模似試驗 的英文怎麼說
中文拼音 [mósìshìyàn]
模似試驗
英文
simulated test-
Similar simulated experiment for continuous mining and roof dilapidation of ore body underground
礦體地下連續開采頂板崩落相似模擬試驗Valuing of the influence degree of the additional temperature field of mutative temperature similar material in geomechanical model test
變溫相似材料在地質力學模型試驗中附加溫度場的影響程度評價This test is based on homogeneous soil in foundation, and divided into two phases. the first is to stimulate the construction flow to excavate the pit ; the second phase is destructive test. because the pit is stable in the first phase and the research is point to the geometry shape of the failure surface, moreover, limited to the test condition, the effective surface force is applied to the pit
此次模擬試驗主要是針對簡單均質的基坑土層進行研究,試驗分為兩個階段,第一階段主要是以相似工況模擬基坑開挖,第二階段主要是破壞性試驗,即由於在第一階段基坑在開挖范圍內能夠自穩,為使基坑達到破壞狀態以研究滑面幾何形態,限於試驗條件,採用「等代面力」的方式施加超載。The tank model with scale of 1 : 5 is built and model test is carried out. by dimension analysis, resemblance between archetype and model is confirmed. 2
設計製作了比例系數為1 : 5的罐體結構模型;通過對影響平臺罐體受力狀態的各主要物理量的量綱分析,確定了模型與原型結構的相似性;並進行了模型試驗。Compared the results of fea and the data of experiment, we can analyse that the distributing of the seismic stress of polymer - geogrid reinforced material is similar to that of the static stress, but the stress values of them is different ; the seismic similar friction coefficient between the earth and reinforced material fall with the increasing of earthquake acceleration, model acceleration respond along the height of the model, etc. thirdly, according to the comparison and analysis of the model seismic fea results and model experiment data, we can find the polymer - geogrid reinforced earth seismic fea is reasonable, which is composed by earth element, contact element and reinforced material element
通過對比有限元計算結果和試驗數據,分析得出塑料土工格柵筋材的最大動拉應力的分佈與靜拉應力的分佈沿筋材的埋深大致相同,只是應力的值大小不同;地震作用下土筋間的動似摩擦系數是隨地震加速度的增加而減小;模型沿墻高方向的加速度響應等。接著,根據模型動力有限元時程分析結果和模型試驗數據的比較分析,得出由土體單元、接觸單元和筋材單元組合的塑料土工格柵加筋土非線性動力有限元分析模式的合理性。In the modal analysis, the similarity laws has been introduced to reduce the error during the assessment of the prototype building ' s natural frequency under the insufficient balance weight testing. by the author ' s theory, the prototype natural frequency can be the same even the balance weight of model is changeable
在模態分析方面,本文利用相似性原理,解決了模態試驗在配重不足時,求解原型結構自振頻率誤差過大的問題,並且得出了在不同配重條件下,試驗模型與原型結構的頻率可以達到一致的相似準數。Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled
( 2 )利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究,通過分析正弦荷載作用下的試驗資料,驗證了粉土的孔隙水壓力增長模式的合理性;從微分方程推導了基於土體振動臺模型試驗的相似律,並從模型實體、孔壓時程曲線和相似律等方面做出了分析,得出了如下結論:在小型振動臺試驗中,模型箱中的粉土都發生了液化,液化的時刻和輸入加速度幅值有關,而對頻率的變化不太敏感;粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化;孔壓的增長曲線形狀與施加的荷載有關:當施加荷載為由小到大的形式時,曲線形狀為上凹的曲線;當施加荷載為等幅的正弦荷載或荷載幅值由大到小時,曲線形狀為上凸的曲線,且逐漸趨于穩定。This paper is focused on dynamical properties of a frame pedestal model for a 1000mw steam turbine - generator set
對某電廠1000mw汽機框架式基礎的動力特性進行了模型試驗研究,並按照相似理論換算到原型結構並進行了分析。However, it is too expensive in investment, complex in experimental techniques, difficult and dangerous in performance. in this paper to overcome these drawbacks, the similarity relations together with a new method and its principle of experiment have been developed based on the model theory of structural similarity. according to this principle, the total stress ; an be obtained as a sum of the stresses due to weight and external loading, which based on only one model experiment without any gravitational loading
最後,針對外載與自重共同作用下,傳統光彈性分析法中採用離心力場模擬重力場獲得自重應力的試驗投資耗費大、技術復雜且難度大和不安全等嚴重缺點,按照結構相似的模型理論,本文提出模型外載與自重並存變動外載的光彈性分析法,導出處理這個問題具體的相似律和試驗原理及方法,進行了典型實驗驗證,指出僅用外載作用的模型試驗,即不用離心力場模擬重力場的模擬試驗,就可以獲得上述兩種載荷共同作用下的應力分析結果。Following the mechanics, loads as well as constrain of grab, we focus on the holder, study it with the similarity theory and modal experiment theory. with the guide of all theories, we design three modals of the grab holder. at the same time, we designed the experiment equipments according to the loads and constrains of wording conditions of grab
本文從實際的抓鬥出發,根據長撐桿抓鬥斗體在實際作業中的力學性能,載荷特點以及約束情況,選擇受力最為復雜、在實際運用中最容易損壞的抓鬥斗底板為研究對象,根據相似理論以及模型試驗的原理,分三種情況,建立簡化的抓鬥斗體模型。The data got from the shooting tests, conversed by the theory of similitude and eliminated the system errors, were compared with the data from the approval test in the national shooting field. it verified that the full parameters artillery physical simulation theory was right. it verified that the huge rate model design and madding methods were reliable
