,30 834 8
mmWmmW
NmmMNmmM
o
xu
==
==
a
=
1,16
36 5,19145
58 ,30 834 8
==
W
M
u
a
=
2
/1,14
73, 38290
63, 539 498
mmN
W
M
o
x
==
=> ... Mu(xz)=R
Cx
.b
1
=-1 433 ,24.69=-988 93, 56Nmm
Taỷi mỷt cừt 2-2
Mu(yz)=R
Dy
.b
3
=744,5. 53, 5 =39 830 ,75Nmm
Mu(xz)=R
Dx
.b
3
=-149,52. 53, 5=-7999 ,32 Nmm
Ta co ù M
u
(1-1)=
22
uxuy
MM
+
=
Nmm16,107625576,988 932 7 ,33 315
22
=+
Sinh ... Nhióỷt
M
Dy
=-R
cy
(b
1
+b
2
+b
3
)+Pr
3
(b
2
+b
3
)+Pr
2
.b
3
-Pa
2
.
=
2
2
dtb
0
R
cy
=
N
bbb
dtb
Pabbb
83, 482
5, 535 ,6269
2
6,190
4415 ,36 53, 176)5, 535 ,62(1051
2
Pr)(Pr
32 1
2
232 3 23
=
++
++
=
++
++
Y=R
Cy
-Pr
3
-Pr
2
+R
Dy
=0 ;R
Dy
=1051+176 ,36 -482, 83= 744,5N
M
Dx
==-R
cx
(b
1
+b
2
+b
3
)+P
3
(b
2
+b
3
)+P
2
.b
3
=0
R
cx
=
N
bbb
bPbbP
24,1 433
5, 535 ,6269
5, 53. 78, 130 4)5, 535 ,62(54,2887
)(
32 1
32 3 23
=
++
++
=
++
++
(chióửu...