数值稳定性

Simulation results verify that insulated board can effectively protect the heat from transferring into the foundations, and the frozen table is always around the lower bottom of the boards; the position of the frozen table with insulated boards is higher than that of without; the embank- ment formation has a better effect on the center of embankment, the shoulder and toe of the roads than others; after consideration of the construction effect, the best lay out of the insulated boards is higher than the position of natural ground surface to 0.3-0.6 m; this formation of the embankments is the right effective constructer to be used in the permafrost on the Qinghai-Tibet railway.

通过数值模拟可知：保温板能够有效地阻止热量由路基面向下传入地基中，使0℃等温线始终在保温板底层；复合路基多年冻土上限的位置要比无保温板时的高；该结构形式对路基中心、路肩和坡脚下的多年冻土上限抬升的综合效果更好；考虑施工条件后，复合路基在保温板铺设距离天然地面之上0.3~0.6 m对于路基稳定性最为有利；该路基结构形式为青藏铁路多年冻土区路基的理想结构形式，有利于克服全球变暖的影响。

Based on the stability theory of dynamical system, numerical computation of bifurcation diagram and the largest Lyapunov exponent of the linearized systems, the synchronization dynamics of coupled fast spike neurons with excitory chemical synapse was studied.

基于动力系统的稳定性理论、数值计算分岔图和线性化系统的最大Lyapunov指数，研究了经兴奋性化学耦合的快峰神经元的同步动力学。

In this paper, the Three-Dimensional Numerical Simulation of GTS method is adopted to dynamic analysis about the stability of construction when the tunnel is over the faultage.

本文采用GTS三维数值模拟方法，对张石高速黑石岭隧道在穿越断层时的施工稳定性进行了动态分析研究。

The Earth crust activity of different geotectonic elements could be estimated with the fracture fractal dimension.

利用断裂尺度分布的分形维数值的大小，可以定性判断不同大地构造单元的地壳稳定性。

The Earth crust activity of different geotectonic elements could he estimated with the fracture fractal dimension.

利用断裂尺度分布的分形维数值的大小，可以定性判断不同大地构造单元的地壳稳定性。

The nonlinear hyperbolic conservation laws of the transient flow of the media in gas pipeline are hard to he solved, so, the control conservation laws are constituted of mass, momentum arid energy conservation laws, TVD/Godunov hydrid algorithm is used to simulate the transient flow in gas pipeline, and the traditional splitting approach processing nonlinear convection in momentum equation is dismissed ,the convection tern; is directly processed, in the way, the stablization of the algorithm and emulating accuracy of the transient flow are greatly improved.

针对管道中介质瞬变流动的非线性偏微分方程组难以解析求解的问题，由质量、动量、能量三个偏微分方程构成的控制方程组，应用TVD/Godunov混合算法数值模拟天然气管道中气体的瞬变流动，摒弃了传统的差分方法时动量方程非线性时流项的线性化处理，而直接处理非线性对流项，从而大大提高了算法的稳定性和管道瞬变流动的仿真精度。

Progressive failure and hygrothermal effect s was investigated by numerical method.

对湿热环境下考虑累积失效和分层损伤的先进复合材料格栅加筋结构的稳定性进行了数值分析。

By some typical numerical examples , the effects of delamination , hygrothermal and the progressive failure on the stability behaviors of the AGS plate and shell are discussed. The numerical results indicate that the effects of delamination , hygrothermal and progressive failure on the stability of composite AGS structures can not be neglected when the above factors result in a jump of the buckling mode.

通过典型算例讨论了湿热环境、累积失效及分层损伤等因素对复合材料 AGS结构稳定性的影响，数值结果表明当上述因素导致结构的屈曲模式发生突变时，其对 A GS结构稳定性能的影响是不容忽视的。

Finally, the system is investigated experimentally under the theory guidance, and some conclusions, which are useful for engineering, are obtained. The results show that the squeeze film damper is very effective in preventing sub-synchronous and nonsynchronous operation, and the stability of the system can be improved greatly.

最后采用实验研究与数值计算相结合的方法，对挤压油膜阻尼器在滑动轴承支承的转子系统中的减振特性及提高系统运动稳定性的特性进行了深入地分析，并得出了一些对工程应用有意义的结论。

Through orthogonal test method.taken maximum load as judging basis,the effect of mining steps,filling material rigidify and filling ratio on stpoe stability is studied by using RFPA numerical simulation.

通过正交试验方法，运用RFPA数值程序研究了不同开挖步骤、充填体刚度、充填接顶情况对铜陵有色金属公司冬瓜山矿床开挖稳定性的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。