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    Structural Boundary Conditions Recognition and Damage Diagnosis Based on Neural Networks
    基于神经网络的结构边界条件识别和损伤诊断
    Location of structural boundary between Ji-Hei orogenic zone and Kaiyuan-Shanchen Town section of North China Platform
    吉黑造山带与华北地台开原—山城镇段构造边界位置
    In the environment vibration experiment, the encountered engineering problem is that the test clamp which supports the structure should reflect or simulate the dynamic characteristics provided by real boundary conditions of the structure, which is a dynamic design or dynamic simulation of structural boundary.
    进行坏境振动试验,需要试验夹具能够反映或模拟实际结构的动力学边界条件,是一个结构动力学边界设计问题。 本文针对结构动力学边界条件的识别和结构边界的动力学设计,开展结构边界动力学条件的时域识别方法和有固有频率和振型要求的结构边界条件动力学设计研究,并将着重于通过工程上可实现的结构模拟真实结构提供给实际结构的动力学边界。
    The theory and the procedure for calculating the loading stresses in single layered and double layered plain concrete pavements, treatment of vehicle loading and structural boundary condition, regression of results of finite element calculation, rectification of theoretical solution and determining procedure of comprehensive coefficients adopted in newly issued Specifications of Cement Concrete Pavement Design for highway are introduced in this paper
    介绍新《公路水泥混凝土路面设计规范》中普通混凝土路面结构 (单层和双层 )的荷载应力计算理论和方法 ,车辆荷载和结构边界条件的处理 ,有限元计算结果的回归 ,理论解的修正 ,以及综合系数的确定方法
    Structural boundary status can be judged by the structure damping ratio change.
    通过实测桥梁结构阻尼比的变化,可以对结构边界条件、结构材料阻尼特性的改变进行分析判断。
    At the basis of pointing out the phenomena of sloping surface moving when the loading, structural boundary or hydrology and geology conditions changes, the dynamic stability analysis to considering the moving of sloping surface is putted forwarded.
    在指出最不利滑动面会在荷载、结构边界、水文地质条件等发生变化时发生迁移现象的基础上,提出了基于最不利滑移面迁移的稳定性动态分析方法。
    The 3 σ criterion of reliability theory is applied to analyze and compute the structural responses while the structural boundary conditions are stochastic.
    基于可靠性理论中的3σ准则,对结构的边界条件含有随机因素时的结构响应量进行了分析和计算。
    The present study hypothesizes that the structural boundary defining process in linguistic organization is a cognitive basis for the production of linguistic expressions.
    本研究假设:语言的结构和边界是一个对立的统一体。
    To deal with the grid movement induced by the structural vibration in the numerical simulation of the FSI problem, a new generation method of the dynamic block- structured grid based on the previous researchers’work is proposed in this dissertation. In this method, the movement of the grid block around the moving structural boundary is combined with the regeneration of the inner-block grid to avoid the aberrance of the grid.
    为了解决流固耦合数值研究中两相介质界面上力与运动关系的传递与协调问题,本文在总结前人研究工作的基础上,提出了一种新的动态块结构数值网格生成技术,该技术将包含壁面运动边界的网格块的运动与块内网格的变形结合起来,共同承担因壁面边界运动引起的域内网格的变形,因此能够满足结构大幅运动的需要,而不引起网格的畸变。
    For these situations, a time domain method of the identification of boundary conditions, approaches for dynamic design of structural boundary are developed and investigated in this dissertation.
    本论文主要从以下六个方面对结构边界条件设计与工程实现作系统的研究。
 

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