模型內壓 的英文怎麼說
中文拼音 [móxíngnèiyā]
模型內壓
英文
in-mold pressure-
In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後,對巖土工程領域至今尚未解決,甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討,提出了考慮地基變形的地基承載力上程計算方法;對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎(空間問題)的承載力界限荷載p _ ( 1 / 4 ) ,並與國內外土力學專著及地基基礎設計規范中的條形基礎(平面問題)的界限荷載p _ ( 1 / 4 ) ,進行了對比,從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況;根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作,本文以截頭錐模型模擬地基,對地基(巖基)承載力的動測法進行了研究,為各類地基(包括巖基) ,匯總了動力分析和檢測川的參數:針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題,從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論;本文作者根據多年現場載荷試驗的工程實踐,對深井荷試驗裝置的核心部分? ?反力裝置,設計了側壁支撐反力加載系統,該加載系統具有實用、簡便、穩定及安個等優點。And rock triaxial serve testing system is used, through model test involving bedded planes and a set of joint normal to the bedded planes in rock mass, multiple sliding failure affected by properties of joints and confining pressure is analysed, the condition triggering multiple sliding failure and characteristics of failure plane are given, under the co - action of inclination of connective joints ( bedded planes ), interlocking conditions of critical joints and confining pressure
並在室內利用巖石三軸剛性伺服機,通過模型試驗對巖體的層面和一組與層面正交的節理的情況進行模擬研究,分析了結構面性狀和圍壓對復合式滑移破壞的影響,給出了在貫通性結構面(層面)傾角、非貫通性結構面以及圍壓等因素共同作用下,節理化巖體發生復合式滑移破壞的條件以及破壞面特徵。The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed
文中利用齒墩設施實現附加射流,對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗,分析研究了中低佛勞德數條件下,齒墩墩頭的動水壓強及空化特性,齒墩設施與消力池聯合應用時的流態特性,消力池的水力計算,消能量的估算及其各種影響因素,消能機理和效果,消力池內的流速、壓強特性,摻氣濃度分佈等水力學問題,並提出了實現附加射流齒墩設施的水力設計方法和步驟。The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. the model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20 %
復合塔板的壓降可認為由干板壓降、清液層阻力、填料層壓降和克服液體表面張力的壓降四部分組成,所建立的壓降計算模型,能較好地預測復合塔板的壓降,計算值與實驗值誤差在20以內,可用於工程設計。In the evaluation of the structural safety, the assurance coefficient of structure can be received by loading structural models, the endogen force of computation structures, the eccentric compression and the safe criterion
結構安全性評價,通過荷載結構模型計算結構內力,並根據偏心受壓構件的安全判定標準,評價結構的安全系數。Chaotic vibration and suppression of a fluid - conveying curved pipe by considering the effect of internal fluid pressure
考慮內流壓力時輸流曲管的混沌運動及其抑制模型By analyzing and experimentally verifying the model, new ways of improving mixer performance were put forward. ( 1 ) heat water should be used in the mixer ' s temperature control to make the mixer work with optimal parameters. ( 2 ) the surface materials of the mixing chamber and rotors should be chosen rationally to change material surface energy and increase friction on them. ( 3 ) when the compound was processed under higher pressure of floating weight, shallow groovers or stripes parallel to the axle of the rotor should be made on the mixing chamber internal wall to increase the real contact area and improve mixing effect
通過對模型的分析和實驗驗證,提出了提高密煉機混煉效果的新途徑: ( 1 )密煉機溫度控制採用溫水冷卻,使密煉機處于最佳工作狀態; ( 2 )通過合理選擇密煉室和轉子表面材料以改變材料表面能來增大膠料與它們之間的摩擦力; ( 3 )在上頂栓壓力較大的條件下,在密煉室內壁與轉子軸線同方向加工淺的光滑槽可明顯改善混煉效果。( 2 ) the liman problem is normally adopted to check the liability of numerical method. the calculation error was within 9 % by comparison with the theoretic solutions of liman problem in the following case, the dimensionless calculation length was 2 with high pressure zone 0. 8, and the dimensionless state parameters were p1 = 2, p2 = 1, p1 = p2 = 1, u1 = u2 = 0. experiment results in literature [ 8 ] were used to check the adaptability of the numerical model developed here for unconfined gas cloud explosions and the calculation error was within 13 %
