This paper built the fault-tree of turbine sealing oil system and calculated the failure mode applying fault tree analysis method. 建立了汽轮机密封油系统的故障树,求出了用最小割集法表示的汽轮机密封油系统的失效模式。
By introducing the parameter "mode field radius" of WGMs, the mode separations calculated by mode field radius agree well with the experimental resu. 引入回音壁模式的“模场半径”概念,由“模场半径”计算出的模式间隔和实验测量值之间符合很好。
The earth pressure over the pit bottom calculated by the trapezoid mode, and the result is better according with the rectangle mode of sandy foundation. 坑底以上桩侧土压力采用梯形分布模式,计算结果与砂土地基的矩形分布实测土压力符合较好。
The reliability indexes of the composite foundations of CFG piles is calculated by thenon-dimensional calculation mode and the influence extent of each stochastic variable on the reliability index is also analyzed. 借助无量纲计算模式,计算不同载荷组合下CFG桩复合地基承载力的可靠度指标,并分析了各随机变量对可靠度指标的影响程度。
In the third chapter, based on the results achieved in chapter 2, POF performances, such as differential mode attenuation ( DMA), dispersion and bandwidth, are calculated by using mode power couple equations. 第三章,在已得到的光纤所有传导模传播常数的基础上,利用光纤功率耦合方程建立仿真模型,模拟计算了聚合物光纤的传输带宽、差分模式损耗(DMA)和色散等性能。
Dimensionless characteristic equations of two-dimension and three-dimension membrane roof models are obtained. The critical divergence wind velocity is calculated using single mode method, and critical flutter wind velocities is obtained employing bimodal method. 分别得到了二维和三维薄膜屋盖模型的无量纲特征方程,并利用单模态法求解屋盖的临界发散失稳风速和双模态法求解屋盖的临界颤振失稳风速。
Using a finite element method, cladding-effective-index and effective mode-index are accurately calculated, and mode distributions in different photonic crystal fiber of various wavelength light are given, the results are consistent with the experiments. 使用有限元法精确求得了光子晶体光纤的包层有效折射率和有效模折射率的数值解;给出了不同波长的光在不同结构光子晶体光纤中的模场分布,其结果与实验图样一致。
In order to attribute the load transfer of the flexible pile, it is selected the calculated mode of shear-displacement method by Cooke, and an analytical equation of shear stress of pile is derived. 为表征柔性桩的荷载传递特性,选取Cooke提出的剪切位移法的计算模型,导出了柔性桩的桩侧剪应力微分方程。
Thirty force constants including stretching, bending, out of plane wagging, torsion and various interactions between them were assigned and optimized by a least square fitting of the calculated normal mode vibrational frequencies with those found experimentally. 在简正频率的计算值与实验值拟合优化后,确定了伸缩、弯曲、面外摇动和扭动等21个力常数以及9个相互作用力常数。
So for slender and narrow structures, the peak ice load calculated by non-simultaneous mode is dangerous and should be determined over again. 比由非同时破坏模型计算的要大得多,因此对于柔性窄结构,由非同时破坏模型得到的极值静冰力过于危险,必须重新确定。
After that This paper has analyzed and calculated the wave-guide mode theory. With the computer simulation we find the optimized waveguide structure. 对光波导模式理论进行了理论分析和计算,通过计算机模拟得出了激光器优化波导结构。
We have calculated the mode patterns of the loaded resonator and its optical intensity distribution at far-field. 本文用有源模型分析计算了此类腔的模式,并计算了其远场光强分布。
The numerical results show that the damage location can be identified exactly calculated using the first mode, the first five modes or the first nine modes if there exists one or two damages and also there has the different damage degree. 数值结果表明,对混凝土梁和板存在一处或多处损伤、以及损伤程度不同时,运用第一阶模态、前五阶模态和前九阶模态均能较好地识别损伤的位置。
The main modes of vibration were also analyzed according to the calculated mode results. 根据振动台模态计算结果分析了各主要模态振型。
In the present inversion method, the synthesizing and matching of resolution were introduced while the logging responses were calculated using the numerical mode matching method, then the resolution-match data were used in the inversion program directly. 该方法用数值模式匹配方法计算测井响应,并进行真分辨率合成和分辨率匹配处理,再将分辨率匹配后的数据直接用于反演计算。
