彈粘計 的英文怎麼說
中文拼音 [dànniánjì]
彈粘計
英文
elasto viscometer-
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體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、粘彈性體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。Abstract : based on destructible feature of plastically drawing unsteadiness of pressure vessel, this paper calculated elastical / viscoplastical drawing unsteadiness of pressure vessel made of revolving shells
文摘:依據壓力容器拉伸塑性失穩破壞特徵，計算了旋轉薄壁殼壓力容器在彈粘塑性材料下的塑性失穩破壞。A rate - dependent damage evolution modified zwt nonlinear constitutive ralation is adopted, an object function of least square was established according to the experimental results. the searching space of each decision variable was foreordained with conventional optimizing method, and all parameters in zwt model for solidified pf resin were determined with generic algorithms
基於實驗曲線構建了最小二乘形式的目標函數，並採用傳統優化方法輔助設計了各個決策變量的搜索空間，進而用遺傳演算法確定了損傷型zwt非線性粘彈性本構關系中的材料參數。Features and trend of spandex elastic fabric and the design of beautiful stretch face fabric with various nylon / spandex air - textured yarn, spun rayon yarn and fancy silver yarn are introduced with technical key points in weaving process analyged in detail in this paper
摘要介紹氨綸彈力面料的風格特徵和流行趨勢，闡述用錦氨空變彈力絲、粘膠短纖紗以及花色銀絲等多種元素設計絢麗彈力面料的過程，並重點分析織造過程的技術關鍵。Computation of transonic viscous flow of a projectile
彈丸跨聲速粘性繞流數值計算This paper demonstrates ultimate stress increment of unbonded tendons can be composed of approximate elastic deformation along the elements and local plastic deformation by nonlinear analysis on the unbonded partially prestressed concrete continuous structures. referring to the rule of ultimate stress increment of unbonded tendons at every load case, a regression formula of ultimate stress increment of unbonded tendons based on elastic - perfectly plastic model has been presented for engineers to calculate ultimate stresses of unbonded tendons in prestressed concrete multi - span continuous structures
考慮在各種荷載工況作用下無粘結筋極限應力增量的變化規律，並與理想的彈塑性模型相比較，最終得出以理想彈塑性模型計算各種荷載工況作用下無粘結筋極限應力增量的回歸公式，從而為預應力混凝土多跨連續結構的無粘結筋應力設計計算提供有益的參考。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：對完建和蓄水時壩體的應力和變形進行平面非線性靜力分析計算和平面粘彈性靜力分析計算，對分析計算結果作出結論。Aimed at this property hi which the effect of visco - elastic parameters appeared in late period, this paper proposes that parameters are not adopted as basic ones to predict settlement unless this computed parameters are similar in the course of back - calculation
針對粘彈性參數對沉降的影響在固結後期才能明顯表現，提出通過對不同時間段觀測信息反演獲得的計算參數基本一致時，才可作為沉降預測的基本參數。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。To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high - position transfer story structures. first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived. then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo - dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete. seismic behaviors are analyzed, including inter - story displacement, base shear - displacement skeleton curves, and equivalent viscosity - damping curves. a program is programmed to carry out the elasto - plastic dynamic analysis, and displacement time - history curves of the two models are derived. the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors. it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures. finally, some design suggestions are put forward, which can be referenced by similar engineering
為滿足建築物大空間和靈活隔斷要求，在高位轉換層結構中採用迭層空腹桁架結構.首先分析了其受力性能，得出了空腹桁架各構件合理的截面剛度以及布局形式.然後結合一實際工程，進行了兩榀迭層空腹桁架轉換結構模型（ 1 : 8相似比）的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架，另一榀配置了預應力和鋼骨混凝土，對比分析了兩模型的層間位移比、骨架曲線以及等效粘質阻力系數等抗震性能的比較，並進行了彈塑性動力分析.試驗和分析結果表明，配置預應力和型鋼混凝土的迭層空腹桁架轉換結構具有良好的抗震性能，可以成功地解決迭層空腹桁架作為轉換層結構所產生的弊端問題，最後對這類轉換層結構提出了相應的設計建議The results of test and theoretical calculation indicate that the friction device does not slide under minute earthquake, thus the control effort of f - ved corresponds with ved, and the action of frd is the same as pure brace. when disastrous earthquake occurs, the viscoelastic material reaches its shear limits and the friction device begins to slide, so the control effort of f - ved is the best
試驗結果和理論計算結果表明，在多遇地震下摩擦機構不起滑，粘彈性-摩擦阻尼器的減振效果和純粘彈性阻尼器相當，而摩擦阻尼器的作用相當于純支撐；在罕遇地震下粘彈性材料達到剪切極限，摩擦機構起滑，故粘彈性-摩擦阻尼器的減振效果最好。The result indicates that the nonlinear elastic model is appropriate for better foundation condition, while the viscoelastic model is appropriate for worse foundation condition. according to the uniqueness of back analysis solution, it is put forward a method for the back analysis of layer - wise and section - wise iteratively. which is showed advantage by the calculation result
分析表明，非線性彈性模型一般適合地基較好的情況，而對于地基較差的情況宜採用粘彈性模型；針對反演計算解的唯一性問題，提出了分層分部反演迭代的計算方法，計算表明，該方法具有一定的優越性。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
