例句與造句

1. Study and application of sidewall instability criteria
   井壁失穩(wěn)判斷準(zhǔn)則及應(yīng)用分析
2. The influence of strain gradient is taken into account in the constitutive relation of coal or rock , the instability criterion of coal pillar is given , the influence factors of rock burst in coal pillar are analyzed
   在煤巖體本構(gòu)關(guān)系中考慮應(yīng)變梯度的影響，得到了煤柱的失穩(wěn)判據(jù)，進(jìn)而分析了煤柱巖爆的影響因素。
3. According to the former mathematical calculation models , the applied software , which uses the forming limit stress diagram as its instability criterion , is developed based on the sheet metal forming finite element code dynaform using visual c + +
   根據(jù)以上所建立的數(shù)學(xué)計算模型,基于板成形專用有限元分析軟件dynaform的環(huán)境,用visualc + +開發(fā)了以成形極限應(yīng)力圖作為判據(jù)的應(yīng)用軟件。
4. From a nonlinear equation with boussinesq similarity on the f plane including friction dissociation and using a new kind of general energy as lyapunov function , we got the nonlinear subcritical symmetric instability criterion which a new kind of symmetric stability criterions . the nonlinear subcritical symmetric instability indicates that the larger amplitude disturb may cause the its instability to increase and then excite the mesoscale rainstorm
   非線性亞臨界對稱不穩(wěn)定判據(jù)是從含摩擦耗散的f平面上boussinesq近似下的非線性方程出發(fā)，以一種新的廣義能量作為lyapunov函數(shù)，導(dǎo)得的一種新的對稱穩(wěn)定性判據(jù)，理論指出較大振幅的擾動可能出現(xiàn)非線性亞臨界對稱不穩(wěn)定增長，從而激發(fā)中尺度暴雨擾動的生成。
5. In view of the above reason , this thesis adopts the forming limit stress diagram as the instability criterion due to its independence of strain paths , which is acknowledged at home and abroad in the field of sheet metal forming , and develops the applied software for the special purpose finite element analysis code dynaform in order to provide it with a new instability criterion
   本文基于板成形專用有限元分析軟件dynaform ,以國內(nèi)外板料成形領(lǐng)域認(rèn)同的具有應(yīng)變路徑獨立性優(yōu)點的成形極限應(yīng)力圖為判據(jù)進(jìn)行了應(yīng)用軟件的二次開發(fā),以期為板成形有限元分析軟件提供一個新的失穩(wěn)判據(jù)。
6. It's difficult to find instability criterion in a sentence. 用instability criterion造句挺難的
7. The finite element numerical simulation analysis is an important method to predict sheet metal instability in the sheet metal forming process . and the current general - purpose finite element codes all choose the strain - based forming limit diagram as the instability criterion , which has the limitation of correlative to the strain path . thus it is very inconvenient to study sheet metal forming under complex strain paths
   有限元模擬是板料成形過程中預(yù)測板料失穩(wěn)的重要手段,考慮到當(dāng)前通用的有限元軟件都是以存在應(yīng)變路徑相關(guān)性缺陷的基于應(yīng)變的成形極限圖為失穩(wěn)判據(jù),以致在研究復(fù)雜應(yīng)變路徑板成形時極為不便。
8. This thesis briefly analyzes some yield criteria and instability criteria to the sheet metal forming first . then according to the transformation rule from ultimate strain to ultimate stress , it establishes the mathematical calculation models of the forming limit stress diagram for the software development according to hill48 、 hill79 and hosford yield criterion irrespectively
   本文首先分析了板料成形的屈服準(zhǔn)則和失穩(wěn)準(zhǔn)則,然后根據(jù)極限應(yīng)變到極限應(yīng)力的轉(zhuǎn)換關(guān)系,分別采用hill48屈服準(zhǔn)則、 hill79屈服準(zhǔn)則和hosford屈服準(zhǔn)則,建立了用于軟件開發(fā)的成形極限應(yīng)力圖的數(shù)學(xué)計算模型。
9. First using analytical method , we obtained the nonlinear baroclinic subcritical instability criterion and symmetric subcritical instability criterion . second using numerical experiments , we analyzed the influenced fact on the baroclinic subcritical instability , and we also analyzed what the nonlinear subcritical symmetric instability effects on a rainstorm , and advanced a new mechanism produced the rainstorm
   本文利用解析方法導(dǎo)得了大氣中非線性斜壓亞臨界穩(wěn)定性判據(jù)和對稱亞臨界穩(wěn)定性判據(jù)；并分別用數(shù)值試驗方法分析了斜壓亞臨界不穩(wěn)定的影響因素以及亞臨界對稱不穩(wěn)定在一場暴雨過程中所起的作用，提出了產(chǎn)生暴雨的新的物理機制。