The optical characteristic of the index-guide, gain-guide laser diode array and the broad area laser diode is calculated using super mode theory and broad-area mode theory. 本文通过超模理论和宽接触模式理论对折射率导引、增益导引半导体激光器列阵和宽接触条形半导体激光器输出激光的空间模式特性进行了研究。
When the Buck converter is working in the CCM mode, accessibility condition of the sliding mode and the controller's equation are calculated of the sliding mode, the stability of this method is discussed. Buck变换器工作在CCM模式下,计算出该方法的滑模可达性条件及其控制器方程,并论述了该种方法的稳定性。
Five-structure systems are based on the different liquid depths of the storage tank by ANSYS and calculated the frequencies and mode shapes. 根据储油罐内液深的不同采用简化分析方法,分别建立了五种结构体系的有限元模型,并求得了它们的频率和振型。
The profiles of gas-vapor boundary layer thickness, condensate film thickness, interface temperature and local heat transfer flux are calculated and the mode of the effect of nonhomogeneity of noncondensable gas on heat transfer that was neglected in the previous studies is originally revealed in the calculation. 获得了不凝性气体浓度及其分布不均匀性对液膜厚度l、气膜厚度、气液界面温度i和局部换热量Qx等参数的影响规律;
The magnetic current frill excitation model is introduced to simulate the feed structure, thereafter, the properties of coaxially fed microstrip antenna are calculated with additional mode basis functions being introduced to simulate the current distribution at the wire/ patch junction. 最后结合磁流环模型,采用附加模基函数模拟线面结合处的电流分布,计算了同轴线馈电的微带天线的电性能。
Was calculated using finite element mode superposition method. 根据有限元模态叠加法,计算了叶片在气动力、重力和旋转惯性力等确定性载荷作用下的动态应力响应;
Basing on the formula deduced previously for survival fraction of cells irradiated by the un-uniform heavy-ion irradiation field and the theory of tumor control probability, the tumor control probability was calculated for a tumor mode exposed to different dose distribution homogeneity. 受不均匀重离子照射野照射时的细胞存活率理论与肿瘤控制率理论相结合,计算了一个假设肿瘤模型在不均匀剂量分布条件下的肿瘤控制率。
In this paper the theoretical of the vertical earthquake action of long span structure calculated by the multi-vibration mode reaction spectrum method is presented; 阐述大跨结构用振型分解反应谱法计算竖向地震作用的理论依据;
The characteristics of microwave modes in each part of the coaxial extractor system are theoretically analyzed. The scattering matrix parameters of this system are numerically calculated, the mode amplitudes are gained, the support leg is designed and optimized. 对给定参数下的同轴提取区系统的散射矩阵参数进行数值计算,进而得到各微波模式系数,并对支撑杆进行了设计和参数优化。
Twin rotor critical speed is calculated by mode synthesis, the mode of sub structure is obtained by using transmission matrix method ( TMM). 采用模态综合法计算了双转子临界转速,子结构模态由传递矩阵法求得,并着重研究了对接条件、模态数及子振形拟合多项式等因素对双转子临界转速影响。
In this paper, loosely coupled inductive full-bridge converter with primary and secondary series resonant circuit is discussed, the choice of the compensation parameters is detailed calculated, and the mode analysis is presented. 以初次级同为串联谐振的松耦合感应传输方式的全桥变换器为研究对象,对其补偿参数的选取进行了详细推导,给出了谐振时电路的模态分析。
The curves of deflection vs loading calculated from this mode solution are in good agreement with the experimental results. 理论分析得到的挠度-载荷曲线与实验结果符合得很好。
The amplitudes are calculated by mode superposition method. 用振型分解法给出了基础在机器扰力作用下的振幅计算。
And it is demonstrated that the wavelet transformation of mode parameter identification. It is calculated that the mode and phase of the multi-degree of freedom damping vibration system. 对模态参数识别的小波变换方法进行论证,通过该方法计算得出多自由度粘性阻尼振动系统的模和相位。
The system dynamic response is calculated through mode superposition method and the frequency response function matrix is gained from the system equation. 在此基础上对系统进行模态分析,并采用振型叠加法计算系统的动态响应,从运动方程中进一步求取系统的频响矩阵,从频域角度分析系统特性。