Wydział Inżynierii Lądowej, Środowiska i Geodezji
Politechnika Koszalińska
ĆWICZENIE NR 3.
Sprawdzenie dokładności rozwiązania MRS.
Wykonał(-a):
Imię Nazwisko,
gr. 2.x.y
Koszalin, 2015
N
6
:=
I
7
:=
ES
1
:=
L
N
6
=
:=
1. Rozwiązanie dokładne:
OBCIĄŻENIE:
f x
( )
N x
2
⋅
I
+
:=
Równanie różniczkowe:
ES
d
2
u
dx
2
⋅
f x
( )
−
=
Nx
2
−
I
−
=
- równanie sił normalnych:
ES
du
dx
⋅
1
3
−
Nx
3
Ix
−
C
1
+
=
- równanie wydłużenia:
ES u
⋅
1
12
−
N x
4
⋅
1
2
I x
2
⋅
−
C
1
x
⋅
+
D
1
+
=
OBLICZENIE stałych całkowania:
D
1
0
:=
C
1
1
3
N
⋅
L
3
⋅
I L
⋅
+
474
=
:=
C
1
474
=
D
1
0
=
h
L
3
2
=
:=
PODZIAŁ na 3 PUNKTY:
x
3
3 h
⋅
6
=
:=
x
2
2 h
⋅
4
=
:=
x
1
h
2
=
:=
w
3
N
−
x
3
( )
2
⋅
I
−
223
−
=
:=
w
2
N
−
x
2
( )
2
⋅
I
−
103
−
=
:=
w
1
N
−
x
1
( )
2
⋅
I
−
31
−
=
:=
MRS1
0
0
1
2
−
1
−
1
2
−
1
0
2
−
1
0
1
1
0
0
1
−
0
w
3
h
2
⋅
w
2
h
2
⋅
w
1
h
2
⋅
⋅
982
1840
2286
1840
=
:=
Rozwiązanie dokładne:
u
1
12
−
N x
4
⋅
1
2
I x
2
⋅
−
C
1
x
⋅
+
D
1
+
=
u
1
1
12
−
N x
1
4
⋅
1
2
I x
1
2
⋅
−
C
1
x
1
⋅
+
D
1
+
926
=
:=
u
2
1
12
−
N x
2
4
⋅
1
2
I x
2
2
⋅
−
C
1
x
2
⋅
+
D
1
+
1712
=
:=
u
3
1
12
−
N x
3
4
⋅
1
2
I x
3
2
⋅
−
C
1
x
3
⋅
+
D
1
+
2070
=
:=
D1
u
1
u
2
u
3
926
1712
2070
=
:=
h
L
10
0.6
=
:=
PODZIAŁ na 10 PUNKTY:
x
10
10 h
⋅
6
=
:=
x
09
9 h
⋅
5.4
=
:=
x
08
8 h
⋅
4.8
=
:=
x
07
7 h
⋅
4.2
=
:=
x
06
6 h
⋅
3.6
=
:=
x
05
5 h
⋅
3
=
:=
x
04
4 h
⋅
2.4
=
:=
x
03
3 h
⋅
1.8
=
:=
x
02
2 h
⋅
1.2
=
:=
x
01
h
0.6
=
:=
w
10
N
−
x
10
(
)
2
⋅
I
−
223
−
=
:=
w
05
N
−
x
05
(
)
2
⋅
I
−
61
−
=
:=
w
09
N
−
x
09
(
)
2
⋅
I
−
181.96
−
=
:=
w
04
N
−
x
04
(
)
2
⋅
I
−
41.56
−
=
:=
w
08
N
−
x
08
(
)
2
⋅
I
−
145.24
−
=
:=
w
03
N
−
x
03
(
)
2
⋅
I
−
26.44
−
=
:=
w
07
N
−
x
07
(
)
2
⋅
I
−
112.84
−
=
:=
w
02
N
−
x
02
(
)
2
⋅
I
−
15.64
−
=
:=
w
06
N
−
x
06
(
)
2
⋅
I
−
84.76
−
=
:=
w
01
N
−
x
01
(
)
2
⋅
I
−
9.16
−
=
:=
MRS2
0
0
0
0
0
0
0
0
0
1
2
−
0
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
0
1
2
−
1
0
0
0
0
0
0
1
−
1
2
−
1
0
0
0
0
0
0
0
0
2
−
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
−
0
w
10
h
2
⋅
w
09
h
2
⋅
w
08
h
2
⋅
w
07
h
2
⋅
w
06
h
2
⋅
w
05
h
2
⋅
w
04
h
2
⋅
w
03
h
2
⋅
w
02
h
2
⋅
w
01
h
2
⋅
⋅
0
0
1
2
3
4
5
6
7
8
9
10
284.436
565.5744
841.0824
1107.072
1358.1
1587.168
1785.7224
1943.6544
2049.3
2089.44
2049.3
=
:=
Rozwiązanie dokładne:
u
1
12
−
N x
4
⋅
1
2
I x
2
⋅
−
C
1
x
⋅
+
D
1
+
=
u
01
1
12
−
N x
01
4
⋅
1
2
I x
01
2
⋅
−
C
1
x
01
⋅
+
D
1
+
283.0752
=
:=
u
02
1
12
−
N x
02
4
⋅
1
2
I x
02
2
⋅
−
C
1
x
02
⋅
+
D
1
+
562.7232
=
:=
u
03
1
12
−
N x
03
4
⋅
1
2
I x
03
2
⋅
−
C
1
x
03
⋅
+
D
1
+
836.6112
=
:=
u
04
1
12
−
N x
04
4
⋅
1
2
I x
04
2
⋅
−
C
1
x
04
⋅
+
D
1
+
1100.8512
=
:=
u
05
1
12
−
N x
05
4
⋅
1
2
I x
05
2
⋅
−
C
1
x
05
⋅
+
D
1
+
1350
=
:=
u
06
1
12
−
N x
06
4
⋅
1
2
I x
06
2
⋅
−
C
1
x
06
⋅
+
D
1
+
1577.0592
=
:=
u
07
1
12
−
N x
07
4
⋅
1
2
I x
07
2
⋅
−
C
1
x
07
⋅
+
D
1
+
1773.4752
=
:=
u
08
1
12
−
N x
08
4
⋅
1
2
I x
08
2
⋅
−
C
1
x
08
⋅
+
D
1
+
1929.1392
=
:=
u
09
1
12
−
N x
09
4
⋅
1
2
I x
09
2
⋅
−
C
1
x
09
⋅
+
D
1
+
2032.3872
=
:=
u
10
1
12
−
N x
10
4
⋅
1
2
I x
10
2
⋅
−
C
1
x
10
⋅
+
D
1
+
2070
=
:=
D2
u
01
u
02
u
03
u
04
u
05
u
06
u
07
u
08
u
09
u
10
0
0
1
2
3
4
5
6
7
8
9
283.0752
562.7232
836.6112
1100.8512
1350
1577.0592
1773.4752
1929.1392
2032.3872
2070
=
:=
WYNIKI:
C
1
474
=
D1
926
1712
2070
=
MRS1
982
1840
2286
1840
=
D2
0
0
1
2
3
4
5
6
7
8
9
283.0752
562.7232
836.6112
1100.8512
1350
1577.0592
1773.4752
1929.1392
2032.3872
2070
=
MRS2
0
0
1
2
3
4
5
6
7
8
9
10
284.436
565.5744
841.0824
1107.072
1358.1
1587.168
1785.7224
1943.6544
2049.3
2089.44
2049.3
=