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Modal tahlil¶
Ushbu tahlilda tutorial/15_eigen_spring ma’lumotlaridan foydalaniladi.
Tahlil obyekti¶
Tahlil obyektlari oldingi bo‘limdagi Nochiziqli statik tahlil (giperelastiklik, 2-qism) bilan bir xil prujinalardir.
| Band | Tavsif | Izohlar | Havola |
|---|---|---|---|
| Tahlil turi | Modal tahlil | !SOLUTION, TYPE=EIGEN | |
| Tugunlar soni | 78,771 | ||
| Elementlar soni | 46,454 | ||
| Element turi | 10 tugunli ikkinchi tartibli tetraedr element | !ELEMENT,TYPE=342 | |
| Material nomi | MAT1 | !MATERIAL,NAME=MAT1 | |
| Chegaraviy shartlar | Cheklash | ||
| Matritsa yechuvchisi | To‘g‘ridan-to‘g‘ri usul | !SOLVER,METHOD=MUMPS |
Tahlil mazmuni¶
4.4.1-rasmda ko‘rsatilgan cheklangan sirtning ko‘chishi cheklanadi va beshinchi modagacha modal tahlil bajariladi. Tahlil boshqaruv ma’lumotlari quyida ko‘rsatilgan.
Tahlil boshqaruv ma’lumotlari spring.cnt¶
# Control File for FISTR
## Analysis Control
!VERSION
3
!SOLUTION, TYPE=EIGEN
!EIGEN
5, 1.0E-8, 60
!WRITE,RESULT
!WRITE,VISUAL
## Solver Control
### Boundary Condition
!BOUNDARY
XFIX, 1, 1, 0.0
YFIX, 2, 2, 0.0
ZFIX, 3, 3, 0.0
### Material
# define in mesh file
### Solver Setting
!SOLVER,METHOD=MUMPS
## Post Control
!VISUAL,method=PSR
!surface_num=1
!surface 1
!output_type=VTK
!END
Tahlil tartibi¶
FrontISTR ning fistr1 buyrug‘ini bajaring.
(4 ta oqimda bajariladi.)
Tahlil natijalari¶
Natija ma’lumotlari fayli spring.res.0.3 yordamida uchinchi tartibli tebranish modasi (prujinaning y yo‘nalishida siqilishi va cho‘zilishi) REVOCAP_PrePost bilan yaratiladi va 4.15.1-rasmda ko‘rsatiladi. Deformatsiya koeffitsiyenti 10 ga o‘rnatiladi. Bundan tashqari, tahlil natijalarining sonli ma’lumoti sifatida tahlil natijalari log fayliga chiqarilgan tabiiy chastotalar ro‘yxati quyida ko‘rsatilgan.
Tahlil natijalari jurnali 0.log¶
********************************
*RESULT OF EIGEN VALUE ANALYSIS*
********************************
### NUMBER OF ITERATIONS = 20
### TOTAL MASS = 3.4184E-06
PERIOD FREQUENCY PARTICIPATION FACTOR EFFECTIVE MASS
NO. [Sec] [HZ] X Y Z X Y Z
--- --------- --------- --------- --------- --------- --------- --------- ---------
1 2.245E-03 4.454E+02 1.029E+00 -8.894E-02 -7.052E-01 1.301E-06 9.718E-09 6.109E-07
2 2.239E-03 4.465E+02 6.969E-01 1.075E-01 1.011E+00 6.129E-07 1.460E-08 1.289E-06
3 1.100E-03 9.087E+02 4.862E-03 1.236E+00 -7.917E-02 4.007E-11 2.591E-06 1.062E-08
4 1.014E-03 9.858E+02 -2.965E-02 3.385E-01 -6.782E-03 9.823E-10 1.280E-07 5.138E-11
5 5.525E-04 1.810E+03 -5.867E-01 -5.386E-02 -7.659E-01 2.838E-07 2.391E-09 4.837E-07