把模型炮實驗獲得的數據,按相似理論換算,並消除相似畸變帶來的試驗誤差后,與原型炮在國家靶場定型試驗的結果比較,證明了創建的火炮全參數物理模擬理論的正確性;證明所採取的大比例縮尺模型的設計方法和製造手段的可靠性;證明用縮尺的模型炮代替副炮進行多項目綜合物理模擬試驗技術是成功的。In addition, a method for evaluating the flow characteristics in multi - strand tundish, which can be applied to the similar water modeling study is introduced in this paper
本文還提出了多流連鑄中間包流動特性的評判方法,為類似的水力學模擬試驗提供了參考。Abstract : in light of thicker grain and smaller viscosity of debris flow, a segmented simulation of the debris flow with flume is presented. for the first time. more difficult resistance similarity is brought about by geometric rate without excessive coarsing and discontinuous similarity of sand grain composition in model is eliminated with different grain scale. on this basis the density similarity and sand conveying similarity are achived. the method presented is verified through a model test case
文摘:針對水石流顆粒粗,粘性小的特點,提出了利用水槽進行分段模擬水石流的設想,首次通過幾何變率解決難度較大的阻力相似問題,改變了以往過度加糙的方式;通過變粒徑比尺的方法消除了模型沙級配不連續相似的問題,較好地實現了固體物質級配相似,達到了泥石流的密度相似和輸沙相似.通過水槽概化模型試驗實例,對本方法進行了驗證Comprehensively discuss the issues in application, adaptive condition and performance, propose a fast arithmetic of forward modeling and depth migration in common shot gathers with one - way acoustic wave equation based on vrselrf, and verify the arithmetic by numerical simulation. concisely discuss the cause of the creation of evanescence and the problem of lateral amplitude discontinuity result from it. fourthly, use the reflectivity model, computed to describe the fracture model, with the formula of computation reflectivity based on elastic - acoustic approximation, and the wavelet model computed by the method, wavelet creation with fourier transform, we proposed, in conjunction with vrselrf wavefield extrapolation operator
第三,將頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元( vrselrf )應用於疊前與疊后正演模擬、疊前與疊后深度偏移,對演算法應用中應注意的問題、適用范圍、性能等作了較為全面的論述;提出了基於vrselrf的單程聲波方程共炮記錄正演模擬和深度偏移快速演算法,並通過數值模擬試驗對演算法進行了驗證;簡要地討論了倏逝波的產生原因及其帶來的橫向振幅不連續性問題。To have a further study of the new type soft subgrade reinforcing system of geocell reinforced gravel mattress and gravel pile composite foundation of its mechanism of load capacity and settlement development, three comparative model tests were designed and carried out under the direction of similarity theory and similarity criterions deduced through dimension analysis method
摘要為深入研究土工格室碎石墊層碎石樁復合地基這一新型多元復合地基加固體系的承載力和沉降變形機理,應用量綱分析法推導了土工格室碎石墊層碎石樁復合地基模型試驗的相似準則,根據相似理論設計和完成了3組具有可比性的模型試驗,獲得大量荷載沉降、樁土應力比和應力分佈數據。Abstract : taking the 1 500 auxiliary concrete structures roadway which has just a few multiple diploid strata as a research object, by terms of utilizing the 3d fem model, integrating the observation result and resemble simulacrum ending, comprehensive research on the inside of stress distortion and its mechanism are developed, an extraordinary fairly visual result is gained which has an important support in practical supporting design, reinforcement, enhancing the strata cohesion and intensity
文摘:以窯街三礦1500混凝土結構副大巷多層急傾斜煤巖層中復雜結構為研究對象,應用三維有限元模型,結合現場礦壓觀測結果和相似材料模擬試驗結果,對該巷道內部應力破壞敏感部位的內力和變形機理進行了系統的研究,得到了非常直觀的可視化計算結果,這對現場支護設計、維護加固和提高巖層的「凝聚力」具有重要的意義Based on the mode experment, we research the vibration property of the sonar dome with its fixing manner and find a manner for control under water self - noise near the sonar. because of the similitude between mode and real sonar dome, the result is useful for sonar design
本文在導流罩的相似縮比模型試驗的基礎上,討論不同安裝連接方式對導流罩振動特性的影響,探討通過改變導流罩的振動特性降低聲吶自噪聲的技術途徑.由於模型與實體存在相似關系,試驗分析結論對實際應用具有一定的指導意義Centrifuge model test technique preferably solves two problems : one is the gravity loss of the model soil, the other is the coupling problem between the seepage field of the ground water and the stress field of the stratum, which is a guidance for other deformation controls under the similar condition
離心模型試驗技術較好的解決了在地下工程研究中模型土體的自重損失和地層位移分析中地下水滲流場和地層應力場相互耦合作用問題,對于在相似條件下富水地層隧道開挖施工如何控制地表沉降變形的研究方面具有指導意義。Use the similitude theory the author calculated uncompress fluid flowing in the stationary diameter pipeline, carrying on dimensional analysis and similitude theory counts, designed long - huge highway tunnel ventilationg model, constructing build the highway tunnel ventilation simulated test terrace
利用相似理論對不可壓縮流體在水平等直徑管道中的定常流動進行量綱分析和相似理論計算,設計長大公路隧道通風模型,構建了長大公路隧道通風模擬試驗平臺。This experiment adopts the theory of similarity as theory foundation, adopts arq number as criteria of similarity, designs and makes physical model according that geometric scale is, selects experiment instrument and setting
標準機組段分層空調模型試驗以相似理論為理論基礎,採用熱量阿基米德數arq作為該試驗的相似準則。按照的幾何比例尺以及其他制約條件設計並製作其物理模型,同時完成測試儀器選配和測試輔助裝置的建立。分享友人