Analisis Statik Nonlinear (Elastoplastisitas 2)¶
Analisis ini menggunakan data tutorial/06_plastic_can.
Objek Analisis¶
Objek analisis adalah model setengah dari sebuah wadah. Geometrinya ditunjukkan pada Gambar 4.6.1 dan data mesh-nya pada Gambar 4.6.2.
| Item | Deskripsi | Catatan | Referensi |
|---|---|---|---|
| Jenis analisis | Analisis statik nonlinear (elastoplastisitas) | !SOLUTION,TYPE=NLSTATIC | |
| Jumlah node | 14,119 | ||
| Jumlah elemen | 7,236 | ||
| Jenis elemen | Elemen tetrahedral kuadratik 10-node | !ELEMENT,TYPE=342 | |
| Nama material | M1 | !MATERIAL,NAME=M1 | |
| Sifat material | ELASTIC PLASTIC | !ELASTIC !PLASTIC,YIELD=DRUCKER-PRAGER | |
| Kondisi batas | Pengekangan, beban terdistribusi | !DLOAD | |
| Solver matriks | CG/SSOR | !SOLVER,METHOD=CG,PRECOND=1 |
Gambar 4.6.1 Geometri wadah
Gambar 4.6.2 Data mesh wadah
Rincian Analisis¶
Analisis tegangan dilakukan dengan mengekang perpindahan pada permukaan yang ditunjukkan pada Gambar 4.6.1 dan menerapkan beban terdistribusi pada permukaan bagian dalam wadah. Model Drucker-Prager digunakan untuk fungsi luluh. Data kontrol analisis ditunjukkan di bawah ini.
Data Kontrol Analisis can.cnt¶
# Control File for FISTR
## Analysis Control
!VERSION
3
!SOLUTION, TYPE=NLSTATIC
!WRITE,RESULT
!WRITE,VISUAL
## Solver Control
### Boundary Condition
!BOUNDARY, GRPID=1
BND0, 3, 3, 0.000000
!BOUNDARY, GRPID=1
BND1, 1, 1, 0.000000
BND1, 2, 2, 0.000000
BND1, 3, 3, 0.000000
!DLOAD, GRPID=1
DL0, S, 1.0
!DLOAD, GRPID=1
DL1, S, 1.0
!DLOAD, GRPID=1
DL2, S, 0.5
### STEP
!STEP, SUBSTEPS=10, CONVERG=1.0e-5
BOUNDARY, 1
LOAD, 1
### Material
!MATERIAL, NAME=M1
!ELASTIC
24000.0, 0.2
!PLASTIC, YIELD=DRUCKER-PRAGER
500.0, 20.0, 0.0
### Solver Setting
!SOLVER,METHOD=CG,PRECOND=1,ITERLOG=NO,TIMELOG=YES
20000, 1
1.0e-8, 1.0, 0.0
## Post Control
!VISUAL,method=PSR
!surface_num=1
!surface 1
!output_type=VTK
!END
Prosedur Analisis¶
Jalankan perintah eksekusi FrontISTR fistr1.
(Dijalankan dengan 4 thread)
Hasil Analisis¶
Untuk hasil analisis pada sublangkah ke-10, diagram deformasi dengan kontur tegangan von Mises dibuat menggunakan REVOCAP_PrePost dan ditunjukkan pada Gambar 4.6.3. Faktor pembesaran deformasi ditetapkan sebesar 30. Selain itu, sebagian file log hasil analisis ditampilkan di bawah sebagai data numerik hasil analisis.
Gambar 4.6.3 Hasil analisis deformasi dan tegangan 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 1.6169E+00 1600 -1.6123E+00 11901
//U2 1.9281E+01 6877 -4.5296E-01 7096
//U3 1.6087E+00 7016 -1.5107E+00 6934
//E11 9.9108E-04 11242 -6.5834E-04 1404
//E22 1.5025E-03 13972 -5.4245E-04 2367
//E33 9.8320E-04 6833 -6.4744E-04 7000
//E12 1.6822E-03 2698 -1.7175E-03 11906
//E23 1.7082E-03 6749 -1.4469E-03 13509
//E31 1.2090E-03 12475 -1.1181E-03 11342
//S11 2.7781E+01 1086 -1.9439E+01 2363
//S22 3.7876E+01 13972 -1.4556E+01 2367
//S33 2.7335E+01 1086 -1.9745E+01 13082
//S12 1.6817E+01 2698 -1.7170E+01 11906
//S23 1.7077E+01 6749 -1.4463E+01 13509
//S31 1.2086E+01 12475 -1.1178E+01 11342
//SMS 3.7448E+01 2834 2.7593E-04 7333
##### Local Summary @Element :Max/IdMax/Min/IdMin####
//E11 5.8557E-04 6613 -4.0802E-04 6416
//E22 1.1391E-03 7144 -3.1424E-04 6613
//E33 6.9233E-04 6130 -4.5897E-04 6222
//E12 1.1076E-03 165 -1.1101E-03 5196
//E23 1.4338E-03 6215 -9.2107E-04 6176
//E31 9.6618E-04 5618 -7.4939E-04 4704
//S11 1.7994E+01 6613 -1.2254E+01 6224
//S22 2.7863E+01 7144 -7.3017E+00 24
//S33 1.9725E+01 6613 -1.3385E+01 6222
//S12 1.1072E+01 165 -1.1097E+01 5196
//S23 1.4332E+01 6215 -9.2080E+00 6176
//S31 9.6603E+00 5618 -7.4918E+00 4704
//SMS 3.3151E+01 5619 3.3306E-04 2665
##### Global Summary @Node :Max/IdMax/Min/IdMin####
//U1 1.6169E+00 1600 -1.6123E+00 11901
//U2 1.9281E+01 6877 -4.5296E-01 7096
//U3 1.6087E+00 7016 -1.5107E+00 6934
//E11 9.9108E-04 11242 -6.5834E-04 1404
//E22 1.5025E-03 13972 -5.4245E-04 2367
//E33 9.8320E-04 6833 -6.4744E-04 7000
//E12 1.6822E-03 2698 -1.7175E-03 11906
//E23 1.7082E-03 6749 -1.4469E-03 13509
//E31 1.2090E-03 12475 -1.1181E-03 11342
//S11 2.7781E+01 1086 -1.9439E+01 2363
//S22 3.7876E+01 13972 -1.4556E+01 2367
//S33 2.7335E+01 1086 -1.9745E+01 13082
//S12 1.6817E+01 2698 -1.7170E+01 11906
//S23 1.7077E+01 6749 -1.4463E+01 13509
//S31 1.2086E+01 12475 -1.1178E+01 11342
//SMS 3.7448E+01 2834 2.7593E-04 7333
##### Global Summary @Element :Max/IdMax/Min/IdMin####
//E11 5.8557E-04 6613 -4.0802E-04 6416
//E22 1.1391E-03 7144 -3.1424E-04 6613
//E33 6.9233E-04 6130 -4.5897E-04 6222
//E12 1.1076E-03 165 -1.1101E-03 5196
//E23 1.4338E-03 6215 -9.2107E-04 6176
//E31 9.6618E-04 5618 -7.4939E-04 4704
//S11 1.7994E+01 6613 -1.2254E+01 6224
//S22 2.7863E+01 7144 -7.3017E+00 24
//S33 1.9725E+01 6613 -1.3385E+01 6222
//S12 1.1072E+01 165 -1.1097E+01 5196
//S23 1.4332E+01 6215 -9.2080E+00 6176
//S31 9.6603E+00 5618 -7.4918E+00 4704
//SMS 3.3151E+01 5619 3.3306E-04 2665