Upload
andreea-pavel
View
240
Download
0
Embed Size (px)
Citation preview
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
1/27
C 4C 4
ECHIIB CI EGA
AI
EEEE DE ECAICA CI
C. d. . G
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
2/27
FE EEIAE. FE ACIE I FE DE
EGAA(1)
.
,
.
F (,
, ) .
F
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
3/27
FE EEIAE. FE ACIE I FE DE
EGAA(2)
AA
( ) ( )
.
.
I ,
.
F
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
4/27
AEC CAIAI A FE DE EGAA.
CEDEA DIE I EGAII IAICAIAIE FE DE EGAA.
, (
) ( ) .
( )
( ).
C .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
5/27
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (1)
F
( ,
). I ,
.
C
, .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
6/27
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (2)
D
, ,
.
).
,
.
.
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
7/27
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (2)
(
) .
F ( )
;
.
I
(
)
(
) .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
8/27
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (3)
A:
E 2 : = 0; = 0; 2
2 ; 2
.
C 3
; 3 3 .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
9/27
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (4)
= =
= = .
( )
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
10/27
C
:
3 :
, , (, ).
AEC CAIAI A FE DE EGAA.
DEEIAEA FE DE EGAA (5)
. .
C
1 2 1 2.
C 3, H1 H2.
E 2
, 3 3 H3.
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
11/27
DEEIAEA FE DE EGAA (6)
:
;
(),
;
;
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
12/27
AICAIA 1 ECHIIB CI AEIA EGA
(1)
C.
AC BC.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
13/27
AICAIA 1 ECHIIB CI AEIA EGA
(2)
:
( ,
).
.
CA CB .
D
,
. I ():
== CAA+ CBB= 0
== CA A+ CBB G = 0
)B
Asin(
Bcos
+ )B
Asin(
Acos
+
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
14/27
AICAIA 1 ECHIIB CI AEIA EGA
(3)
F CA CB
AC BC ; , , G .
C
, .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
15/27
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
16/27
AICAIA 2 ECHIIB CI AEIA EGA
(2)
E : + F22 F1 1= 0
F11+ F22= 0
:
2= 2= , 1= 3/5, 1= 4/5 :
F1= F2 =
.
2/2
;p7
5p
7
24
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
17/27
AICAIA 2 ECHIIB CI AEIA EGA
(3)
F ,
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
18/27
AICAIA 3 ECHIIB CI AEIA EGA
(1)
.
:
D ( ) F1= F2= F;
.
D , ,
, .
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
19/27
AICAIA 3 ECHIIB CI AEIA EGA
(2)
.
2 30 12
4 .3
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
20/27
CI EEEAE I EEAE (1)
:
A
.
HB B , .
F ,
.
D : + HB= 0 , : H
B= ;
D B: A(+) = = 0; :
A=
A: B (+) = 0; :
B= .
E .
ba
b
++++
ba
a
++++
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
21/27
CI EEEAE I CA (1)
:
I A . E ( H)
().
5 0, 5
5 0, 5
+ 5 5 0, 25333
3
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
22/27
CI EEEAE I AICAE (1)
:
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
23/27
CI EEEAE I AICAE (2)
.
C,
, HC C.
,
( ) ( ).
C A B
A B:
10A 24 6 = 0, A= 14,4
10B 24 4 = 0, B= 9,6
C
C, HA HB.
8A 4HA 24 4 = 0, HA= 4,8
2B 4HA= 0, HB= 4,8
E ,
C:
HA HC= 0 HB HC= 0, HC=4,8; A+ C 24 = 0 B C= 0, C=9,6
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
24/27
CI CE (1)
G :
G :
AC ( ), ( A B)
CD ( ) ( D)
( C).
F
.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
25/27
CI CE (2)
D :
C= D= 6;
D :A= 2, B= 8.
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
26/27
CI CE (3)
G :
8/12/2019 Curs Mecanica Structurilor_4_2013 [Compatibility Mode]
27/27
CI CE (4)
E :
3= = 9
E :121 425 + 92 = 0,
122+ 427 914 = 0
1= 16, 2= 35
:
2(1+ 2) = 334