荷載突變 的英文怎麼說
中文拼音 [hézǎitūbiàn]
荷載突變
英文
sudden load change-
We can assume the load dispersion discontinuity lines.
我們可以假設荷載分佈的突變線。After the discussion of the numerical simulation method based on the fdtd method and the pml technique, the motions of the charges and the electrical field lines were first employed to describe the radiation procedures of the pulse electromagnetic waves. then the causes of how the charges are accelerated and how the motion status of the charges are maintained were further studied from the angle of interaction of charge and field. after these analyses, it was pointed out that the pulse radiation is due to the suddenly occurred time - varying electrical field ( displacement current ) in the open space. this view was further evidenced by two examples : one is the partly resistance loaded antenna, the other is the partly curved antenna. the radiation procedures of the pulse electromagnetic waves of many different situations were simulated throughout this paper with the contours and waveforms of electric field given. these figures are very helpful to the understanding of the radiation mechanism of the pulse electromagnetic waves
在討論了基於時域有限差分法和完全匹配層技術的數值模擬方法之後，首先從運動電荷和電力線的角度直觀地描述了脈沖電磁波的輻射過程，然後進一步從場與電荷相互作用的角度分析了天線上電荷是如何被加速以及如何維持其運動狀態的，指出了開放空間中突然出現的時變電場（位移電流）是脈沖電磁波輻射的根本原因.文中還對局部電阻加載的天線和局部彎曲的天線進行了研究，以進一步說明上述觀點.對多種情況下的脈沖輻射過程進行了數值模擬，並給出了電場的等高線和空間波形圖，這些圖形對理解脈沖電磁波的輻射機理非常有益But setting of strengthened floor will result in the sudden variation of structural stiffness and internal force, and will come into being weal story. the yield mechanism will difficultly " story column, weak beam " and " strong in resistance of shear force, weak in resistance of bending moment "
在風荷載作用下，設置加強層是一種減少結構水平位移的有效方法；但在地震作用下，加強層的設置將會引起結構剛度、內力突變，並易形成薄弱層，結構的損壞機理難以呈現「強柱弱梁」和「強剪弱彎」的延性屈服機制。The result of nanoscratching modeling showed that the load on the sample and friction force increased linearly at the initial stage. the load on the sample and the friction force increased suddenly when the film hardened
納米劃痕實驗的數值模擬表明， ti - dlc膜在壓頭劃痕初始階段，縱向載荷和摩擦力都呈線性緩慢增加，在某一點發生突變，這時膜發生了硬化。Because of wrong design, poor working condition or a jump heavy load, bearing will be damaged and be more and more worse during the running time. so at present, monitor and diagnosis to the condition of bearing is a research hotspot
由於設計不當和安裝工藝不好或軸承的使用條件不佳，或突發載荷的影響，使軸承在承載運轉一段時間后會產生各種各樣的缺陷，並且在繼續運行中進一步擴大，使軸承運行狀態發生變化。When there is original stage support only, the load ratio of surrounding rock gets more and more bigger with the increasing of crust stress, correspondingly, the load ratio of initial stage support gets smaller. when the initial stage support and the second support act each other, the load ratio of surrounding rock is more than fifty percent, and it has little change with the increasing of crust stress. the whole analysis of the surrounding rock and support shows that the bottom arch of liner and the feet of liner have serious stress concentration, so do the sidewalls and the foot of a wall of the surrounding rock
通過屈曲理論分析結果對比表明，彈性屈曲和突變失穩分析的結果比非線性屈曲分析的結果要大得多，非線性分析由於考慮了材料非線性和幾何非線性，因而結果與實際接近實際；當只有初期支護時，隨著地應力的增加，圍巖的荷載分擔率增大，相應地，初期支護的荷載分擔率就減小了；當有初期支護和二次襯砌共同作用時，圍巖的荷載分擔率在50以上，這一分擔率隨地應力的增加其變化不大；支護和巖體的整體分析表明，襯砌底拱及拱腳處應力集中嚴重，隧道巖體側墻及墻角圍巖的應力集中也較大。Applying the tool of the wavelet theory, the complex loading signal was composed to the simple loading signal and was used in dynamic stability analysis. it was shown that there were catastrophe skip phenomena and repetitive instability phenomena in the analysis of the dynamic stability of the gerdesker doom latticed shell
應用小波理論將復雜荷載信號變成簡單荷載信號並應用於結構的動力穩定性分析，通過對歌德斯克穹頂網殼結構的動力穩定性分析表明，該結構發生動力失穩時具有突變的跳躍現象，並伴有多次動力失穩發生。According to the characteristic of nine - area diagram of substation vol / var coordinated control, this system gives the defination of fuzzy sets and the degree of membership of input / output variables, and designs corresponding control rules. the results of simulation demonstrate the system can satisfy the constrains of the day - adjusting times of the switching of on - load transformer and paralleled compensation capacitors, and ensure voltage quality, reactive power basical balance. considering the var requirement in different load time period and the control demand in load saltation, a improved control scheme is provided. the results of simulation show the improved scheme can meet the demand of vol / var in different load time period, protect the wrong operation when either voltage or reactive power appears saltation, and decrease the times of regulation of the switching of on - load transformer and paralleled compensation capacitors finally, a background software module of substation vol / var coordinated control is designed, based on the supervisory control and data acquisition system of substation
模擬結果證明該系統能在各種負荷條件下確保電壓合格和無功基本平衡，且能滿足變電站對有載調壓變壓器分接頭日調節次數和並聯補償電容器組的日投切次數的限制。通過考慮不同負荷時段對無功功率的需求和負荷突變情況下的控制要求，對上述模糊控制策略進行了改進，模擬結果證明改進后的控制策略能滿足不同負荷時段對電壓和無功的要求、抑制電壓或無功突變情況下的誤動作，且有效地減少了有載調壓變壓器分接頭和並聯補償電容器組的調節次數。最後基於變電站scada系統設計了一后臺電壓無功綜合控制軟體模塊。分享友人