迭代计算

Because this is a physical and boundary condition nonlinear problem, an incremental iterative method is used.

由于这是个物理非线性和边界条件非线性的问题，所以采用了增量迭代计算方法。

According to theory analysis and example computation, the following conclusions are obtained.1. During the analysis on the cable shape in the suspension bridge"s completion state, the pre-displacement of saddle and the case that the cable and stiff girder commonly bear the second-stage dead load should be considered.2. When supposing the construction ideal initial state in the first time, if the initial state model is established according the cable"s span central sag in the bridge"s completion state, and the reasonable correction formulation is created in the iteration process, the result can converges fast.3. The cable shape in the bridge"s completion state is not parabolic, nor catenary. It is between parabola and catenary. Actually it is funicular polygon closer to the catenary.

通过理论分析和实例的计算表明：1在悬索桥主缆成桥线形分析过程中，须考虑主塔鞍座的偏位以及二期恒载由主缆和加劲梁共同承担的实际情况；2在第一次假设施工理想初态时，以成桥状态已知的主缆跨中垂度建立施工理想初态模型，同时在迭代计算的过程中，建立合理的修正公式，才能使收敛的速度快：3在成桥状态时主缆的线形既不是抛物线，也不是悬链线，而是介于抛物线与悬链线之间，更接近于悬链线的索多边形。

This method is established on the basis of finite element method and inverse analysis theory and system identification technique. When the measured values of displacement of the structure or specimens of the composite are given, with the aid of the iterative scheme proposed, mechanical parameter values can be obtained.

该方法是通过运用有限元反分析理论和系统辨识技术建立起来的，当给出复合材料结构或者试件的位移测量值后，用所提出的迭代计算方法，可以计算出相关的性能参数。

Voltage stability index calculated on the basis of power flow equationconventionally needs iterative computation of the whole system network, which istime consuming and therefore not appropriate for on-line monitoring.

中文摘要：传统的基于系统潮流方程的电压稳定指标需要对整个系统进行迭代计算，计算速度缓慢，不能有效地对系统电压水平进行实时监测。

When a natural gas network is done off-line numerical simulation,every pipeline needs be distributed initiatory flow as the initiatory value of iterative computation.

引言在对天然气管网进行离线数值模拟计算时，需要给各管段分配初始流量，作为迭代计算的初始值。

New iteration way for free surface and discharge is presented on the basis of the characteristics of Monte Carlo method.

根据蒙特卡罗方法可以独立计算区域内任一点值的特点，提出了相应的自由表面和流量的迭代计算方法。

In the process of calculation, the stator terminal voltage was taken as restriction condition, and the starting current is iterated to obtain the starting current and starting torque under the rated voltage.

在计算过程中，以定子端电压为约束条件，对定子起动电流进行了迭代计算，得到了额定电压下的起动电流和起动转矩。

The results show that the accuracy of this method can meet the requirements of engineering calculations completely; the iteratively calculated cable shape is smooth.

研究结果表明：该方法精度完全能满足工程计算要求，迭代计算出的主缆线形平顺。

By the use of CAD method to carry out the research on key problems of three ring typed less teeth difference reducer-the inner and outer gears have to be designed by adopting modified transmission was advanced. And to study a method for carrying out numerical calculation by adopting the powerful functioned mathematical software MATHCAD in the solution of coincidence extent on less teeth differenced internal messing and in iterative computation for equation set of interference coefficient of tooth profile overlapping.

提出用CAD法研究三环式少齿差减速器设计的关键问题―内外齿轮必须采用变位传动的设计，并研究在求解少齿差内啮合的重合度和齿廓重叠干涉系数方程组的迭代计算中，选用功能强大的数学软件MATHCAD进行数值计算的方法。

In modeling of a turbo charged diesel engine,the fill empty method is used to avoid iteration calculation that appears in quasi steady method,and still requiring reasonable computation capacity.

使用容积法建立涡轮增压柴油机模型，可以避免准稳态法中流量和压力关系的迭代计算，同时对计算量的要求又在合理的范围内。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。