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模态截断法
相关语句
  modal truncation
     A method to treat stochastic dynamic equation of complicated structure by means of modal truncation method and to compute response statistics of dynamic system in the time domain is presented.
     本文提出了用模态截断法处理复杂结构的随机振动方程、及时域上计算系统随机响应的方法。
短句来源
     Based on the modal truncation method of eigenderivatives and certain approximation, a set of formulations for sensitivity numbers of mean squared random dynamic responses is derived.
     基于特征导数的模态截断法和近似处理 ,导出了一套平均均方动响应的灵敏度公式。
短句来源
     Based on the modal truncation method and some approximate treatments,a structural mean square dynamic response expression under narrow-band random excitations as well as their sensitivities are derived. According to engineering practical requirements,a set of topology optimization formula and its procedure,with static loads and narrowband random excitations on the structure,are built. Numerical examples show that the method proposed is of good rationality and efficiency in engineering application.
     基于模态截断法和一些近似处理,导出了一套窄带随机均方动响应及其灵敏度公式,再根据工程实际要求,研究了静载荷和窄带随机载荷作用下结构的动力学拓扑优化设计方法和算法,提供的算例显示了本方法的合理性和有效性。
短句来源
     In this paper,dynamic modeling and application of the modal truncation approach(MTA) to a high-speed rotating thin elastic plate are studied.
     研究了做高速旋转柔性矩形薄板的耦合动力学建模理论和模态截断法的应用。
短句来源
     Comparison with the modal truncation based on equilibrium realization shows that the modal truncation method based on the energy criterion is much more fit for the flexible manipulator system with the consideration of the rigid-flexible coupling factors.
     通过与基于均衡实现的模态截断的比较,显示基于能量判据的模态截断法更适合于考虑刚柔耦合的柔性机械臂系统。
短句来源
  modal truncation method
     A method to treat stochastic dynamic equation of complicated structure by means of modal truncation method and to compute response statistics of dynamic system in the time domain is presented.
     本文提出了用模态截断法处理复杂结构的随机振动方程、及时域上计算系统随机响应的方法。
短句来源
     Based on the modal truncation method of eigenderivatives and certain approximation, a set of formulations for sensitivity numbers of mean squared random dynamic responses is derived.
     基于特征导数的模态截断法和近似处理 ,导出了一套平均均方动响应的灵敏度公式。
短句来源
     Based on the modal truncation method and some approximate treatments,a structural mean square dynamic response expression under narrow-band random excitations as well as their sensitivities are derived. According to engineering practical requirements,a set of topology optimization formula and its procedure,with static loads and narrowband random excitations on the structure,are built. Numerical examples show that the method proposed is of good rationality and efficiency in engineering application.
     基于模态截断法和一些近似处理,导出了一套窄带随机均方动响应及其灵敏度公式,再根据工程实际要求,研究了静载荷和窄带随机载荷作用下结构的动力学拓扑优化设计方法和算法,提供的算例显示了本方法的合理性和有效性。
短句来源
     Comparison with the modal truncation based on equilibrium realization shows that the modal truncation method based on the energy criterion is much more fit for the flexible manipulator system with the consideration of the rigid-flexible coupling factors.
     通过与基于均衡实现的模态截断的比较,显示基于能量判据的模态截断法更适合于考虑刚柔耦合的柔性机械臂系统。
短句来源
  “模态截断法”译为未确定词的双语例句
     This paper deduces the finite element formulation of intelligent plate containing distributed Piezoceramics on its surface using Hamilton principle adopting finite element model of 12 DOF with 2 electrical DOF, and reduces the order of intelligent plate using the following process in turn: Model truncation, Minimal realization, Balancing reduction.
     本文针对压电智能板结构,采用12个位移自由度、2个电自由度的有限元模型,利用Hamilton原理,详细推导了压电智能板结构的有限元运动微分方程; 依次利用模态截断法、最小实现、平衡降阶法对压电智能板结构的系统方程进行了降阶处理;
短句来源
     Second, in order to deal with the dynamic control problem of structures with static and dynamic requirement in practical engineering, a set of response formula of structures with narrow band excitation and its sensitivity are proposed, and a new dynamic optimization criterion of structures with static and dynamic requirement, is given.
     其次,为了处理实际工程中的动静力联合作用下的动力控制问题,基于模态截断法和一些近似处理,本文导出了一套窄带随机激励下的均方动响应及其灵敏度公式,研究了静载荷和窄带随机载荷作用下结构的动力学拓扑优化准则。
短句来源
     Since the number of generalized coordinates is large when using the finite element method,MTA is usually used for improving computational efficiency and only lower-order modes are chosen.
     因为用有限元离散时,柔性薄板的广义坐标规模较大,故仿真计算需要时间较长,所以模态截断法被用来缩减广义坐标数量,提高计算效率。
短句来源
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  modal truncation
Dynamic modeling and modal truncation approach for a high-speed rotating elastic beam
      
