It is shown that the approximation method with sufficient accuracy costs less computation time than the direct integration method.
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。
Professor Zhang Senwen from Jinan University created a new direct integration method which makes use of the precise integration 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。
With regard to the nonlinear kinetics problems of a rotor system the direct integration method is more effective than the modality superposition method.
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。
The direct integration method to enhance the calculation accuracy of electromagnetic responses for current dipole source over layered earth is discussed.
讨论了直接利用数值积分提高电偶源电磁测深响应计算精度的方法。
Based on parallel calculation of the high accuracy direct integration method, parallel programs are implemented and some approaches are given in order to save memory.
并行程序采用精细时程积分法的并行算法来实现，并给出了节省存储量的一些途径。
It is found that the displacement input model is more accurate than the generally used acceleration input model, given the same direct integration method and time step.
数值计算结果表明，若采用相同的数值积分方法和积分步长，位移输入模型可获得比加速度输入模型更高的计算精度。
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.
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 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.
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。
The high order single step algorithm is a new method of direct integration for solution equations of motion.
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。
For a layered model the computational procedure for the central difference method of direct integration is very simple and easy.
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。
The paper also investigates the direct numerical integration method to calculate the reliability of struacture and develops a computer program.
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 selection of numerical integration method of precise direct integration is discussed in this paper.
讨论了精细直接积分法中积分方法选择问题。
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.
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。
The highly precise direct integration scheme is used for solving modal dynamic differential equation of the structure nd a dynamic load identification method by the modal responses is proposed.
采用无条件稳定的精细逐步积分法求解结构的模态动力学微分方程，构造了通过结构的模态响应反求荷载列阵的迭代算法。
The highly precise direct integration scheme is used for solving modal dynamic differential equation of the structure nd a dynamic load identification method by the modal responses is proposed.
采用无条件稳定的精细逐步积分法求解结构的模态动力学微分方程，构造了通过结构的模态响应反求荷载列阵的迭代算法。
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