( 2 )數值方法的可靠性通常用黎曼問題的解析解檢驗,本文以無量綱計算區長度為2 ,高壓區長度為0 . 8 ,狀態參數為p _ 1 = 2 , p _ 2 = 1 , _ 1 = _ 2 = 1 , u _ 1 = u _ 2 = 0條件下的黎曼問題解析解對所編制的爆炸場計算程序進行了考核,結果表明該程序的計算誤差在9以內;為考核本文計算模型預測開敞空間氣雲爆炸的適用性,以文獻[ 8 ]的實驗數據進行了校核,計算誤差在13以內。The three - dimensional analytic model on laminated piezoelectric shells is also studied. the main achievements are summarized as follows : firstly, buckling models for beams and cylindrical shells with arbitrary penetrative delaminations are established based on the first and higher - order shear deformation theory
本文研究工作的重點是建立含內埋脫層的復合材料層合結構的屈曲分析模型,其次是建立壓電層合殼的三維分析模型。The important meaning in which this direction studied has lain in establishing the connection between the material science of concrete and civil engineering, analyse the strength in terms of material microcosmic or the mesoscopic, have important meaning to understanding, know the essential law of the strength of concrete. this text divides six chapters altogether. chapter one reviewed the pore structure in nowadays domestic and international research current situation, including the concrete examines research, research of the pore structure model and the research current situations of pore structure and strength relation of the pore method, have introduced some most important achievements of structure research of pore ; chapter two narrated much yardstick of the material mesoscopic structure of concrete and principle of examining pore technology of material of concrete, and the commonly used sign parameter in discussedding the pore and material pore of quito of cement and analyse, have explained that the influence factor of mip to the result of study of pore, has pointed out the limitation in mip in the pore structure ; analyse porosity and strength relation development course of model emphatically, and has carried on comparative analysis to the existing model, has pointed out the weak point of the original model ; on the basis of " ing integrate synthetically ", propose concrete pore structure compound body model and pore physical model of systemlex body ; chapter five carried on the corresponding test data to compares to the model parameter appearing in model of chapter four with and analyses, have received k value of the characteristic of strength of matrices of reflecting according to the method to return to analysis, and calculate the influence produced on the strength of concrete in revision that can probed into the content of cement, elastic mould and surface energy, exactness of the inspection model ; chapter six is the conclusion, according to studying the survey this text to some research conclusions of the pore structure and making corresponding prospect to the structure development of pore
第一章回顧了孔結構在當今國內外的研究現狀,包括混凝土測孔方法的研究、孔結構模型的研究及孔結構與強度關系的研究現狀,介紹了孔結構研究方面的一些最重要的成果;第二章敘述了混凝土材料細觀結構的多尺度性及混凝土材料測孔技術的原理,並討論了水泥基多孔材料孔隙分析中常用的表徵參數,也說明了壓汞法測孔對研究結果的影響因素,指出了壓汞法在孔結構研究中的局限性;第三章是著重分析了孔隙率與強度關系模型的發展歷程,並對已有的模型進行了比較分析,指出了原有模型的不足之處;第四章在「綜合集成」的基礎上,提出了混凝土孔結構復合體模型和孔系統的物理模型,並模擬了該模型下由各單體並聯形成的復合體的斷裂過程,最後根據所建模型編制了相應的計算程序,可根據輸入的孔徑分佈與水泥含量等參數,實現混凝土理論強度的計算;第五章對第四章模型中出現的模型參數進行了相應的試驗數據對比分析,根據回歸分析的方法得到了反映基體強度特徵的k值,並從理論上探討了水泥含量、彈性模量和表面能的修正對混凝土強度計算產生的影響,檢驗模型的正確性;第六章是結論與展望,根據研究綜述了本文對孔結構的一些研究結論並對孔結構發展作了相應的展望。Based on this model, the effects of geometric and structural parameters, such as injection pressure, rear pressure, length - diameter ratio, inlet round angle - radius ratio and non - axis symmetry of nozzle, on the distribution of the cavitation inside the nozzle are analyzed
基於這一模型進一步分析了噴射壓力、背壓和噴孔長徑比、噴孔入口圓角比、非軸對稱噴孔等幾何結構參數對噴孔內空穴分佈的影響。15 doo d, sabin m. analysis of the behavior of recursive division surfaces near extraordinary points. computer aided design, 1978, 10 : 356 - 360. 16 zorin d, schr " oder p. subdivision for modeling and animation
數字幾何處理的研究內容主要包括:幾何模型獲取曲面光順細分多解析度分析參數化網格編輯幾何壓縮形狀比較以及基於點的模型等等。As part of this effort, an integrated scramjet model is about to begin testing at up to mach 5. 6 in a new wind tunnel in beijing
