彈粘性場 的英文怎麼說
中文拼音 [dànniánxìngchǎng]
彈粘性場
英文
elasticoviscous field-
As to planar visco - elastic prediction of settlement, this paper fixes on range of the back - calculation parameters range, analyzes back - calculation parameters which are indispensably in the course of anti - analysis. since it is difficult to acquire the optimization result in simultaneous back - calculation, this paper puts forward a calculation method which combined with investigation data and field experiment data to minimize the parameters to get optimization
( 2 )針對二維粘彈性沉降預測,確定了模型反演參數的取值范圍,對于多層軟土地基變量同時反演很難獲得最優解的問題,提出結合工程勘察和現場實驗以減少參數的方法獲得最優解。In this way, corresponding to every single viscoelastic random medium model, we can calculate and gained 6 different wave field characteristic quantities
這樣,對應每一個粘彈性隨機介質模型,我們均可計算得到6個不同的波場特徵量。By means of the finite element inverse analysis, based on stress - strain theoretical equations of the elastoplasticity and viscoelasticity - viscoplasticity, the change of the valley - side margin stress distribution during original state, the condition of human cutting a terrace of building houses in the loess slope, and the condition of cutting the top of loess slope is elucidated
3 .基於粘彈?粘塑性理論的本構方程,運用有限元方法進行反演分析,闡明了宅基邊坡谷緣在天然條件、斬坡建窯條件下和削坡條件下的應力場變化特點。結果表明,谷緣在斬坡建窯條件下拉張應力和剪切應力增大是導致崩塌產生的根本原因。According to elasto - plasticity theory, with the help of finite - method program ansys, the paper undertakes the computer analogue tests about the bearing capacity of pile tip arranged by orthogonal principle, and attains the relations of pile - tip bearing capacity to embedment depth, pile diameter, cohesion, internal friction angle and modulus of deformation. by the means of mathematical statistic, regression equation of the ultimate bearing capacity calculated by finite element method is gained through the regression analysis of 81 group data from the computer analogue tests. by comparison and analysis of the values calculated by finite - element regression equation and the values of in situ loading test, the regression equation is gained which calculates the size effect for base resistance of large diameter pile
根據彈塑性理論,運用大型有限元軟體ansys按正交設計理論對樁端承載力進行模擬計算,獲得樁端承載力與樁長(埋置深度) 、樁徑、粘聚力、內摩擦角及變形模量等主要影響因素的關系,並採用數理統計方法,對81組ansys模擬試驗結果數據進行回歸分析,得到有限元法確定樁端極限承載力的回歸公式,並將有限元法回歸公式計算值與現場小壓板載荷試驗值進行比較分析,得到大直徑樁端阻的尺寸效應系數計算公式。A new type of viscoelastic stochastic finite element method is established using first - order perturbation theory based on local averaging method of random field and karhunen - loeve expansion theory of random process. the amount of computations is greatly reduced by transforming correlated random variables to a set of uncorrelated random variables. the relations of different random response variables are analyzed and monte carlo simulations for viscoelastic stochastic structures are investigated
基於隨機場的局部平均法以及隨機過程的karhunen - loeve分解理論,通過一階隨機攝動方法建立了考慮材料近似不可壓縮的粘彈性隨機有限元公式,由相關結構分解減少計算量,分析了各結構隨機響應量之間的關系,給出了數字特徵的計算方法,研究了粘彈性隨機結構的montecarlo模擬驗證方法。( 2 ) on the basis of continuity equation, momentum conservation equation, energy conservation equation, and substantial equation, coupled thm governing equations are derivated with giving up the assumption of local thermal equilibrium, adopting thermal elasto - plastic constitutive relation, taking the effect of temperature gradient on groundwater seepage ( analogous to soret diffusion ) and the effect of viscous dissipation of groundwater on temperature field of rock mass into account
( 2 )根據連續性方程、線動量平衡方程和能量守恆方程以及相應的物性方程推導了飽和巖體溫度場-滲流場-變形場三場耦合作用控制方程組。在推導控制方程組時舍棄了「局部熱平衡」假設,採用了熱彈塑性本構關系,考慮了溫度梯度對地下水滲流的影響(類soret效應)以及地下水的粘性耗散對巖體溫度場的影響。The results indicate that the seismic responses of pier under the viscous - spring boundary are less than that under the fixed boundary, and the seismic responses of pier on the site with the frozen layer are much less than that without the frozen layer
