!EXPANSION_COEFF¶
Chiziqli issiqlik kengayish koeffitsiyentini aniqlash
Bu yerda kiritiladigan chiziqli issiqlik kengayish koeffitsiyenti har bir haroratdagi chiziqli issiqlik kengayish koeffitsiyenti \(\alpha\) ning o‘zi emas, balki quyidagi tenglamada ko‘rsatilganidek, tayanch harorat \(T_\mathrm{ref}\) dan har bir \(T\) haroratgacha bo‘lgan oraliqdagi o‘rtacha qiymatdir.
\[\begin{equation} \hat{\alpha}_T = \frac{1}{T-T_\mathrm{ref}} \int_{T_\mathrm{ref}}^{T^\prime} \alpha(T^\prime) dT^\prime \end{equation}\]
Rasmda ko‘k punktir chiziq qiyaligi \(T\) haroratdagi chiziqli issiqlik kengayish koeffitsiyenti \(\alpha(T)\), yashil uzluksiz chiziq qiyaligi esa tayanch harorat \(T_\mathrm{ref}\) dan \(T\) haroratgacha bo‘lgan oraliq o‘rtachasi \(\hat{\alpha}_T\) dir.
Parametrlar¶
TYPE = material turi
ISOTROPIC (izotrop: sukut bo‘yicha) / ORTHOTROPIC (ortotrop)
DEPENDENCIES = 0 (sukut bo‘yicha) / 1
** 2-qator va undan keyingi qatorlar **
TYPE=ISOTROPIC bo‘lganda¶
TYPE=ORTHOTROPIC bo‘lganda¶
| O‘zgaruvchi nomi | Atribut | Tavsif |
|---|---|---|
| expansion | R | Chiziqli issiqlik kengayish koeffitsiyenti |
| α11, α22, α33 | R | Chiziqli issiqlik kengayish koeffitsiyenti |
| Temperature | R | Harorat (DEPENDENCIES=1 bo‘lganda talab qilinadi) |