軸索變性 的英文怎麼說
中文拼音 [zhóusuǒbiànxìng]
軸索變性
英文
axonal degeneration-
In the former, two computing modes of fem are built, aimed at the coupling of variable - profile pylon, curved - axis arch and flexible cable. the software algor feas is used to get the results of dynamic numerical analysis, such as natural vibration frequency, vibration mode, dynamic displacement, dynamic stress, which are compared with the results of shaking table test research to draw to important conclusions. these conclusions provide not only potent basis for the design and construction of nanjing century tower, but also reference for other pylon - cable - arch structures similar to the project
在動態數值分析中，針對世紀塔變截面的塔身，曲線軸線的拱以及柔性拉索相互耦合時清況，建立兩種有限元計算模式，利用有限元軟體algorfeas得到動力數值分析的結果，如：自振頻率、振型、動位移、動應力等等，再和振動臺試驗研究成果作比較，得到一些重要的結論，從而為南京世紀塔工程的設計和施工提供強有力的依據，而且為類以於世紀塔工程的其它塔-索-拱結構的設計也提供一定的參考。These geometric nonlinear behaviors such as the sag of inclined cables caused by their own dead weight, the interaction of large bending moment and axial forces in girders and towers, and the large displacement effects are considered during calculation. newton - raphson method and the displacement convergence norm are used to approach the solution iteratively
計算過程中計及了拉索的垂度效應，彎矩和軸力對主梁和主塔的組合效應以及結構的大變形效應等幾何非線性影響因素，採用newton - raphson方法和位移收斂準則進行迭代求解。A detailed model of non - linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non - linearity are considered, is proposed in this paper. based on several numeric examples investigated by the galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived
本文創新地提出了斜拉橋拉索-橋面耦合參數振動模型，推導了索-橋耦合非線性參數振動方程組，聯合galerkin法及數值積分方法，對各種特性的拉索進行了數值求解，得出了影響拉索參數振動的各種因素；提出了斜拉索受軸向端激勵參數振動模型，導出了模型的非線性振動方程，使用諧波平衡法得出了產生參數振動需要的最小激勵幅值、共振時瞬態及穩態的振動幅值及索拉力的變化特性，並用數值積分方法對實際斜拉橋拉索進行了計算，分析了拉索阻尼對參數振動的影響。With the data recorded by computer, the author studies the experiment progress in detail, which includes the development of pore press, strain, strength of the sand, etc. connecting the development of these phenomena with the development of stress path, the author finds new mechanism which can explain the phenomena in the experiment. what is more, according to the dynamic test of the sand, there appears a steady state at the last phase of the development of strain and stress path, in which the strength of the sand is studied because it is an important parameter in evaluating the stability of sand against liquefaction. secondly, the dynamic constitutive relation was studied through the dynamic tri - axial test
本文首先採用目前國內較先進的微機控制動三軸儀，利用其可以適時採集和儲存數據的優勢，對砂土的實驗過程進行了細致的分析，研究該過程中孔隙水壓力發展、軸向應變發展以及它們與應力路徑之間的關系，對飽和砂土的剪脹、剪縮和卸載體縮等多個方面進行了研究，探索了砂土的動力特性，分析了影響砂土抗剪強度的各種因素，這些因素既包括土本身的特性（土的密度、結構、級配、透水性以及初始狀態等） ，又包括動荷載的特徵（振動力幅值大小和振動頻率等） 。Changes of hippocampus somatostatin - containing neurons after diffuse axonal injury
彌漫性軸索損傷后海馬生長抑素樣神經元的變化The thesis analyze a on - the - spot test model combining a projiect. utilizing the non - linear finite element theory in the article, form - finding has been took apart with node balanced laws and propping up move law. under the loads every calbe unit strength of axle and node displacement ' s variation tendencies are computed
論文還結合工程實踐對一現場試驗模型進行了分析。文中利用非線性有限元理論，按節點平衡法與支座移動法進行找形分析。計算了外荷載作用下各索單元軸力及節點位移的變化趨勢。With consideration of variety of magnetic circuit in permanent magnet bearings, a new mathematical model dynamic magnetic circuit is presented, which has been widely used in the design of lifting permanent magnetic crane
考慮到永磁軸承工作時磁路的變化，探索性地提出採用常用於起重永磁吊設計的動態磁路法來分析永磁軸承的力學特性，並給出了相應的數學模型。It was shown that the measured active soil pressures were smaller than the theoretical values and diminished with time, the measured pore water pressure decreased with the time and increased with the depth of soil, the combinative effects of cap girder and supporting structure were obvious which diminished the displacement of foundation pits, and the measured axial force of the anchor and interior steel beam were far less than the design force, indicating that the design safety factor of the foundation pit was too large to be economical
基坑工程實行信息化施工並獲得了豐富的監測數據，通過對數據分析結果表明：實測主動土壓力小於計算主動土壓力，實測主動土壓力隨時間延長變小：土體中孔隙水壓力隨時間增長而減小，孔隙水壓力隨深度增加而呈非線性增加；基坑冠梁協同作用明顯，冠梁減小了基坑變形；錨索軸力比較穩定，鋼撐軸力變化相對較大，且二者軸力仍富餘較大，該設計比較安全。Geometric nonlinear behaviors in large span cable - stayed bridges have been analyzed in this paper, which include the sag of inclined cable stays caused by their own dead weight ; the interaction of large bending and axial deformation in bending members ; and the large displacements effects. then analyzing theories and researching levels of geometric nonlinear problems of modern cable - stayed bridges have summarized. and methods of modeling cable - stayed bridges for nonlinear finite element analysis have been discussed, which are the equivalent modulus of elasticity, introducing stability functions and continuously modifying geometry of structure
本文分析了大跨徑斜拉橋幾何非線性的主要影響因素，包括斜拉索的垂度效應、彎矩與軸向力組合效應和大變形效應，同時對目前斜拉橋幾何非線性問題的分析理論和研究水平進行了綜述，相應討論了各非線性影響因素的處理方法，即分別採用等效彈性模量法、引入穩定性函數和實時修正結構的幾何位置。分享友人