EDITORIAL COMMITTEE OF "APPLIED MATHEMATICS AND MECHANICS

ＥＤＩＴＯＲＩＡＬＣＯＭＭＩＴＴＥＥＯＦ＂ＡＰＰＬＩＥＤＭＡＴＢＥＭＡＴＩＣＳＡＮＤＭＥＣＨＡＮＩＣＳ＂Ｅｄｉｔｏｒ－ｉｎ－ｃｈｉｅｆ：ＣｈｉｅｎＷｅｉｚａｎｇ（钱伟长）ＶｉｃｅＥｄｉｔｏｒ－ｉｎ－ｃｈｉｅｆ：＇ＴａｎＨａｏｓｈｅｎｇ（谈镐生），Ｙｅ...     

A COMPARATIVE STUDY ON THEh－CONVERGENCE OF 4－NODE AND 8－NODE QUADRILATERAL ELEMENTS

ＤｕａｎＭｅｉ（段梅）；ＹｕｔａｋａＭｉｙａｍｏｔｏ（宫本裕）；ＺｈｏｕＢｅｎｋｕａｎ（周本宽）；ＣｈｅｎＤａｐｅｎｇ（陈大鹏）（ＲｅｃｅｉｖｅｄＭａｒｃｈ２，１９９５）ＡＣＯＭＰＡＲＡＴＩＶＥＳＴＵＤＹＯＮＴＨＥｈ－ＣＯＮＶＥＲＧＥＮＣＥＯＦ４－Ｎ...     

Plane elasticity in sectorial domain and the Hamiltonian system

ＰＬＡＮＥＥＬＡＳＴＩＣＩＴＹＩＮＳＥＣＴＯＲＩＡＬＤＯＭＡＩＮＡＮＤＴＨＥＨＡＭＩＬＴＯＮＩＡＮＳＹＳＴＥＭＺｈｏｎｇＷａｎ－ｘｉｅｔａｐ（钟万勰）（ＤａｌｉａｎＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ．Ｄａｌｉａｎ）（ＲｅｃｅｉｖｅｄＤｅｃ．...     

Inflation in Ω-field Cosmology,

ＩＮＦＬＡＴＩＯＮＩＮΩ－ＦＩＥＬＤＣＯＳＭＯＬＯＧＹＬｅｅＷａＴｓａｎ（李华　）Ｙｕｘｉｎ（ＡｌｆｒｅｄＹｕ）（余）（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＭａｔｈｅｍａｔｉｃｓ，ＨｏｎｇＫｏｎｇＰｏｌｙｔｅｃｈｎｉｃ，ＨｏｎｇＫｏｎｇ）（Ｒｅｃｅ...     

Effects of AMB parameters on the dynamic stability of the rotor

ＥＦＦＥＣＴＳＯＦＡＭＢＰＡＲＡＭＥＴＥＲＳＯＮＴＨＥＤＹＮＡＭＩＣＳＴＡＢＩＬＩＴＹＯＦＴＨＥＲＯＴＯＲＷａｎｇＨｏｎｇ－ｌｉ（王洪礼）ＷｕＺｈｉ－ｑｉａｎｇ（吴志强）（Ｄｅｐｔ,ｏｆＭｅｃｈａｎｉｃｓ,ＴｉａｎｊｉｎＵｎｉｖｅｒｓｉｔｙ）Ｔｉａｎ...     

时滞对结构振动半主动控制效果的影响

应用磁流变阻尼器对结构振动进行控制，采用最优控制原理设计了控制器，给出在地震激励下结构半主动控制的仿真计算。研究了时滞对结构振动半主动控制效果的影响。数值结果表明：本文设计的半主动控制策略可有效地减小结构的振动响应，时滞对磁流变半主动控制效果随着时滞的增大而变差，但时滞不会导致该反馈控制系统的失稳。     

INVARIANT MANIFOLDS AND THEIR STABILITY IN A THREE－DIMENSIONAL MEASURE－PRESERVING MAPPING SYSTEMS

ＩＮＶＡＲＩＡＮＴＭＡＮＩＦＯＬＤＳＡＮＤＴＨＥＩＲＳＴＡＢＩＬＩＴＹＩＮＡＴＨＲＥＥ－ＤＩＭＥＮＳＩＯＮＡＬＭＥＡＳＵＲＥ－ＰＲＥＳＥＲＶＩＮＧＭＡＰＰＩＮＧＳＹＳＴＥＭＳＬｉｕｊｉｅ（刘杰）（ＲｅｃｅｉｖｅｄＤｅｃ．１．１９９４；Ｃｏｍｍｕｎｉｃ...     

