Modal tahlil uchun haqiqiy model misollari¶
Tahlil modellari¶
Modal tahlil uchun haqiqiy model verifikatsiya misollari 9.4.1-jadvalda keltirilgan. Ular orasida EX07 (turbina rotori) va EX08 (prujina) model shakllari 9.4.1 va 9.4.2-rasmlarda ko‘rsatilgan. Boshqa modellar shakli verifikatsiya mazmuni mos keladigan elastik statik tahlil misollari bilan bir xil bo‘lib, avvalroq ko‘rsatilgan. 731 va 741 element turlari misollarini bajarish uchun alohida to‘g‘ridan-to‘g‘ri yechuvchi talab qilinadi.
9.4.1-jadval Modal tahlil uchun haqiqiy model verifikatsiya misollari
| Holat nomi | Element turi | Verifikatsiya modeli | Tugunlar soni | Erkinlik darajalari soni |
|---|---|---|---|---|
| EX06 | 342 | Turbina kuragi | 10,095 | 30,285 |
| EX07 | 361 | Turbina rotori | 127,440 | 382,320 |
| EX08 | 342 | Prujina | 78,771 | 236,313 |
| EX09 | 741 | Silindrik qobiq | 10,100 | 60,600 |
| EX10A | 731 | Vino qadahi (dag‘al) | 7,240 | 43,440 |
| EX10B | 731 | Vino qadahi (o‘rta) | 48,803 | 292,818 |
9.4.1-rasm Turbina rotori (EX07)
9.4.2-rasm Prujina (EX08)
Tahlil natijalari¶
Tebranish modalari va tabiiy chastotalar quyida keltirilgan.
EX06 Turbina kuragi¶
 |  |
| (a) Moda 1 (1170 kHz) | (b) Moda 2 (3250 kHz) |
 |  |
| (c) Moda 3 (4130 kHz) | (d) Moda 4 (4140 kHz) |
 | |
| (e) Moda 5 (8210 kHz) |
9.4.3-rasm EX06 Turbina kuragi — tebranish modalari
EX07 Turbina rotori¶
 |  |
| (a) Moda 1 (1067 Hz) | (b) Moda 2 (1072 Hz) |
 |  |
| (c) Moda 3 (1072 Hz) | (d) Moda 4 (1093 Hz) |
 | |
| (e) Moda 5 (1093 Hz) | |
9.4.4-rasm EX07 Turbina rotori — tebranish modalari
EX08 Prujina¶
| Moda 1 (445 Hz) | Moda 2 (446 Hz) | Moda 3 (908 Hz) |
 |  |  |
| Moda 4 (985 Hz) | Moda 5 (1819 Hz) | |
 |  |
| FrontISTR | NASTRAN | |
|---|---|---|
| 1 | 445 Hz | 445 Hz |
| 2 | 446 Hz | 446 Hz |
| 3 | 908 Hz | 908 Hz |
| 4 | 985 Hz | 986 Hz |
| 5 | 1810 Hz | 1810 Hz |
9.4.5-rasm EX08 Prujina — tebranish modalari
EX09 Silindrik qobiq¶
(a) Modalar 1, 2 (109 Hz)
(b) Modalar 3, 4 (570 Hz)
(c) Moda 5 (615 Hz)
9.4.6-rasm EX09 Silindrik qobiq — tebranish modalari
EX10A Vino qadahi¶
 |  |  |
| (a) Moda 1 (101 Hz) | (b) Moda 2 (102 Hz) | (c) Moda 3 (354 Hz) |
 |  | |
| (d) Moda 4 (1335 Hz) | (e) Moda 5 (1336 Hz) |
9.4.7-rasm EX10A Vino qadahi — tebranish modalari