Since using lower-order transverse modes for modal truncation obviously can cause error, addition of more transverse modes may improve the result.
      
The effect of modal truncation and means to approximate corresponding dynamic displacement residuals are discussed for linear, anisotropic solid bodies and structures with general damping.
      
In this paper we examine order reduction of parabolic systems using modal truncation.
      
In the common method of modal truncation controllability constraints are first reformulated as an infinite sequence of moment equations, which is then truncated to a finite set of equations.
      
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This paper illustrates the method, based on modern control theory, for analyzing earthquake response of long-span structures in time domain. The earthquake is a non-stationary stochastic process,imparted the supports of the structure with time differences.The mode truncation technique is used for reducing the degree of freedom. This method is quite suitable for solution on computers.

本文用现代控制理论的时域方法对大跨度建筑物进行地震响应分析。将地震作用作为非平稳随机过程对待,结构支点处的输入有时间差。对于多跨结构采用模态截断法以缩减系统的自由度。文章所提供的方法易于在计算机上求解。

An equivalent linearization method for obtaining the response of nonlinear multi-degree-of-freedom dynamic systems to nonstationary gaussian excitation with nonzero mean is presented. Using the property of gaussian vector processes, the closed formulas of the coefficients of the equivalent linear system are obtained. The linear coefficients obtained are as simple as those of the Atalik and Utku method in mathematical form. A method to treat stochastic dynamic equation of complicated structure by means of modal...

An equivalent linearization method for obtaining the response of nonlinear multi-degree-of-freedom dynamic systems to nonstationary gaussian excitation with nonzero mean is presented. Using the property of gaussian vector processes, the closed formulas of the coefficients of the equivalent linear system are obtained. The linear coefficients obtained are as simple as those of the Atalik and Utku method in mathematical form. A method to treat stochastic dynamic equation of complicated structure by means of modal truncation method and to compute response statistics of dynamic system in the time domain is presented. One numerical method to compute mean and covariance equations of stochastic dynamic system is presented.

本文提出了一种在非零均值非平稳高斯激励下获得非线性多自由度系统响应的等效线性化方法。利用高斯过程的性质,得到了等效线性系数的封闭公式,等效线性系数在数学形式上与 Atalik和 Utku法得到的结果一样简洁。本文提出了用模态截断法处理复杂结构的随机振动方程、及时域上计算系统随机响应的方法。提出了求解随机振动系统 均值和方差方程的计算方法。

This paper considers the extension and modification of ESO method to control the random dynamic responses of structures under earthquake excitations useing structural shape optimization. First, the random dynamic theory is applied to build an expression of random dynamic response constraints considering engineering requirements. Based on the modal truncation method of eigenderivatives and certain approximation, a set of formulations for sensitivity numbers of mean squared random dynamic responses is derived....

This paper considers the extension and modification of ESO method to control the random dynamic responses of structures under earthquake excitations useing structural shape optimization. First, the random dynamic theory is applied to build an expression of random dynamic response constraints considering engineering requirements. Based on the modal truncation method of eigenderivatives and certain approximation, a set of formulations for sensitivity numbers of mean squared random dynamic responses is derived. The algorithm is implemented with on optimization software package. Several examples are provided to demonstrate the validity and effectiveness of the proposed method.

通过推广和修改 ESO方法来进行结构形状优化设计 ,以达到控制地面运动激励下的结构随机动力响应的目的。根据工程实际要求 ,用随机动力学理论构造具有白噪声功率谱的地面运动的随机动响应表达式。基于特征导数的模态截断法和近似处理 ,导出了一套平均均方动响应的灵敏度公式。在优化软件上实现了形状优化算法 ,提供的算例显示了本方法的合理性和有效性

 
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