THE SLIDING SURFACE ALGORITHMSINTHREE－DIMENSIONAL DYNAMIC FINITE ELEMENT CODE

ＴＨＥＳＬＩＤＩＮＧＳＵＲＦＡＣＥＡＬＧＯＲＩＴＨＭＳＩＮＴＨＲＥＥ－ＤＩＭＥＮＳＩＯＮＡＬＤＹＮＡＭＩＣＦＩＮＩＴＥＥＬＥＭＥＮＴＣＯＤＥＳｏｎｇＳｈｕｎ－ｃｈｅｎｇ（宋顺成）（ＩｎｎｅｒＭｏｎｇｏｌｕａＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＭｅｔ...     

Initial value problem for high dimensional dynamic systems

ＩＮＩＴＩＡＬＶＡＬＵＥＰＲＯＢＬＥＭＦＯＲＨＩＧＨＤＩＭＥＮＳＩＯＮＡＬＤＹＮＡＭＩＣＳＹＳＴＥＭＳＺｈｕＣｈａｎｇ－ｊｉａｎｇ（朱长江）（Ｉｎｓｔ．ｏｆＭａｔｈ．Ｓｃｉｓ．,ＡｃａｄｅｍｉａＳｉｎｉｃａ,Ｗｕｈａｎ４３００７１）（Ｒｅｃｅｉｖｅｄ...     

SECOND ORDER EFFECTS IN AN ELASTIC HALF－SPACE ACTED UPON BY A NON－UNIFORM NORMAL LOAD

ＳＥＣＯＮＤＯＲＤＥＲＥＦＦＥＣＴＳＩＮＡＮＥＬＡＳＴＩＣＨＡＬＦ－ＳＰＡＣＥＡＣＴＥＤＵＰＯＮＢＹＡＮＯＮ－ＵＮＩＦＯＲＭＮＯＲＭＡＬＬＯＡＤＬｉｕＹｏｕ－ｗｅｎ（刘又文）（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈ...     

边界层转捩区不稳定流结构的声辐射

基于Ｌａｕｃｈｌｅ的平板边界层转捩区的声辐射理论,通过估算转捩区内各点“上升时间”,同时采用Ｊｏｓｓｅｒａｎｄ的转捩区内间歇因子和湍猝发频率对随机指示器函数的时－空相关分布做修正,从而估算了平板边界层转捩区辐射声功率谱,并对影响其谱峰和谱级的各种因素进行了分析。     

柔性多体系统动力学通用算法研究

柔性多本系统运动学动力学仿真通用软件可广泛服务于工程领域,基于Ｋａｎｅ方程建立一种开发该类软件的一般算法,通过定义的辨识函数解决束识别问题,利用振型描述构件的弹性变形,建立了递推格式的运动学模型,提出了计算偏带度、偏角速度和运动微分方程系数矩阵的“０－１”法,最后给出的算例表明所建立的算法是可行的。     

The Study of Non-Linear Structure

In this paper, the Elman’s recurrent neural network is developed to identify non-linear structure in block-box, and a nonlinear state space model of structure is determined. An accelerated adaptive learning-rate algorithm is proposed. Results of identification show that the Elman’s recurrent model is superior to the traditional model. It is adaptive to the identification of the non-linear and uncertain structure.     

