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nonlinear     
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  非线性
     Inverse Operator Method and its Application in Nonlinear Dynamic Analysis of Mechanical System
     逆算符法及其在机械非线性动力分析中的应用
短句来源
     1.Molecular Dynamics Simulation for the Vibration Characteristics of Nonlinear Optical Material BBO 2.Reliability Research on Flip Chip Electronic Packaging
     1.非线性光学材料BBO振动特性的分子动力学模拟\2.电子封装倒装焊的可靠性研究
短句来源
     Study on Backcalculation of Pavement Layer Stress Nonlinear Properties
     路面结构层应力非线性特性反演研究
短句来源
     Study on Computational Methods for Two Typical Classes of Nonlinear Problems
     两类典型非线性问题的计算方法研究
短句来源
     Initial Boundary Value Problems to Two Classes of Nonlinear Model Equations in Mathematical Physics
     两类非线性数学物理模型方程的初边值问题
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  非线性
     Inverse Operator Method and its Application in Nonlinear Dynamic Analysis of Mechanical System
     逆算符法及其在机械非线性动力分析中的应用
短句来源
     1.Molecular Dynamics Simulation for the Vibration Characteristics of Nonlinear Optical Material BBO 2.Reliability Research on Flip Chip Electronic Packaging
     1.非线性光学材料BBO振动特性的分子动力学模拟\2.电子封装倒装焊的可靠性研究
短句来源
     Study on Backcalculation of Pavement Layer Stress Nonlinear Properties
     路面结构层应力非线性特性反演研究
短句来源
     Study on Computational Methods for Two Typical Classes of Nonlinear Problems
     两类典型非线性问题的计算方法研究
短句来源
     Initial Boundary Value Problems to Two Classes of Nonlinear Model Equations in Mathematical Physics
     两类非线性数学物理模型方程的初边值问题
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  非线性的
     The Existence and Uniqueness Theorems of the Linear and Nonlinear Hilbert Boundary value Problems in Space
     空间的线性与非线性的Hilbert边值问题解的存在性与唯一性定理
短句来源
     The Influence of 《P--Delta》Effect on Nonlinear Dynamic Earthquake Responses——An Analysis of Stiffness of Bar Members in Consideration to the Nonlinearity and the Geornetrical Nonlinearity of Materials under Conditions of a Large Deflection
     《P—Delta》效应在非线性地震动态反应中的影响 大变形条件下考虑材料非线性和几何非线性的杆件单元刚度分析
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     Nonlinear Inertio-gravity Waves in the Atmosphere
     大气中非线性的惯性重力内波
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     THE CALCULATION OF PROBABILISTIC LOAD FLOW REMAINING NONLINEAR
     保留潮流方程非线性的电力系统概率潮流计算
短句来源
     FINITE ELEMENT ANALYSIS OF ELASTIC LAYER SYSTEM CONSIDERING NONLINEAR CONTACT CONDITION BETWEEN LAYERS
     弹性层状体系考虑层间接触非线性的有限单元分析法
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  类非线性
     Initial Boundary Value Problems to Two Classes of Nonlinear Model Equations in Mathematical Physics
     两类非线性数学物理模型方程的初边值问题
短句来源
     Research on the Generalized Predictive Control of a Class of Nonlinear System
     一类非线性系统广义预测控制研究
短句来源
     On Controllability and Asymptotic Stability of Nonlinear Waves
     一类非线性波的控制及渐近稳定研究
短句来源
     The Behavior of Several Nonlinear Difference Equations
     几类非线性差分方程解的性质
短句来源
     A Class of Nonlinear Diffusion Equations in Perforated Domains
     有孔区域上的一类非线性扩散方程
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      nonlinear
    Local well-posedness for higher order nonlinear dispersive systems
          
    We study nonlinear dispersive systems of the form where k=1, …, n, j ∈ ?+, and Pk(·) are polynomials having no constant or linear terms.
          
    We prove the well-posedness when and construct non-unique solutions for In the second part the well-posedness of the avove IVP for k=2 with μ0?Hs(?n) is proved if and this result is then extended for more general nonlinear terms and initial data.
          
    Based on these facts we treat aspects of nonlinear approximation and show how the new theory can be applied to the Gabor transform on spheres.
          
