讨论了精细直接积分法中积分方法选择问题。
The selection of numerical integration method of precise direct integration is discussed in this paper.
对于转子系统非线性动力学问题，直接积分法比模态叠加法更为有效。
With regard to the nonlinear kinetics problems of a rotor system the direct integration method is more effective than the modality superposition method.
暨南大学张森文教授运用精细积分法的成果提出了状态方程直接积分法。
Professor Zhang Senwen from Jinan University created a new direct integration method which makes use of the precise integration method.
利用有限元方法进行正演计算的效率要比直接积分方法至少高一个数量级。
The efficiency of forward calculation by finite element method is one order higher than that by immediate integration.
提出了直接积分法(DIM)研究动态电子光学成像系统时间像差的理论。
A new theory for studying temporal aberrations of dynamic electron optical imaging systems by the direct integral method (DIM) is put forward.
非线性结构时程分析的高阶单步算法是一种新的求解运动方程的直接积分法。
The high order single step algorithm is a new method of direct integration for solution equations of motion.
并对直接积分法在系统可靠度计算中的应用进行了研究，编制了相应的分析程序。
The paper also investigates the direct numerical integration method to calculate the reliability of struacture and develops a computer program.
与原有的精细直接积分法进行了对比，简化方法在保持高精度的同时提高了计算效率。
Compared with the precise immediate integration method, simplified method can maintain the calculation accuracy and improve the calculation efficiency at the same time.
差分型直接积分法求解动力方程，其计算假设条件给系统增加了一个“计算扰动”效应。
The difference type direction integration is used for solving dynamic - equation, its calculation assumption causes a "calculation perturbation" effects to the system.
其次，将逐项积分结果求和并证明了求和结果与传统直接积分法的塑性功率表达式相同；
Then, sum of the termwise integrated results is proved to be equal to that obtained from traditional immediate integration for plastic deformation power.
采用精细时程积分法及状态方程直接积分法，讨论了求解动力响应问题的时程积分方式。
By means of the precise time-integration method and the method of direct integration of state equation, the mode of the time-integration has been discussed on the structural dynamical responses.
分析了不定积分的四种基本求解方法：直接积分、第一换元法、第二换元法、分部积分法。
There are four solutions of indefinite integration in paper: direct integration, the first exchangeable integration, the second exchange - able integration, parcel integration.
但这一偏微分方程不能直接积分，所以通常用纳维法、瑞利-里兹法、有限差分方法等方法求解。
But this partial differential equation can not be directly integral, so usually use Navier method, Rayleigh Ritz method and finite difference method and other methods.
分析结果与直接积分进行对比相对偏差很小，验证了方法的正确性，同时使计算速度得到了提高。
To verify this method, comparing the result with direct integral, the difference is very small, but the calculation rate is efficient.
通过直接积分得到了有限长密绕矩形螺线管自感系数的精确表达式，并对结果进行了图示和讨论。
The exact expression is obtained by integration method for a tightly wound rectangular solenoid of finite length, the result is plotted and discussed.
近似方法与直接积分方法的比较表明近似方法的计算工作量大幅减少，可以给出足够精度的计算结果。
It is shown that the approximation method with sufficient accuracy costs less computation time than the direct integration method.
对于层状模型，若采用直接积分的中心差分方法，计算过程十分简单，也可用于有限差分等方法的计算中。
For a layered model the computational procedure for the central difference method of direct integration is very simple and easy.
文中给出一个算例，其数值结果与直接积分法、精细积分法作了比较，文中方法对结构动力响应计算是十分有效的。
A numerical example is given, the results are compared with direct integration method and precision integration method. It is quite effective for computing the structural dynamic response.
提出了一种用于评估多参数随机变异情况下岩土力学非线性数值模拟结果可靠性的多维高效直接积分型随机分析方法。
A high efficient direct integration method is proposed for evaluating the variation effect of nonlinear numerical simulation results of geomechanics subject to multi-random parameters.
为了求解复合材料多层扁壳在初始薄膜力时的强迫振动，在直接积分法中加入了迭代步骤，推导出了相应的公式和计算步骤。
The iterative method is added into direct integral method to analyze forced vibration problem of laminated composite shallow shells while the relative formulas are derived.
于2007年被黑石集团收购的希尔顿在去年年底表示，从2010年1月中旬起，他们将会提高兑换免费住宿的积分要求(会员积分直接被贬值约20%)。
BX.N, said late last year that it was raising as of mid-January the number of points required for a free hotel night — effectively devaluing members' point balances by about 20 percent.
如果要直接做的话，就需要找到沿c的线积分。
If we do that directly, I have to find the integral along c.
直接对曲梁剪应力的积分方程求解，导出了曲梁剪应力和径向应力的计算公式。
The shearing-stress formula in curved beams can be derived by solving directly an integral equation, and the formula for radial stresses is also presented in this paper.
该法与分段卷积法和图解卷积法相比，不仅可直接表达积分函数，而且又能简化卷积计算。
Compared with the sectioned and graphic convolutions, the method is able not only to express directly the integral functions but to simplify the calculation.
在结构损伤识别的时域法研究中，数值积分的误差将直接影响反演参数结果的精度。
In study on structure damage identification in time domain, error of numerical integral will affect directly accuracy of parameters resulted from reversion.
采用直接蒙特卡洛路径积分方法计算了稠密氢等离子体的物态方程。
The equation of state of dense hydrogen plasma were calculated by Direct Path Integral Monte Carlo approach.
本文利用弹性波理论对流体——流体模型下直接场被井内流体割线积分抵消进行了证明。
By means of the theory elastic wave, this paper demonstrates direct field's being offset under fluid fluid matrix by secant integral in well.
有些积分直接求解，相当麻烦。
因此，在非均质焊接接头中直接应用J积分作为断裂判据不合适。
So, it is doubtful to directly use the J -integral as a fracture criterion in heterogeneous welded joints.
因此，在非均质焊接接头中直接应用J积分作为断裂判据不合适。
So, it is doubtful to directly use the J -integral as a fracture criterion in heterogeneous welded joints.
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