结构元件安全评估与监控的风险预测方法

提出了一种评估结构疲劳可靠性的方法－风险预测方法。该方法利用结构在服股过役过程中的信息,在考虑了工程结构承采载荷的各态历经性的基础上,结合了结构元件寿命机分布形式和Ｍｉｎｅｒ线性累积损伤理论,以风险值来评价并监控结构元件在不同时间失效的危险性,并用算例和试验结果进行对比分析。     

用电化学方法测试动脉模型壁面剪应力

应用电化学方法,对动脉模型Ｔ型分叉部位流场壁面剪应力进行测试研究。测试了对于现有理论分析和数值计算都比较困难的高雷诺数（ＲＥ＝１０００－２０００）流动流场的壁面剪应力,并且对苦干不同雷诺数及不同支管分流情况进行了系列测试。通过实验发现,此部痊同时存在高剪应力区和低剪应力区,确定了它们的位置和剪应力的大上。系列测试还显示：随着雷诺数的变化,无量纲管应力有一定的变化;而当支管分流变化时,无量纲剪应力的     

逆流式冷却塔填料及淋水分布的数值优化设计

在逆流式自然通风冷却塔流场、温度场和湿度场数值模拟工作的基础上,采用数值分析的方法研究了非均匀填料分布及非均匀淋水密度分布对提高冷却效率的影响,结合某电厂的工程设计实例,给出了最佳的填料层分布及淋水密度分布。     

斜拉桥主梁振动对拉索阻尼器减振效果的影响

应用拉索索端阻尼器是大跨度斜拉桥拉索减振的主要措施之一. 将主梁、索与阻尼器组合起来作为一个振动体系,通过理论分析与试验研究相结合的方法初步研究了主梁振动对拉索附加阻尼器减振效果的影响. 建立了由索、梁和Kelvin阻尼器组成的简化理论模型; 设计了索、梁和阻尼器组合系统的简化力学试验模型; 详细研究了主梁振动对拉索附加阻尼器减振效果的影响. 理论与试验分析结果表明: 对于容易发生索、梁耦合振动的拉索,主梁振动明显降低拉索附加阻尼器的减振效果;在大跨度斜拉桥拉索的减振设计中,需考虑主梁参与振动的影响.      

Minimizers of Caffarelli–Kohn–Nirenberg Inequalities with the Singularity on the Boundary

Some analytically solvable problems of optimal protection against vibration and shocks are considered in linear and nonlinear formulations. In the linear formulation, they can be solved by using up-to-date methods of systems theory (optimization in Hardy H ₂ H spaces, solution of the algebraic Riccati equation, synthesis of optimal systems under uncertainty, etc.). An expression is presented for the optimal nonlinear characteristic (tangensoid) of a damper with a limited free running under broadband stochastic vibrations. Relations linking the free running of the damper, the vibroload of the damped device, and the vibration intensity are derived for the optimal nonlinear system     

Some Optimization Problems for Vibroprotective Systems

Some analytically solvable problems of optimal protection against vibration and shocks are considered in linear and nonlinear formulations. In the linear formulation, they can be solved by using up-to-date methods of systems theory (optimization in Hardy H ₂ H spaces, solution of the algebraic Riccati equation, synthesis of optimal systems under uncertainty, etc.). An expression is presented for the optimal nonlinear characteristic (tangensoid) of a damper with a limited free running under broadband stochastic vibrations. Relations linking the free running of the damper, the vibroload of the damped device, and the vibration intensity are derived for the optimal nonlinear system     

On the Schrödinger–Poisson–Slater System: Behavior of Minimizers, Radial and Nonradial Cases

This paper is motivated by the study of a version of the so-called Schrödinger–Poisson–Slater problem: $- \Delta u + \omega u + \lambda \left( u^2 \star \frac{1}{|x|} \right) u=|u|^{p-2}u,$ where ${u \in H^{1}(\mathbb {R}^3)}This paper is motivated by the study of a version of the so-called Schr?dinger–Poisson–Slater problem:

- Du + wu + l( u2 *\frac1|x| ) u=|u|p-2u,- \Delta u + \omega u + \lambda \left( u^2 \star \frac{1}{|x|} \right) u=|u|^{p-2}u,