粘彈體 的英文怎麼說

中文拼音 [niándàn]
粘彈體 英文
viscoelastic body
  • : 粘動詞(粘附) glue; stick; paste; adhere to; bond
  • : 彈名詞1. (彈子; 小球形的東西) ball; pellet 2. (內裝爆炸物, 具有破壞和殺傷能力的東西) bullet; bomb
  • : 體構詞成分。
  1. The scielltific computational theories and methods on bird strike to the windshield of aircraft have been systematically studied and summed up in this thesis, such as fem comptltational principles and procedures to elastic dynamic problems under the conditions of small and non - linear finite deformation, 3d viscous elastic constitutive theory and incremelltal expression under the consideration of the rate effect of non - metallic materials like the aircraft windshield, and the numerical compatational principles and key constitutions for impact - contact dynamic subjects

    2 、系統學習並歸納總結了鳥撞擊風擋結構問題中的科學計算理論與計算方法。按照鳥撞問題數值計算方法逐步深入的思路,系統總結了小變形結構動力學有限元數值計算方法、有限變形的幾何非線性有限元數值計算方法、非線性形變的本構物理關系;對于實施復雜結構有限元動力學計算的載荷增量方法提出了對newmark差分的改進以及進行材料與幾何非線性數值計算的細致步驟。
  2. Dynamic behavior of viscoelastic cylinder in axial flow

    軸向流動中性圓柱的動力特性分析
  3. The time - related expression of stain along the crack - tip extension line was given from the use of the elastic - viscoelastic correspondence principle and standard linearity body model and the non - linear factors, which caused the gradual difference between the theoretical and actual value with the increase of time, were analyzed

    應用廣義性?性對應原理,給出了線裂尖延長線應變值隨時間變化的表達式,分析導致理論與實驗情況隨時間增加產生偏差的非線性因素。
  4. At the same time we study, analysis and discuss the action that non - linearity - stickiness - springiness and crazing damage of the pmma sample under creep though making us of the knowledge about the high molecule physics the damage theory of material of rheology of bodies with defects. through the study and theory analysis of single - axes stretching experiment in pmma sample under creep, take the surface crazing damage density of pmma sample as an variable, to look for a commonly rule that the crazing damage of pmma, and to offer a feasible damage model for the sake of study that of pmma ' s remoteness damage

    同時運用高分子物理、含缺陷流變性物的材料破壞理論等知識,對無孔洞pmma試件和有孔洞pmma試件蠕變條件下非線性性行為及其銀紋損傷現象進行了研究、分析與探討,通過對蠕變條件下的pmma試件的單軸拉伸實驗研究和理論分析,以pmma試件的銀紋損傷面密度值為損傷變量,來嘗試尋求pmma銀紋損傷的一般規律,為研究pmma的細觀損傷提供了一種可行的損傷模型。
  5. The main content of this article includes : " ( l ) the planar non - linear and viscid - elastic static mechanical analysis is used to analyze and calculate the md in service. ( 2 ) the planar nonlinear static mechanical analysis of the stress and deformation is used to analyze the med in banking, which is banked to the height of 140m

    主要研究工作有: ( 1 )茅坪溪防護大壩完建和蓄水時的應力和變形的分析計算:對完建和蓄水時壩的應力和變形進行平面非線性靜力分析計算和平面性靜力分析計算,對分析計算結果作出結論。
  6. Because the propellant grain is viscoelastic material, the liner and adiabatic layer are also viscoelastic one, the interface debond problem is actually interface crack about elastic - viscoelastic or bi - viscoelastic materials. research about this problem relates to the knowledge of viscoelastic mechanics and interface fracture and combustion. numerical analysis method about interface debond on solid rocket motor is researched in this paper

    由於固火箭發動機的推進劑藥柱是一種性材料,襯層和絕熱層也具有性性質,因此其界面脫問題實際上是性-性或雙性各向同性材料界面裂紋問題,對該問題的研究涉及到性力學、界面斷裂力學和燃燒學等相關學科。
  7. So we say that we can absolutely avoid unnecessary and bothering process in mathematic deducibility if making full use of the method of pseudo - spectral in more complex viscoelastic media, we can get wave equation when directly replacing with two kinds of relaxation modules

    由此可以說,如果採用偽譜法模擬其它更復雜的介質模型時,完全可以避免不必要的而且煩雜的數學推導過程;直接將積鬆弛模量和剪切鬆弛模量代入即可得其波動方程。
  8. 4. with visco - elastic boundary of soil considered, the eigenvalue equation in frequency domain of soil dynamic equilibrium equation falls into a complex transcendental equation. in course of seeking its solution, based on argument principle and contour integral, with the aid of matlab, two numerical algorithm combined with the corresponding procedures for solving transcendental equations in a complex plane is developed by the author

    4 、由於考慮了土性支承邊界條件,使得其動力平衡方程在頻域內的固有值方程為一復數超越方程,為了求解該方程,筆者基於幅角原理和閉合曲線積分,結合matlab ,提出了復平面上超越方程的兩種數值解法,並編制了相應的程序。
  9. The main purpose of this paper is to study crack growth rate of a class of nonlinear viscoelastic materials under the condition of constant load and small - strain. in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program, facilities involved in the nonlinear viscoelastic crack tests are relatively few, the test process is relatively simple and the data obtained from the experiments are credible. on this basic, the calculation of j integral of nonlinear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonlinear viscoelasticity are derived

