• 基于改进当地流活塞理论推导了用模态坐标表示的弹性振动翼面的非定常广义气动力表达式

    Based on the improved local piston theory, this paper presents the matrix expression of generalized aerodynamic forces expressed by the generalized coordinates.

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  • 方法将原参数欧拉方程组重新组合成以广义黎曼变量表示欧拉方程组,再用点二步迎风格式离散求解。

    Euler equations of generalized Riemann variable are derived from unsteady primitive variable Euler equations and solved by using two - a point-two-step upwind finite difference method.

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  • 颤振特性分析所需要广义气动力根据亚音速非定升力理论采用马蹄振荡压力偶极子格计算的。

    The generalized aerodynamic force required in analysis is calculated by using horse shoe vortexvibrational pressure doublet grid method, based on theory of subsonic unsteady lifting plane.

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  • 广义动态入流理论基础,基于经典非定气动载荷理论,建立尾迹畸变尾迹耗散的实时分析模型

    Based on the generalized dynamic inflow theory and classic non-steady aerodynamic loading theory, a real time model is obtained by establishing wake distortion and decay.

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  • 包括特征值反问题广义值反问题,类问题包括加法乘法经典代数特征值反问题

    This includes normal and generalized inverse eigenvalue problem which includes the additive, multiplicative classical inverse eigenvalue problems as special cases.

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  • 本文给出了具有突变率的广义生-灭过程返性、正返性、指数遍历性的充分必要条件

    The necessary and sufficient conditions for recurrence, positive recurrence, exponential ergodicity and strong ergodicity of the process are presented.

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  • 研究广义时滞线性系统稳定性,由此提出了系统时滞无关稳定的条件,并给出了一个与系统时滞相关稳定充分条件。

    The stability of linear generalized system with time delay is studied. Based up on this, the sufficient conditions for delay independent stability of linear generalized system are proposed.

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  • 依据应力线性应力下广义协调条件推导广义协调位移进而得到有限元

    According to the generalized conforming condition of constant stress and linear stress, the generalized conforming displacement is deduced, and the finite element equation is obtained.

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  • 依据应力线性应力下广义协调条件推导广义协调位移进而得到有限元

    According to the generalized conforming condition of constant stress and linear stress, the generalized conforming displacement is deduced, and the finite element equation is obtained.

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