numerical adj. 数字的;数值的;用数字表示的。 (a) numerical order 号数。 a numerical statement 统计。 the numerical strength 人数,兵数。 adv. -ly 用数字,在数字上。
integral adj. 1.完全的;缺一不可的,主要的。 2.【数学】整的,积分的。 an integral steel plant 综合钢铁厂。 an integral part of …的一个主要部分。 an integral whole 整体。 integral equation 积分方程。 n. 全体,整体;【数学】积分。 definite integral 定积分。 double integral (二)重积分。 indefinite integral 不定积分。 n. -ity 完整性。 adv. -ly
There are many sorts of the numerical integral approaches 数值积分法的种类很多。
Limit properties of a kind of gauss numerical integral formula 二次高斯和的计算公式
In this paper, the following work has been done : 1 the load-bearing capacity of l, t and +-shaped columns under axial compression and biaxial bending is calculated by a numerical integral program 本文主要进行了如下工作:1对l、t、十形柱双偏压作用下正截面承载力进行计算,编制了数值积分程序,并对l、t、十形柱偏心矩增大系数进行计算分析。
In computation of stiffness matrix, the calculation of double singular integration is needed . the exactly integral formula is used in the inner integral expression, and the numerical integral formula is used in the outer integral expression 在计算单元刚度矩阵时,对二重积分的第一重使用精确积分,第二重使用数值积分,从而有效的克服了奇异积分的计算。
By combining the numerical integral method, the conventional transfer matrix method that can not be applied in the time varying or nonlinear problems is expanded into the nonlinear multibody system dynamics in this paper 本文结合数值积分法,将不适合于时变、非线性系统的经典传递矩阵法推广到非线性多体系统动力学,形成了多体系统离散时间传递矩阵法的基本理论。
The teclinique of varying order and step size of integration is researched according to the truncation error controi . the study results have established the theory bases for the numerical integral methods of the full dynandc simulation 并研究了根据积分的截断误差控制,自动变阶变步长的技术,为电力系统全过程动态仿真技术中的数值积分方法奠定了坚实的理论基础。
Based on the asymptotic properties for numerical integral formulas, this paper obtains a class of finite difference methods for solving initial value problems of odinary differential equations, and studies the consistency and stability of new methods 摘要基于数值积分公式中间点的渐近性质,获得了一类求解常微分方程初值问题有限差分方法,研究了新方法的相容性和稳定性。
Based this background, this paper studies the some non-linear dynamic problems existing in bearing-rotor system using numerical integral method . the results give some theoretical basis to the designs of similar systems and have specified engineering signifance 在此背景下,以轴承?转子系统为研究对象,利用数值积分法和poincare映射并结合谱分析,研究了转子动力学中的若干非线性问题,所得结果为有关旋转机械的设计及故障监测与诊断提供了一定的依据。
The way to eliminate chaos phenomenon through adjusting system parameters is indicated . the nonlinear dynamic behavior of journal bearing-rotor system in large parameter space is studied in numerical integral method and floquet theory and the first and second bifurcation behavior of nonlinear rotor system are discussed; the concept is advanced that realizing the controllable nonlinear stiffness with sfd with the soft-nonlinear of sma in the super-elasticity state to make the vibration amplitude of system always be in the small solution state to reduce the vibration amplitude of rotor system 运用数值积分方法结合floquet理论对滑动轴承-转子系统的大参数范围非线性动力学特性进行了全面的研究,详细地讨论了系统的一次和二次分岔行为;5)提出了用形状记忆合金在超弹性状态下的软非线性,结合挤压油膜阻尼器实现系统刚性的非线性可控,降低系统在非定常状态下的最大振幅的构想。