Okay also der Rahmen wie er da zu sehen ist, hat Eigengewicht über den Gravity Befehl sowie Massenelemente an diskreten Stellen um Lautsprecher und Scheinwerfer zu modellieren.
Meine Frage ist jetzt immer noch welche Randbedingungen ich an der Symmetrieebene antragen muss um physikalische Konsistenz zu erzielen.
es gibt 3 Massepunkte die nur auf der einen Gurtunterseite angebracht sind und somit eine Torsion der Struktur bewirken
Ich häng einfach mal den Input File an, vielen Dank schonmal
*HEADING
Hausarbeit
**file inptt ->import model -> Assembly -> instance partz l(inks oben) -> Merge Cut instances -> Merge-> Mesh - AAll
*PREPRINT,MODEL=yes
*NODE
1, 0.00, 0.00, 0.00
2, 0.20, 0.00, 0.00
3, 0.20, 0.00, 0.20
4, 0.00, 0.00, 0.20
5, 0.20, 0.50, 0.00
6, 0.00, 0.50, 0.20
7, 0.00, 1.00, 0.00
8, 0.20, 1.00, 0.20
9, 0.20, 1.50, 0.00
10, 0.00, 1.50, 0.20
11, 0.00, 2.00, 0.00
12, 0.20, 2.00, 0.20
13, 0.20, 2.50, 0.00
14, 0.00, 2.50, 0.20
15, 0.00, 3.00, 0.00
16, 0.20, 3.00, 0.20
17, 0.20, 3.50, 0.00
18, 0.00, 3.50, 0.20
19, 0.00, 4.00, 0.00
20, 0.20, 4.00, 0.20
21, 0.20, 4.00, 0.00
22, 0.00, 4.00, 0.20
**
23, 0.20, 4.20, 0.00
24, 0.20, 4.20, 0.20
**
25, 0.00, 4.20, 0.00
26, 0.00, 4.20, 0.20
**
27, 0.00, 4.20, 0.70
28, 0.20, 4.00, 0.70
29, 0.00, 4.00, 1.20
30, 0.20, 4.20, 1.20
31, 0.20, 4.00, 1.70
32, 0.00, 4.20, 1.70
33, 0.00, 4.00, 2.20
34, 0.20, 4.20, 2.20
35, 0.20, 4.00, 2.70
36, 0.00, 4.20, 2.70
37, 0.00, 4.00, 3.20
38, 0.20, 4.20, 3.20
39, 0.20, 4.00, 3.70
40, 0.00, 4.20, 3.70
** zentraler Knoten
79, 0.00, 4.00, 3.70
**
80, 0.20, 4.20, 3.70
*ELEMENT, TYPE=B33
**PIPE31
1, 1, 2
2, 2, 3
3, 3, 4
4, 4, 1
5, 1, 7
6, 3, 8
7, 4, 6
8, 2, 5
9, 3, 6
10, 3, 5
11, 1, 6
12, 1, 5
13, 5, 8
14, 5, 7
15, 6, 7
16, 6, 8
17, 6, 10
18, 5, 9
19, 7, 11
20, 8, 12
21, 8, 10
22, 8, 9
23, 7, 9
24, 7, 10
**25, 10, 12
26, 9, 12
27, 10, 11
28, 10, 12
29, 10, 14
30, 9, 13
31, 9, 11
32, 11, 14
33, 11, 13
34, 12, 14
35, 12, 13
36, 12, 16
37, 11, 15
38, 13, 16
39, 13, 15
40, 14, 16
41, 14, 15
43, 14, 18
44, 13, 17
45, 15, 17
46, 15, 18
47, 16, 18
48, 16, 17
49, 16, 20
50, 15, 19
51, 18, 20
52, 18, 19
53, 17, 20
54, 17, 19
55, 18, 22
56, 17, 21
57, 20, 21
58, 20, 22
59, 19, 21
60, 19, 22
61, 21, 24
62, 22, 24
63, 21, 25
64, 22, 25
65, 22, 26
66, 20, 24
67, 21, 23
68, 19, 25
69, 23, 25
70, 25, 26
71, 24, 26
72, 23, 24
**
73, 20, 28
74, 26, 27
75, 22, 29
76, 24, 30
77, 22, 27
78, 27, 29
79, 24, 28
80, 28, 30
81, 28, 31
82, 30, 31
83, 24, 27
84, 22, 28
85, 28, 29
86, 27, 30
87, 29, 31
88, 27, 32
89, 30, 32
90, 29, 32
91, 29, 33
92, 32, 33
93, 31, 34
94, 30, 34
95, 31, 33
96, 32, 34
97, 34, 35
98, 33, 36
99, 31, 35
100, 32, 36
101, 34, 36
102, 33, 35
103, 36, 38
104, 35, 38
105, 33, 37
106, 36, 37
107, 34, 38
108, 35, 37
109, 35, 39
110, 36, 40
111, 37, 40
112, 38, 39
113, 38, 40
114, 37, 39
**Mitte
237, 37, 79
238, 38, 80
*ELEMENT, TYPE=MASS
300, 22
307, 39
301, 29
302, 33
304, 35
305, 31
308, 20
310, 37
309, 28
303, 37
400, 22
401, 33
402, 37
*ELSET, Elset=massescheinwerfer10
300
307
*ELSET, ELSET= massescheinwerfer20
301
302
304
305
*ELSET, ELSET= massescheinwerfer5
308
310
*ElSET, ELSET= massescheinwerfer15
