Analisis Statik Tak Linear (Viskoelastik)¶
Analisis ini menggunakan data dalam tutorial/07_viscoelastic_cylinder.
Sasaran Analisis¶
Sasaran analisis ialah model 1/8 batang bulat yang sama seperti dalam Analisis Statik Tak Linear (Hiperanjal, Bahagian 1).
| Item | Kandungan | Catatan | Rujukan |
|---|---|---|---|
| Jenis analisis | Analisis statik tak linear (elastoplastik) | !SOLUTION,TYPE=NLSTATIC | |
| Bilangan nod | 629 | ||
| Bilangan unsur | 432 | ||
| Jenis unsur | Unsur heksahedron linear 8 nod | !ELEMENT,TYPE=361 | |
| Nama bahan | MAT1 | !MATERIAL,NAME=MAT1 | |
| Sifat bahan | ELASTIC,VISCOELASTIC | !ELASTIC !VISCOELASTIC | |
| Syarat sempadan | Kekangan, sesaran ditetapkan | ||
| Penyelesai matriks | CG/SSOR | !SOLVER,METHOD=CG,PRECOND=1 |
Kandungan Analisis¶
Analisis kelonggaran tegasan dijalankan dengan mengenakan sesaran tegangan dalam arah paksi pada batang bulat. Data kawalan analisis ditunjukkan di bawah.
Data kawalan analisis cylinder.cnt¶
# Fail Kawalan untuk FISTR
## Kawalan Analisis
!VERSION
3
!SOLUTION, TYPE=NLSTATIC
!WRITE,VISUAL
!WRITE,RESULT
## Kawalan Penyelesai
### Syarat Sempadan
!BOUNDARY, GRPID=1
LOADS, 3, 3, -7.0
FIX, 3, 3, 0.0
XSYMM, 1, 1, 0.0
YSYMM, 2, 2, 0.0
### STEP
!STEP, TYPE=VISCO, CONVERG=1.0e-5
0.2, 2.0
BOUNDARY, 1
### Bahan
!MATERIAL, NAME=MAT1
!ELASTIC
206900.0, 0.29
!VISCOELASTIC
0.5, 1.0
### Tetapan Penyelesai
!SOLVER,METHOD=CG,PRECOND=1,ITERLOG=YES,TIMELOG=YES
10000, 1
1.0e-8, 1.0, 0.0
## Kawalan Pascapemprosesan
!VISUAL,method=PSR
!surface_num=1
!surface 1
!output_type=VTK
!END
Prosedur Analisis¶
Jalankan perintah pelaksanaan FrontISTR fistr1.
(Dijalankan dengan 4 bebenang)
Hasil Analisis¶
Rajah ubah bentuk dengan kontur tegasan von Mises dihasilkan menggunakan REVOCAP_PrePost dan ditunjukkan dalam Rajah 4.7.1. Ini ialah hasil analisis selepas 2 saat (langkah ke-10). Selain itu, sebahagian fail log hasil analisis ditunjukkan di bawah sebagai data berangka hasil analisis.
Rajah 4.7.1　Hasil analisis ubah bentuk dan tegasan von Mises
Log hasil analisis 0.log¶
fstr_setup: OK
#### Result step= 0
##### Local Summary @Node :Max/IdMax/Min/IdMin####
//U1 0.0000E+00 1 0.0000E+00 1
//U2 0.0000E+00 1 0.0000E+00 1
//U3 0.0000E+00 1 0.0000E+00 1
//E11 0.0000E+00 1 0.0000E+00 1
//E22 0.0000E+00 1 0.0000E+00 1
//E33 0.0000E+00 1 0.0000E+00 1
//E12 0.0000E+00 1 0.0000E+00 1
//E23 0.0000E+00 1 0.0000E+00 1
//E31 0.0000E+00 1 0.0000E+00 1
//S11 0.0000E+00 1 0.0000E+00 1
//S22 0.0000E+00 1 0.0000E+00 1
//S33 0.0000E+00 1 0.0000E+00 1
//S12 0.0000E+00 1 0.0000E+00 1
//S23 0.0000E+00 1 0.0000E+00 1
//S31 0.0000E+00 1 0.0000E+00 1
//SMS 0.0000E+00 1 0.0000E+00 1
##### Local Summary @Element :Max/IdMax/Min/IdMin####
//E11 0.0000E+00 1 0.0000E+00 1
//E22 0.0000E+00 1 0.0000E+00 1
//E33 0.0000E+00 1 0.0000E+00 1
//E12 0.0000E+00 1 0.0000E+00 1
//E23 0.0000E+00 1 0.0000E+00 1
//E31 0.0000E+00 1 0.0000E+00 1
//S11 0.0000E+00 1 0.0000E+00 1
//S22 0.0000E+00 1 0.0000E+00 1
//S33 0.0000E+00 1 0.0000E+00 1
//S12 0.0000E+00 1 0.0000E+00 1
//S23 0.0000E+00 1 0.0000E+00 1
//S31 0.0000E+00 1 0.0000E+00 1
//SMS 0.0000E+00 1 0.0000E+00 1
##### Global Summary @Node :Max/IdMax/Min/IdMin####
//U1 0.0000E+00 1 0.0000E+00 1
//U2 0.0000E+00 1 0.0000E+00 1
//U3 0.0000E+00 1 0.0000E+00 1
//E11 0.0000E+00 1 0.0000E+00 1
//E22 0.0000E+00 1 0.0000E+00 1
//E33 0.0000E+00 1 0.0000E+00 1
//E12 0.0000E+00 1 0.0000E+00 1
//E23 0.0000E+00 1 0.0000E+00 1
//E31 0.0000E+00 1 0.0000E+00 1
//S11 0.0000E+00 1 0.0000E+00 1
//S22 0.0000E+00 1 0.0000E+00 1
//S33 0.0000E+00 1 0.0000E+00 1
//S12 0.0000E+00 1 0.0000E+00 1
//S23 0.0000E+00 1 0.0000E+00 1
//S31 0.0000E+00 1 0.0000E+00 1
//SMS 0.0000E+00 1 0.0000E+00 1
##### Global Summary @Element :Max/IdMax/Min/IdMin####
//E11 0.0000E+00 1 0.0000E+00 1
//E22 0.0000E+00 1 0.0000E+00 1
//E33 0.0000E+00 1 0.0000E+00 1
//E12 0.0000E+00 1 0.0000E+00 1
//E23 0.0000E+00 1 0.0000E+00 1
//E31 0.0000E+00 1 0.0000E+00 1
//S11 0.0000E+00 1 0.0000E+00 1
//S22 0.0000E+00 1 0.0000E+00 1
//S33 0.0000E+00 1 0.0000E+00 1
//S12 0.0000E+00 1 0.0000E+00 1
//S23 0.0000E+00 1 0.0000E+00 1
//S31 0.0000E+00 1 0.0000E+00 1
//SMS 0.0000E+00 1 0.0000E+00 1
...