具體成果包括： 1 、證實了雙懸臂梁試件用於非線性粘彈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粘彈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。After analysis of the parameters of the devices, a conclusion is achieved that we can directly use the parameters of the dampers instead of devices to design the buildings in the common situation. then a one - freedom modal is used to compare the differences of performance between these two dampers under harmonic load. finally, three buildings, which are installed with viscoelastic dampers, viscous dampers and no dampers respectively, are analyzed using finite element method, time history method and response spectrum method, and the result is the same as that of harmonic analysis
如果支撐剛度較小，應採用本文推倒的公式計算阻尼裝置的性能參數；利用單質點模型進行阻尼結構在簡諧荷載作用下的性能分析，並比較了粘彈性與粘滯阻尼結構在振動控制方面的性能差異；最後利用數值方法分別對未安裝阻尼裝置結構，安裝了粘彈和粘滯阻尼裝置的三種結構進行了反應譜和時程分析，得到了與理論分析一致的結果。This paper presents the displacement solution to mine elevator viscoelastic vibrating equations and the kinetic tension calculation method, discusses kinetic tension characteristics under rectangular, ladder shaped, sinusoidal and parabolic acceleration curves, provides ways to limit or even avoid lifting rope viscoelastic vibration
摘要給出了礦井提升機粘彈性振動方程的位移解及動張力的計算方法，研究了採用矩形、梯形、正弦形、拋物線形加速度時銅線繩的動張力特性，給出了限制和消除提升鋼絲繩粘彈性振動的方法。In order to develop and consummate the analysis theory and calculation method of base - isolated structures, based on the research on restoring force model of isolation systems and the analysis on the nonlinear seismic response of base - isolated structures, the analysis on multi - dimensional and lateral - torsional coupled seismic response of base - isolated structures is developed in this paper. according to the mechanical performance of isolation systems, detailed analysis and improvement of the present research, an unilateral and a bilateral coupled visco - elastic hysteretic model for rubber bearings, an unilateral and a bilateral coupled visco - elasto - plastic differential hysteretic model for lead rubber bearings, an unilateral and a bilateral coupled modified visco - plastic differential hysteretic model for sliding friction bearings are proposed
為進一步發展和完善基礎隔震結構分析理論和計算方法，本文以隔震系統恢復力模型研究及基礎隔震結構非線性地震反應分析為基礎，對基礎隔震結構的多維地震反應及平?扭耦聯地震反應開展了以下幾方面的研究工作：根據隔震系統力學性能的特點，在現有研究成果的基礎上，對隔震系統恢復力計算模型進行了改進和創新，提出了普通疊層橡膠支座單向及雙向耦合粘彈性恢復力計算模型，鉛芯疊層橡膠支座單向及雙向耦合粘彈塑性微分型恢復力計算模型，摩擦滑動支座單向及雙向耦合修正粘塑性微分型恢復力計算模型。Performance for a piezoresistive transducer pressure sensor to thermal and pressure environments can be predicted by finite element method. a simplified 1 / 8 model, considering silicon dioxide and nitride process as well as stack anodic bonding and adhesive bonding processes, was developed. the fem results were found to be comparable to experimental data. case studies suggested that pyrex stack induces certain amount of non - linearity, while it isolates hard epoxy nonlinear effect. flexible epoxy bonding or soft adhesive bonding is preferred to the packaging process. the viscoelasticity and viscoplasticity of bonding material will result in hysteresis and drift errors to sensor output. however, soft adhesive s influence on sensor can be ignored under relative stable environments. more over, detailed design and process information will help to improve modeling application
熱、壓環境下壓阻變換壓力傳感器的性能可以通過有限元方法預測.這里研究了簡化的1 / 8模型，模型考慮了二氧化硅和氮化硅生成過程及堆陽極鍵合和膠粘結合過程.結果發現有限元預測結果和實驗數據具有可比性.範例研究表明，硼硅堆導致產生一定的非線性，但它隔離了硬環氧樹脂的非線性.在包裝過程中最好使用柔性環氧黏合或軟黏膠性結合.黏合材料的黏彈性和黏塑性將會導致傳感器輸出的滯后和漂移誤差.然而，在相對穩定的環境下，軟黏合劑對傳感器的影響可以忽略.此外，詳細的設計和過程信息有助於提高模型的適用性In fact, the adherence of young and old concrete belongs to the adherence research work of bimaterial. the simulation calculation shows that in the range of criterion provision of young and old concrete that the formula for calculating the splitting tensile strength of a monolithic concrete specimen can be used to a concrete specimen of young and old concrete when the difference of elastic modulus of young and old concrete is small
新老混凝土的粘結實際是彈性模量不同的兩種材料? ?即雙材料的結合問題。本文通過數值模擬計算結果表明，在規范規定的修補結構新老混凝土強度等級差值范圍內，新老混凝土彈性模量相差不大的情況下，新老混凝土粘結劈拉強度可近似採用整體混凝土劈拉強度計算公式。Using least squar method, the parameters of the new model can be ascertained, by calculating an engineering using fem programme, an encouraging phenomenon appeared that the calculating result is more close to the spot value than other models are, so it is clear that the new model is good for applying, worthing for more extensive use
本文在粘彈、粘塑性本構模型辨識的基礎上，結合實驗室流變資料，建立新的本構模型，採用最小二乘法進行參數擬合。通過有限元對某工程進行計算，結果顯示，採用新建模型計算與實測值較吻合，說明模型合理，值得推廣。It ' s shown that the simulation results with viscoelastic - viscoplastic - damage model are closer to the in - situ measured data, so both damage and creep of soft soil must be considered in engineering analysis
結果表明，用粘彈粘塑性損傷模型計算的結果與實測值比較接近，說明在工程分析中同時考慮軟土流變和損傷是必要的。分享友人