    Such a formula had been derived in a previous article by the authors, as a consequence of the study of the asymptotic behavior of nonlinear wave operators for small data.
          
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    As a rectangular pulse is applied to a Capacity Loaded Cathode Follower operated under nonlinear condition, the falling edge of the output pulse is engthened. This article analyses the physical processes of the lengthening phenomena both for positive and negative pulses. Theoretical approach to obtain such a falling curve is suggested, and checked by experimental results.

    脉冲波通过运用在非线性情况下的电容负载阴极输出器时,其边缘的下降时间即被拖长。本文分析电容负载阴极输出器拖长正脉冲和负脉冲的下降边缘的物理过程,并提出如何根据电路参数来推求脉冲边缘的下降曲线;实验的结果与理论相符合。

    In this Paper,the important problems of temperature stresses in arch dams are analyzed. Firstly,we consider the transient elastic three dimensional temperature stresses.It is pro- posed to cut the dam into horizontal and vertical systems,compute the stresses and dis- placements arisen therein by the nonlinear temperature distribution on the assumption of Plane section of Bernoulli-Navier,then adjust the displacements of the horizontal and ve- rtical systems by the so called trial load method.Some tables...

    In this Paper,the important problems of temperature stresses in arch dams are analyzed. Firstly,we consider the transient elastic three dimensional temperature stresses.It is pro- posed to cut the dam into horizontal and vertical systems,compute the stresses and dis- placements arisen therein by the nonlinear temperature distribution on the assumption of Plane section of Bernoulli-Navier,then adjust the displacements of the horizontal and ve- rtical systems by the so called trial load method.Some tables are prepared to simplify the calculation.A simple method is suggested to calculate stresses in thick archs.The method of equivalent hydraustatical pressure for temperature variations in arch dams is discussed. The defects of this method are pointed out. Secondly,the influence of creep of concrete is considered.For mature concrete the creep C(t,τ)may be expressed by the following formula: C(t,τ)=C_[1-e-r(t-τ)](49) Where Co and r are constants determined by tests,τ is the time at which the load is applied,and t is the time considered.Then for the sinusoidal temperature stresses,σ= F(x,y,z)sin t,the coefficient k of stress relaxation may be computed by k=sinθ-E_C_r·(g sinθ-ωcosθ)/g~2+ω~2(59) θ=tan~(-1)[(g~2+ω~2)/(E_C_rω)-g/ω](58) Where k=(max.elastic temp.stress)/(max.Visco-elastic temp.stress), E_0=Young's modulus of concrete,θ=time lag of max.str,g=r(1+E_0C_0).As shown in the second example,for concrete of portlant cement,k=0.417 for annual temperature variations,k=0.993 for 15 days Variations,k=1.00 for daily Variations,the stress-time curves are shown in Fig.10.Cofficient k is independent of x,y,z. Thirdly,the problem of subcooling is considered.The stresses caused by subcooling at the time of grouting contraction joints are also reduced by creep of concrete at later time. The final coefficient k of stress relaxation may be computed by k=1/(1+E_0C_0)(65) As shown in the third example,k=0.357 for concrete of portlant cement.

    本文对拱坝温度应力的几个主要问题进行了研究。全文分为三部分,第一部分研究拱坝瞬时弹性温度应力的计算问题,建议把伯努里-纳维埃关于断面在变形后保持为平面的假定与试荷载法相结合来解决拱坝温度应力的空间问题,并提供了计算公式和图表,以便利计算。对厚拱坝的应力分析提出了一个简捷的近似处理方法。对温度折算成静水压力计算的方法进行了评述,指出了它的缺点。第二部分研究混凝土徐变对拱坝温度应力的影响,我们引用马斯洛夫教授关于混凝土徐变的积分方程来分析外界温度按简谐变化时的温度应力问题,得到了一个方便的计算公式。第三部分研究拱坝灌缝时的过度冷却对降低温度应力的效果问题,也建议了一个计算方法。

    As an attempt in the research of nonlinear networks, the application of the polyterminal network theory is suggested in the present paper.

    作为对非线性网络研究上的一个尝试,在文中引入了多端网络理论,研究限于具有恒定通量的非线性网络。得到了关于非线性N端,2n端,ρ+1端,2(ρ+1)端网络的两个基本性质。

     
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