    成果包括: 1 、證實了雙懸臂梁試件用於非線性性裂紋擴展實驗研究的優點:雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長,在計算j積分時,計算方法簡單; 2 、得到了改性聚丙烯材料用於非線性性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸;採用不斷改善夾具的方法使得加載穩定; 3 、經過連續四個多月的時間得到了一組有用的實驗數據; 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。
  10. In the present, the models used widely are two kinds : the continuous model. the continuous model is supported by " smearing out " the discrete support along the track. giving a continuous viscoelastic foundation and a continuous layer represent sleepers

    目前所使用的計算模型主要分為兩種:一種為連續型模型:將沿軌道方向的離散支撐連續化,將枕木模擬為剛或為有均布質量和剛度的梁,使枕木成為性地基上的連續層。
  11. The idea of passive control is to utilize additional facility within a structure to dissipate or absorb a large portion of the seismic energy, which has been applied to practical engineering extensively since its control devices - dampers are convenient and it does not need large energy supply and the structural system identification. now the main devices which have been developed in the passive control may be grouped into the following types : viscous, visco - elastic, metallic and frictional, and tuned mass damper ( tmd ) and tuned liquid damper ( tld )

    被動控制通過附加阻尼裝置耗散或吸收大部分的地震動能量以達到減振的目的,由於其控制裝置簡單,不需要外界能源輸入和系統識別,容易在工程上實現並已得到廣泛的應用;目前被應用於結構被動控制的阻尼器主要有:滯型、型、摩擦型、調諧質量阻尼器( tmd )和調諧液阻尼器( tld ) 。
  12. The pile is assumed to be vertical, elastic and of variable impedance, and the soil is layered and with viscous damping

    假定樁為豎直性變阻抗,土為成層線性,其材料阻尼為性阻尼。
  13. The pile is assumed to be vertical, elastic and of uniform cross - section, and the soil is regarded as a linear visco - elastic layer with hysteretic damping

    假定樁為豎直性等截面,土為線性,其材料阻尼為滯回阻尼。
  14. According to the practical geological model of slope, by means of the finite element analysis, from the constitutive equations of the elastoplasticity and the viscoelasticity - viscoplasticity, the process and mechanism for progressive failure of the locked segment of rockmass are quantitatively revealed and simulated during the rupture, deformation, destruction, and failure of highsteep slope rockmass, and the dynamics driving the motion of rocky landslide with violent starting velocity by high pressure water flow is dealed with

    根據邊坡實際地質模型,基於塑性與-塑性理論的本構方程,通過有限元模擬分析,定量地揭示和模擬再現了高邊坡巖破裂、變形、破壞及失穩前後鎖固段巖漸進性破壞的機制和過程,探討了高壓水流作用下滑坡啟程劇動的破壞機理。
  15. One of these methods, passive control using viscoelastic or viscous dampers, has been applied to more and more projects in the past, because they can reduce the seismic response effectively, economically and rarely need to be repaired after they are installed

    其中利用性和滯流阻尼器對結構進行被動控制的方法,由於其有效性、經濟性和安裝后不再需要維護,而被越來越多的結構設計所採用。
  16. The camber development mechanism and the influence factors were researched by geometry analysis, viscous analysis and sintering kinetics analysis. the camber model was established and the equation for calculating curvature of camber was proposed. the influence factors for camber involve the original size of composite, the sintering properties and the shrinkage mismatch between the two materials

    從幾何學、性力學和燒結動力學的不同角度出發,探討了共燒翹曲形成機制和影響因素,建立了介電材料鐵氧材料疊層共燒翹曲模型和翹曲曲率方程,揭示影響翹曲的因素為形狀尺寸因子,材料的燒結特性和異種材料之間的收縮率差,其中燒結過程的收縮率差是翹曲產生的根本因素,收縮率差越大,則翹曲曲率越大。
  17. It proves the method could effectively model the sprea of seismic wave in the linear viscoelastic solid by what we theoretically analyze

    實際計算結果表明該方法能有效模擬標準線性粘彈體中地震波的傳播。
  18. Study of types of polymers ; fundamentals of viscoelastic phenomena such as creep, stress relaxation, stress rupture, mechanical damping, impact ; effects of chemical composition and structure on viscoelastic and strength properties ; methods of mechanical property evaluation

    研究聚合物的類型;基本的現象比如蠕變、應力松馳、應力斷裂、機械阻尼、沖擊;化學組成和結構對粘彈體和力性能的影響;力學性質的測定。
  19. Analysis of nonlinear viscoelastic melt flow in plate die by half analytical finite element method

    半解析有限元法分析非線性粘彈體在板材模具中的流動
  20. The article is based on the integal equation, we get the wave equation based on the standard linear viscoelasic solid with the corresponding theory and used the pseudospectral forward data modeling in the wave field

    摘要以積分本構方程為基礎,應用對應原理建立線性粘彈體中的波動方程,採用偽譜法進行數值模擬。
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