結果表明類場地上的挖井基礎橋墩,來用粘彈性邊界時的橋墩地震反應比固定邊界時的地震反應小;凍土時的地震反應比融土時的地震反應明顯減小。Microdeformation mechanism of structural clays and elasto - viscoplastic damage model abstract on the basis of the investigation of the structure of natural sedimentation clays and the simulation of the deformation and rheology of soil particle skeleton under the internal molecule attractive force and electric charge repulsion and the exterior load, a elasto - viscoplastic damage model is constructed in which the soil structure is considered to be gradually damaged in the course of loading, and the effectiveness of the model is verified by the results of laboratory tests and field tests
本文調查了天然粘土中存在的結構性,應用大變形有限元法模擬了土顆粒骨架在內部分子吸力和電荷斥力以及外部荷載作用下的變形和蠕變機理,在此基礎上建立了考慮天然粘土變形過程中結構性不斷受損的彈粘塑損傷模型,並進行了室內和現場試驗,論證了模型的有效性。To study the wave field characteristics of 2 - d viscoelastic random medium, we divide up the theoretic recording sections ( vertical component ) into two different time sectors, and separately calculated and extracted the three statistical characteristics ( horizontal center frequency, vertical center frequency and relative magnitude of the wave field energy ) in the two different time sectors
為研究粘彈性隨機介質模型中的波場特徵,我們在理論記錄(垂直分量)剖面上選取兩個時間區段;在這兩個不同的時間區段上,分別計算剖面的三個統計特徵(橫向中心頻率、縱向中心頻率、波場能量相對值) 。Applications of higher - order upwind scheme for viscous flow of projectiles
高精度迎風格式的射彈粘性繞流場數值模擬Researching on the technology if reverse order is to study strains if pits, structural systems if basement, environmental surwey and underpinnings. on account of emphasizing developing methods if checking strength if pick - ets, modemizing machenes of excavation and studying methods of underpinning is put forward and is a way if controlling the quality of pickets in sites, which leads an active effect ; synthetic application if rankintheory, spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward and the time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found ; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it. duringh the temporary survey and the environmental warship, bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration ; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed
鑒于國內外的研究把重點放在大力發展工程樁的實驗室承載力監測方法與設備、如何使土方開挖機械現代化及對周圍建築的臨測方法上,本文提出了現場利用聲波層析成像技術監測鋼砼樁內部質量的方法與程序,並得出了聲波層析成像技術是砼樁的動態質量檢測的有效手段,這對指導施有積極、現實意義;提出了綜合運用朗肯土壓力理論、基坑空間和時間效應影響理論來分析逆作法施工過程中基坑邊坡土體應力及應變的變化情況,指出粘土地區也應考慮時間效應,並且進一步分析了基坑邊坡土體的塑性區形成和發展,找出邊坡最不利的區域,以確定地下室土體的挖掘的方式和順序,指出憑主觀臆斷與經驗來施工是不可取的;在分析、經較逆作法與大開挖順作法的地下室結構體系受力情況及施工順序的不同,提出了節點處理技術;分析了逆作法施工期間樁的沉降變化原因及由此而產生的差異,並探討了解決的方法;本文還提出了環境振動對土體邊坡穩定產生影響的觀點,並分析了在環境振動影響下,土體的應力狀態及土休失穩破壞概率,並且還運用彈性力學知識和數學分析的方法定量地分析了地下混凝土墻受力狀態,指出了被監測墻體的最大應力、應變位置。By using vector random field model and second - order perturbation method, viscoelastic stochastic finite element formulation is developed, which can take the correlation of random parameters into account and is suitable for stochastic structural analysis with larger variance of the uncertainties
利用向量隨機場模型和二階隨機攝動方法,給出了相應的粘彈性隨機有限元列式。能夠考慮參數的相關性,更加接近於prony級數的參數測試過程。Taken the viscosity into account in this paper, a rather simple but practicable elastic - viscoplastic model to describe the stress - strain relation of the material at the crack - tip of antiplane mode iii crack
本文在考慮擴展裂紋尖端材料的粘性效應下,採用一種比較簡單然而實用的彈粘塑性模型來描述反平面型動態擴展裂紋尖端場附近材料的應力應變關系。The process and mechanisms of slipping, exfoliation to layered graphite and compounding with polypropylene ( pp ) on nano - scale were systemically studied. the effects of shearing force field offered by pan - milling and confined environment of the exfoliated graphite on the microstructure of polypropylene, the electrical and thermal conductivities of the nanocomposites were also investigated. based on the experimental results, a modified electrical conductive model as well as thermal conductive model for polymer - based composites was proposed