309
303
*ElSET, ELSET= masselautsprecher200
400
401
*ElSET, ELSET= masselautsprecher100
402
*Elset, Elset=dick
1, 3, 5, 6, 7, 8, 17, 18, 19, 20, 29, 30, 36, 37, 43
44, 49, 50, 55, 56, 58, 59, 65, 66, 68, 69, 67, 68
71
*Elset, Elset=duenn
9, 10, 11, 12, 16, 15, 14, 13, 21, 24, 22, 23
28, 27, 26, 31, 32, 33, 34, 40, 41, 39, 108
47, 46, 45, 48, 52, 51, 54, 53, 63, 61, 64, 62
83, 79, 84, 77, 80, 86, 78, 85, 89, 87, 82
101, 95, 93, 92, 96, 92, 97, 102, 106, 103
106, 104, 111, 114, 112, 113, 98, 38, 35, 90
*Elset, Elset=normalenvektor
110, 109, 105, 107, 99, 100, 91, 94, 81
88, 73, 75, 76, 74, 70, 72, 60, 57, 2, 4, 237, 238
*Elset, Elset=untergurt
109, 105, 99, 91, 81, 75, 73, 237
*Nset, Nset=lager
1, 2, 3, 4
*Nset, Nset=mittelknoten
79
**Nset, Nset=symmetrie
*BEAM SECTION, ELSET=dick, SECTION=PIPE, MATERIAL=Aluminium
0.0127, 0.0012
*BEAM SECTION, ELSET=duenn, SECTION=PIPE, MATERIAL=Aluminium
0.009, 0.001
*BEAM SECTION, ELSET=normalenvektor, SECTION=PIPE, MATERIAL=Aluminium
0.0127, 0.0012
0,-1,0
*MATERIAL, NAME=aluminium
*ELASTIC, TYPE=ISOTROPIC
6.895E10, 0.33
**PLASTIC
**2.861E8, 0.0
**2.8611E8, 0.078
**3.3094E8, 0.078
*DENSITY
2700
*BOUNDARY, TYPE=DISPLACEMENT
**symetrie
39, 3,5
40, 3,5
79, 3,5
80, 3,5
**festeinspannung Fusspunkt
lager, Encastre
**
*MASS, ELSET=massescheinwerfer10
10
*MASS, ELSET=massescheinwerfer20
20
*MASS, ELSET=massescheinwerfer5
5
*MASS, ELSET=massescheinwerfer15
15
*MASS, ELSET=masselautsprecher100
100
*MASS, ELSET=masselautsprecher200
200
** 2.758x10^8 N/m^2
*Step
*Static
** *Dload
** untergurt,PY,-196.2
*Dload
,GRAV,9.81,0,-1,0
** *CLOAD
** 33,2,-1962
** 22,2,-1962
** 37,2,-981
**---------------------------------------------------------------------------------------------------------------------------------------------
**OUTPUT
**---------------------------------------------------------------------------------------------------------------------------------------------
** OUTPUT, FIELD, FREQUENCY=10
** *NODE PRINT, nset=mittelknoten
** U
** *Node Print, Nset=lager
** RF1, RF2, RF3
*End Step
*Step
*Frequency
20,,
** *OUTPUT,History, FREQUENCY=1
**OUTPUT, History, VARIABLE=PRESELECT, FREQUENCY=1
*End Step
**----------------------------------------------------------------------------------------------
**
**----------------------------------------------------------------------------------------------
*NSET, nset=sinus
22,33,37
*NSET, nset=mittelknoten
79
**----------------------------------------------------------------------------------------------
**
**----------------------------------------------------------------------------------------------
*Step
*STEADY STATE DYNAMICS, INTERVAL=EIGENFREQUENCY
0, 20,100, 3, 1
**SELECT EIGENMODES
**3
*CLOAD
22, 1, 1
33, 1, 1
37, 1, 1
*OUTPUT, HISTORY
*Node output, nset=mittelknoten
U,CF
*End Step
**Lastgesteuert
** *STEP, INC=1000 **10 by default
** *STATIC
** 1, 100, ,1
** *CLOAD
** 37, 2, -3000
** *OUTPUT,HISTORY,OP=ADD,FREQUENCY=5
** *Node output, nset=mittelknoten
** U1,U2, CF
** *Node output, nset=lager
** RF1, RF2, RF3
** *Energy output
** ALLPD
** *END STEP
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