给出的数值算例说明了粘弹性系数对稳定性边界的影响。
Numerical examples are presented to show the effects of viscoelastic coefficient on the stability boundaries.
当工作点越过稳定性边界时,低频不稳定的振幅逐渐消失。
As the operating point crosses over the stability boundary, the chug amplitude disappears.
进而采用根轨迹方法就反馈增益和延迟时间进行参数分析,获得系统的颤振稳定性边界。
Furthermore, it performed the parametric analysis in terms of feedback gains and delayed time using the root locus method, thus obtaining the system's flutter stability boundary.
一个系统的临界状态,带有一个阶段的国家接近于打破的稳定性条件的边界,被详细讨论。
The critical state of a system, with the one-phase state being close to the boundary of stability conditions breaking, is discussed in detail.
双万向轴的优化数学模型必须满足强度、刚度、振动条件、稳定性及边界条件的约束。
The optimal mathematical model of the double universal spindle must satisfy the constraints of strength, rigidity, vibration condition, stability and boundary condition.
这种边界是相对的,仅具有暂时的稳定性和有效性,它随着情境的变化而不断变迁。
This kind of boundary is relative, only has the temporary stability and the validity, it along with situation change, but unceasing vicissitude.
分析了系统的非负不变性、边界平衡点性质及全局渐近稳定性。
Mathematical analyses of the model equations with regard to invariance of non-negativity, nature of equilibria and global stability are analyzed.
建立了组合梁在任意边界条件下振动与稳定性的状态空间控制方程和振动频率与轴压载荷之间的相互关系式。
The state space equations for vibration and stability of composite laminated beams under axial compression have been derived for arbitrary boundary conditions.
边界控制理论适用于所有的非线性开关变换器电路,是一种简单有效的稳定性判定和提高动态响应的控制方法。
The boundary control theories can be applied to all nonlinear switching circuits, and it is a simple and valid control method for judging stability briefly and raising the dynamic response validly.
数值结果表明,奇异杂交边界点法具有较高的精度和数值稳定性。
Numerical examples have shown high accuracy and high convergence rates of the presented scheme.
采用非线性理论和仿真计算的办法研究了各个反馈系数相应的稳定区间及稳定区间边界点上的稳定性。
Using nonlinear theory and simulation methods studied the stability range of each feedback coefficient and the stability character on the border point of stability range.
将沙丘背风坡的稳定性问题等价于一个双参变量函数的待定边界的泛函极值问题。
The problem of the lee slope stability of dune is equivalent to the extremal problem of a functional of two-variant function with a variable boundary in this paper.
讨论了一类带有扩散和具有阶段结构与时滞的两种群捕食系统,分析了该系统的非负不变性、边界平衡点性质及全局渐近稳定性。
A system of retarted functional differential equations as a predator-prey model with stage structure and dispersion is discussed. Conditions for global stability of the system are given.
算例表明,高阶样条权函数在局部边界积分方程方法中有好的收敛性、稳定性和精度。
The numerical results show that higher spline weight functions in the local boundary integral equation method have excellent properties.
经推导,得到了反映水流动力因素、河床几何尺寸和边界特征的河床稳定性综合指标一般表达式。
Through derivation the general formula is obtained, which reflects the flow dynamic factors, the characteristics of river-bed geometry and boundary.
本文用变分法对悬臂矩形板在对称边界荷载下的稳定性进行研究。
The stability of cantilever rectangular plates under the symmetrical edge loading will be studied in this paper by the variational calculus.
与线性稳定性理论的结果相比,二者的关系和不可压边界层的情况相似。
Compared with those obtained by linear stability theory, the situation is similar to those for incompressible boundary layer.
但是这些边界条件大多存在着边界稳定性和大角度入射的问题。
But most of these boundaries had the problem of instability and large Angle incident.
严格地证明了它们的稳定性及其与解析边界条件的相容性。
The stability of these boundary conditions and their consistency with the analytical boundary conditions are proved.
通过算例,清楚地显示了流动的非平行性对边界层稳定性的影响。
The examples presented clearly show the effect of nonparallel flow on boundary layer stability.
软弱层带是控制岩体稳定性的重要边界条件。
The weak layers are the most important boundaries controlling rock mass stability.
给出了离心泵叶片表面的边界层动量积分方程的解的构造及其计算方法,并以计算实例说明了该解的唯一性和算法的稳定性、收敛性。
Solutions of the boundary layer momentum integral equations of vanes in centrifugal pumps are given and their calculation method and their illustration with example are given too.
研究了具阻尼及动态边界条件的弹性板的指数可稳定性。
The elastic plate with damping and dynamical boundary feedback controls was studied.
本文从稳定性的观点出发,研究了粘弹性柔性壁对湍流边界层的影响。
The influence of a viscoelastic compliant wall on the turbulent boundary layer was studied from the viewpoint of stability.
采用非线性抛物化稳定性方程(PSE)研究了非平行边界层的弱非线性稳定性。
The weak nonlinear instability of a nonparallel boundary layer is studied by nonlinear parabolized stability equations(PSE).
与经典的平行流边界层稳定性结果相比,显示了在某些条件下非平行性对稳定性的关键作用。
The key function of the non-parallelism under some conditions is shown by the comparison of the results from the classical stability problem of the parallel flow.
本文给出的平板边界层第一模式的稳定性分析和转捩区数值预报结果,与已有的实验结果一致。
The result in this paper about the first mode of stability and the numerical transition prediction about plate fit the result of experiments very well.
本文给出的平板边界层第一模式的稳定性分析和转捩区数值预报结果,与已有的实验结果一致。
The result in this paper about the first mode of stability and the numerical transition prediction about plate fit the result of experiments very well.
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