#### Result step= 10
##### Local Summary @Node :Max/IdMax/Min/IdMin####
//U1 0.0000E+00 1 -7.4530E-01 91
//U2 0.0000E+00 1 -7.4530E-01 88
//U3 0.0000E+00 1 -7.0000E+00 38
//E11 -1.2136E-01 38 -1.2719E-01 7
//E22 -1.2136E-01 50 -1.2719E-01 13
//E33 2.3670E-01 7 2.2951E-01 50
//E12 1.2005E-03 53 -1.2295E-03 10
//E23 1.2987E-04 72 -2.5210E-03 83
//E31 1.2987E-04 64 -2.5210E-03 96
//S11 1.3771E+02 13 -1.3366E+02 50
//S22 1.3771E+02 7 -1.3366E+02 38
//S33 6.3193E+04 7 5.9532E+04 50
//S12 3.5416E+01 53 -3.5955E+01 10
//S23 1.0704E+01 35 -2.1669E+02 83
//S31 1.0704E+01 31 -2.1669E+02 96
//SMS 6.3093E+04 7 5.9628E+04 50
##### Local Summary @Element :Max/IdMax/Min/IdMin####
//E11 -1.2167E-01 759 -1.2687E-01 354
//E22 -1.2167E-01 768 -1.2687E-01 363
//E33 2.3619E-01 354 2.3001E-01 768
//E12 1.1247E-03 765 -1.1492E-03 360
//E23 -8.9560E-06 758 -2.4072E-03 552
//E31 -8.9560E-06 771 -2.4072E-03 543
//S11 1.0437E+02 363 -1.0216E+02 768
//S22 1.0437E+02 354 -1.0216E+02 759
//S33 6.2914E+04 354 5.9795E+04 768
//S12 3.3111E+01 765 -3.3459E+01 360
//S23 -7.6469E-01 758 -2.0669E+02 552
//S31 -7.6469E-01 771 -2.0669E+02 543
//SMS 6.2843E+04 354 5.9864E+04 768
##### Global Summary @Node :Max/IdMax/Min/IdMin####
//U1 0.0000E+00 1 -7.4530E-01 91
//U2 0.0000E+00 1 -7.4530E-01 88
//U3 0.0000E+00 1 -7.0000E+00 38
//E11 -1.2136E-01 38 -1.2719E-01 7
//E22 -1.2136E-01 50 -1.2719E-01 13
//E33 2.3670E-01 7 2.2951E-01 50
//E12 1.2005E-03 53 -1.2295E-03 10
//E23 1.2987E-04 72 -2.5210E-03 83
//E31 1.2987E-04 64 -2.5210E-03 96
//S11 1.3771E+02 13 -1.3366E+02 50
//S22 1.3771E+02 7 -1.3366E+02 38
//S33 6.3193E+04 7 5.9532E+04 50
//S12 3.5416E+01 53 -3.5955E+01 10
//S23 1.0704E+01 35 -2.1669E+02 83
//S31 1.0704E+01 31 -2.1669E+02 96
//SMS 6.3093E+04 7 5.9628E+04 50
##### Global Summary @Element :Max/IdMax/Min/IdMin####
//E11 -1.2167E-01 759 -1.2687E-01 354
//E22 -1.2167E-01 768 -1.2687E-01 363
//E33 2.3619E-01 354 2.3001E-01 768
//E12 1.1247E-03 765 -1.1492E-03 360
//E23 -8.9560E-06 758 -2.4072E-03 552
//E31 -8.9560E-06 771 -2.4072E-03 543
//S11 1.0437E+02 363 -1.0216E+02 768
//S22 1.0437E+02 354 -1.0216E+02 759
//S33 6.2914E+04 354 5.9795E+04 768
//S12 3.3111E+01 765 -3.3459E+01 360
//S23 -7.6469E-01 758 -2.0669E+02 552
//S31 -7.6469E-01 771 -2.0669E+02 543
//SMS 6.2843E+04 354 5.9864E+04 768