利用層狀無機物(如石墨)的弱層間結構和聚合物的粘彈性特點,在磨盤碾磨剪切力場作用下,通過摩擦和拉伸形變錯位、擠壓嵌合、拉伸滑移、剪切剝離與粉碎和混合分散等過程,實現層狀無機物層間剝離和與聚合物的納米復合。The classic exchange rate determination theory includes the theory of purchasing power parity and the theory of interest - rate parity. as the main part of modern exchange rate determination theory, the capital market method of exchange rate determination theory includes the currency model which includes elastic price model and viscous price model, the currency substitution model and the portfolio model. the contemporary exchange rate determination theory includes the speculation foam theory, the news model and the chaotic model
經典匯率決定理論主要是指購買力平價理論和利率平價理論;現代匯率決定理論主要是指匯率決定理論的資產市場方法,包括:貨幣模型、貨幣替代模型和資產組合模型,其中貨幣模型可以分為彈性價格模型和粘性價格模型;當代匯率決定理論主要包括:投機泡沫理論、新聞模型和混沌分析方法。A visco - elastic - plastic analysis method for stress field of massive concrete structures
大體積混凝土結構應力場的粘彈塑性分析方法However, when the actuator, which is made of piezoelectric ceramics, is bonded on a structure, it may influence some of the specimen ' s physical parameters, such as elastic modual. so the induced strain field is influenced. and the extent to which the parameters are influenced depends on the size of the actuator
然而,壓電陶瓷驅動器粘貼于試件表面時,會對試件的彈性模量等物理參數有所影響,進而影響到整個誘發應變場,隨著壓電陶瓷驅動器尺寸的變化,影響的程度也跟著變化;而且為了達到良好的控制效果,往往需要在不同的位置粘貼多片壓電片,這些問題都使得掌握粘貼型壓電驅動器的誘發應變場的位移圖及其尺寸變化對誘發應變場的影響成為必要。Compared with the experiment data, the temperature field and the thermal stress field are discussed. the spacing, the time of sealing and the plane form of the later joint - filled slots are discussed especially, and it is found that the spacing, the time of sealing and the plane form of the later joint - filled slots are comprehensive indexes which are relevant to material, design and construction. the theory value of the spacing and the time sealing of the later joint - filled slots and some proposals on the plane form are presented on the basis of numerical calculation
本文在綜合前輩的研究成果的基礎上,推導了粘彈性場的三維有限元解,對比實際工程實驗數據,對大體積混凝土結構內部的溫度場和應力場進行了分項研究,重點討論了后澆帶的留置間距、封閉時間和平面形狀,發現其留置間距、封閉時間和平面形狀都是綜合指標,是和材料、設計、施工有關的。According to the prior achievements, based on pile deformation test data, it puts forward a method that combined the mindlin ' s solution with boussinesq ' s solution to calculate the superimposed stress of djm composite ground, and then uses the superimposed stress to calculate the settlement by layer - wise summation method. by a nonlinear elastic and viscoelastic fem model, based on in - site test data, the back - analysis method of the direct optimal multiple parameters are adopted to calculate the road embankment settlement of typical project
在前人的基礎上,結合樁身應變測試結果,提出了聯合mindlin解和boussinesq解求解攪拌樁復合地基的附加應力的方法,根據計算出來的附加應力再用分層總和法計算攪拌樁復合地基的沉降;採用非線性和粘彈性有限元模型,根據現場實測資料,運用直接優化多參數反演分析方法,對典型工程實例進行了沉降計算對比分析。To characteristic of dam construction period, viscoelastic finite model of dam and foundation rock mass during construction period is analysis. based on field theory, method of founding dam safety monitoring tune - spatial distribution model during construction period is discussed, including statistic time - spatial distribution model, deterministic time - spatial distribution model and hybrid time - spatial distribution model. furthermore, neural network model, which has better nonlinear mapping capability, is studied and founded
( 3 )針對大壩施工期的特點,研究了壩體和基巖施工期粘彈性有限元分析模型;基於場論理論,探討了建立施工期大壩安全監控時空分佈模型(統計時空分佈模型、確定性時空分佈模型和混合時空分佈模型)的方法;同時,研究並建立了具有較強非線性映射能力的神經網路模型。分享友人