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 板单元的 The Characteristic Analysis of Nine Parameter Triangular Plate Element for Quasi-conforming Technique 拟协调九参数三角形板单元的性态分析 ERROR ANALYSIS OF QUADRIC SPLINE RECTANGULAR THIN PLATE ELEMENT 二次样条矩形簿板单元的误差分析 REFINED HYBRID MINDLIN PLATE ELEMENT FOR GEOMETRICALLY NON LINEAR ANALYSIS 精化杂交Mindlin板单元的几何非线性分析(英文) Analysis of Local Effect of Triangular Plate Element 三角形板单元的局部效应分析 On the basis of discussing on the beam element, the thickness of the plate element t and the inertia Iy as the parameters of sensitivity analysis were discussed to analyze the structure parameter by themethod of the difference sensitivity analysis. 本文应用差分敏感性分析的方法对结构物理参数进行分析,通过前面对梁单元的讨论,将计算模型中敏感性分析的参数缩小为仅讨论板单元的厚度t_p和梁单元的惯性矩I_y。 The analytical trial function method was used to extend the existing Kirchhoff triangular thin plate element, to the corresponding lock-free Mindlin triangular thick plate element. 为了有效克服剪切闭锁问题,利用已有的薄板单元构造厚薄板通用单元,提出了采用解析试函数法(ATF),将已有的Kirchhoff三角形薄板单元推广为相应的Mindlin三角形厚板单元的通用方法。 Firstly, by applying the theory of Kelvin functions, the exact transfer matrix of an annular plate element with uniform thickness is derived. 其次,基于开尔文函数理论导出了文克勒地基上等厚度环板单元的正确传递矩阵,并证明了当地基参数趋近于零时,该传递矩阵退化为一般等厚度环板的传递矩阵. Exact Solution of Triangle Plate Element under Arbitrary Excitation 任意荷载下三角形板单元的精确解 LOCAL DYNAMIC EFFECT MODIFICATION OF TRIANGLE PLATE ELEMENT UNDER ARBITRARY EXCITATION 任意载荷下三角形板单元的局部动力效应修正 2. Dimensionless Design Variables To suit the connection of the variables in the engineering reality, the dimensionless design variables are adopted in the paper. Its benefit is that different structural sizes can be controlled by single design variable, such as the thickness of plate element and the area of bar element can be controlled by single dimensionless design variable. 2.采用无量纲设计变量为了适合工程实际的设计变量连接,利用无量纲设计变量,其好处是可以跨单元、跨截面的用同一个设计变量控制不同类型的结构尺寸(如板单元的厚度、杆单元的截面面积等)。 On the basis of discussing on the beam element, the thickness of the plate element t and the inertia I_y as the parameters of sensitivity analysis were discussed to analyze the structure parameterby themethod of the difference sensitivity analysis. The more sensitive parameters were get after analysis, and it can be used to the amending of dynamical optimize. 应用差分灵敏度分析的方法对结构物理参数进行分析，本文仅对板单元的厚度t_p和梁单元的惯性矩I_y进行灵敏度分析，得到灵敏度较高的单元，在此基础上进行结构动力优化。 A rectangular bending plate element based on the reduced bending stiffness theorey is presented in this paper. 本文按照折合弯曲刚度理论,导出了矩形板单元的刚度矩阵。 This paper presents a transfer matrix method for the free vibration of a continuous plate. The transfer matrix of the plate element is derived by analytical method and the globle transfer matrix of a continuous plate is established by applying the principle of transfer matrix method. This method has advantages of simple analysis,less calculation and easy realization in microcomputer. 提出了连续板自由振动的传递矩阵法．用解析法导出了板单元的传递矩阵公式，再运用传递矩阵原理建立起连续板的整体传递矩阵公式．该法具有分析简单、计算量小，可在微型计算机上实现的优点．最后，给出了一些计算结果 A new effective approach has been proposed to formulate thin plate element by using the similarity theory between plane elasticity and plate bending. 应用膜板比拟关系 ,可以避开 c1 连续性的困难 ,为板单元的构造提供了一种新的途径 ,并已成功地构造出一系列相应的板单元。 The harmonious displacement model of arbitrary quadrilateral plate element is used to analyze the arbitrary shape elastic foundation plate in the semi - infinite elastic foundation. 本文将任意四边形板单元的协调位移模式应用于半无限弹性地基上任意形状弹性地基板分析。 Based on tension-compression and bending equivalencies, an equivalent single material plate element was formed for bridge deck of composite girder with steel fiber reinforced concrete and steel. 基于拉压等效与弯曲等效方法,提出了钢纤维混凝土与钢结合梁桥面板换算为单一材料等效板单元的计算模式,导出了等效板单元的厚度和弹性模量的计算式。 In this paper, the real function of the reinforcement is fully considered. The reinforcement is discussed as planar beam element,its axial and resistance bent function are all included. Contribution of stiffness matrix of the reinforcement on the four-node reinforced concrete plate element is deduced. 充分考虑了钢筋混凝土板中钢筋实际发挥的抗弯作用,将钢筋混凝土中的钢筋作为平面梁单元,既考虑了钢筋的轴向作用,也考虑了钢筋的横向作用、抗弯作用,推导得到了钢筋钢筋混凝土板中钢筋对板单元的贡献矩阵,得到了钢筋混凝土四节点板单元的刚度矩阵。 Since the height of weldings is significantly smaller than the size of plate elements in the whole plate element based model of main girder,the calculation results cannot reflect distribution of stress in weldings. 采用板单元的主梁整体模型中焊缝高度尺寸比板单元尺寸小很多,其计算结果不能反映焊缝的应力分布状况。 Based on Smith method, the Simplified Progressive Collapse Method for analyzing ship structure ultimate longitudinal strength is presented by applying beam-column theory, elasto-plastic assumption, plane section assumption and plastic hinge theory. The whole procedure has been coded into a FORTRAN program called SPCM. The bending moment-curvature curve is calculated by integrating the moment of each stiffened plate element to the instant elastic neutral axis of the whole section. 本文基于Smith方法,应用梁-柱理论、理想弹塑性假设、平截面假设和塑性铰理论建立了加筋板单元的应力-应变关系曲线,导出了船体结构总纵极限强度的简化逐步破坏分析方法并编制成FORTRAN计算程序。 This paper put forwords one method to reahze the prepress of plate element by spit the plate element in the space of prepress where the beam element used. 提出通过在板单元里预应力分布位置分割板单元,连接梁单元,在梁单元里面施加预应力来实现板单元的预应力。

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2008 CNKI－中国知网

2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社