作為該項工作的一部分,一個可達5 . 6馬赫的綜合沖壓模型即將在北京的一個新的風洞內開始測試。The feedbacks of position, velocity, acceleration and dynamic pressure were applied to adjust the model, so the control system of single jar electrodraulic servo mechanism was built. to reduce the system error and interference error, the compound control was designed. the results of simulations showed that the magnitude attenuation and phase lag of the system come to the project demand
引入包括位置反饋、速度反饋、加速度反饋和動壓反饋在內的反饋控制技術對電液伺服驅動機構模型進行綜合校正,從而建立單缸電液伺服控制系統,並在分析系統誤差和擾動誤差后,加入復合控制減小系統誤差和抑制干擾,模擬結果表明復合控制系統的控製品質有了明顯改善,能夠滿足工程需求。Now some universities and institutes of china have made some samples of the lunar rovers and theirs wheels, but until now the wheel ’ s mechanical performance is seldom researched and tested. this paper will analyze the mechanical performance of the wheel and design a test - bed to test the performance of the lunar rover ’ s wheel. firstly, the mechanical characters of the soil are separated to press - sinkage character and shear character based on bekker ’ s theory, and common press - sinkage and shear models are introduced and the theory of lankine passive earth pressure is also introduced
根據bekker半經驗法的基本思想,將土壤的力學特性分解為水平方向的剪切特性和豎直方向的承壓特性,闡述了地面力學中常見的土壤的承壓、剪切等力學模型,並引入了朗肯被動土壓力理論,為建立車輪在松軟土壤中前進和轉向的力學模型奠定了基礎,同時進行了實驗土壤的剪切實驗,測量了土壤的內聚力和內摩擦角等參數。With the superimpose model, the formula of the stress calculation of the elbows with elliptic section and nonuniform thickness was proposed in this paper. the formula is versified by the experiment of two elbows
利用疊加模型,提出橢圓截面變厚度彎管承受內壓時的應力計算力學模型,並通過兩支彎管的實驗得到驗證。It adopts reynolds time - average n - s equation and k - ? turbulence model to calculate the inner 3 - d viscid turbulence flow of centrifugal pump. in the unstructured grid, the governing equations are discretized with finite volume method based on finite element method. then the pressure correction method is used to carry out numerical calculation
而後採用基於雷諾時均n - s方程與標準-湍流模型來求解離心泵葉輪內三維粘性紊流,在非結構化網格中,採用基於有限元的有限體積法對方程進行離散,用壓力校正法進行數值求解。In addition, active constrained layer damping ( acld ) has attracted scholar ' s interests because it has the advantages of passive control and active control. the mechanism of vibration control of acld and the models of how to deal with the viscid - electric material are introduced. the finite element model of acld with ghm model is established in this paper
此外,主動層阻尼結構( acld )由於兼有被動控制和主動控制兩者之優點也引起了國內外學者的興趣,本文給出了主動層阻尼結構(約束層採用壓電材料)抑振的工作機理,介紹了處理粘彈性層( vem )的幾種模型,並採用ghm模型建立了主動層阻尼結構的有限元模型。Analysis is made on structure characteristics of the finned - tube, and analysis has been made on the special heat and mass transfer principle of every micro - unit under both dry and wet conditions. appropriate hypothesis is made and based on the energy, mass and momentum equivalent, the evaporator models of dynamic distributed parameters are set up. in addition, the gascooler and internal exchanger models of dynamic and distributed parameters, the throttling valve models and the compressor models are set up, too
本文的內容如下: 1對翅片管蒸發器的結構特點進行分析,選取適當的微元體,對于干、濕工況下每個微元分別進行傳熱傳質分析,通過適當的假設,利用質量守恆方程、能量守恆方程和動量守恆方程建立了蒸發器的分佈參數數學模型;對回熱器劃分微元建立了分佈參數數學模型;對氣體冷卻器建立了分佈參數數學模型;對壓縮機建立了數學模型;建立了節流閥的數學模型,為系統模擬奠定了基礎。In order to investigate the influence of characteristics parameters on detonation wave in a two - phase pulse detonation engine model. the peak detonation pressures and average velocities of two - phase pulsed detonation wave produced by pde model using gasoline as fuel and air as oxidizer under various ignition frequencies and various mixture ratios are measured systematically, and the relations influencing them are analyzed
為了探索氣-液兩相脈沖爆震發動機模型內特徵參數對產生爆震波的影響規律,系統地測試了以汽油為燃料、以空氣為氧化劑的氣-液兩相脈沖爆震發動機模型在不同點火頻率及不同余氣系數下爆震波的峰值壓力以及平均爆震波速,並對其變化進行了分析。分享友人