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plate element
相关语句
  板单元
    Refined higher order shear deformation theory and triangular plate element of composite laminates
    复合材料层合板精化高阶理论及其精化三角形板单元
短句来源
    Based on the refined triangular Mindlin plate elements developed by Chen, a new triangular composite stiffened plate element with 21 degrees of freedom has been proposed.
    基于精细三角形Mindlin板单元构造了21个自由度三角形复合材料加筋板壳单元。
短句来源
    GEOMETRICALLY NONLINEAR PLATE ELEMENT FOR ARBITRARILY STIFFENED LAMINATED COMPOSITE PLATES
    复合材料大变形任意加筋板单元
短句来源
    The formulation of sixteen nodded adhesive element,two nodded bolt element and eight nodded isoparametric plate element based on the first order transverse shear effect theory is deduced,which can be used to analyze the laminated shell joint structures by means of the coordinates transformation scheme. Meanwhile the relative coordinate system and modified virtual rotation stiffness techniques are also employed to overcome the ill condition problem of total stiffness matrix of the structures during analysis process successfully.
    推导了十六节点胶单元、二节点钉单元和基于一阶剪切变形理论的八节点等参板单元 ,并通过坐标变换使之用于壳体结构 ,还将相对坐标系内求解法与修正型虚拟的转动刚度法相结合 ,有效地克服了平面单元分析壳体结构所固有的方程病态问题 .
短句来源
    A 4 node plate element based on Mindlin first order shearing theory is presented to analyze delamination front contact effect on pre buckling and post buckling behavior of composite laminates with elliptical delamination damage.
    采用基于 Mindlin一阶剪切理论的四节点板单元 ,分析了分层前缘闭合接触效应对含椭圆分层复合材料层合板前后屈曲行为的影响。
短句来源
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  “plate element”译为未确定词的双语例句
    A new quadrilateral plate element for laminated and sandwich plates
    一种新的四边形层合板与夹层板单元
短句来源
    A new higher-order shear deformation theory based on global-local superposition and refined triangular plate element of composite laminate
    新型整体-局部高阶剪切变形理论及层合板精化三角形单元
短句来源
    Numerical results show that the refined triangular plate element is capable to accurately calculate global displacement and interlaminar stress.
    计算结果表明:建立的精化单元能准确计算整体位移和层间应力。
短句来源
    2. A relevant formula of eight-node adhesive finite element is deduced in the paper, which is based on a separately interpolation scheme for Reissner- Mindlin plate element. A load capability analysis method for patched composite laminated structure is established by using Tsai- Hill failure criterion and Thai's reduced stiffness scheme, and corresponding computer code is also developed.
    2.在任意四边形四节点复合材料层合板壳单元的基础上,推导了相应的八节点胶单元,并采用蔡-希尔强度理论以及蔡氏刚度退化准则,对复合材料层合板胶接补强结构进行刚度分析和极限承载能力分析,编制了相应的有限元分析程序。
短句来源
    A finite element model based on Mindlin's theory is used for the geometriclly nonlinear analysis of laminated stiffened plate. Using the total Lagrangian description the incremental equations and nonlinear stiffness matrix of the isoparametric stiffened plate element are formulated. TheNewton-Raphson iteration procedure combined with the increment method is employed to trace the nonlinear equilibrium path.
    本文将考虑横向剪切变形的Mindlin's理论应用于复合材料加筋板的大变形分析,在Total—Lagrange坐标系下推导了八结点等参弯曲板单元和三结点等参梁单元的增量平衡方程和切线刚度矩阵,非线性问题采用增量法和Newton—Raphson迭代法相结合的方法求解。
短句来源
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  plate element
The first element is a thin-plate element that is based on the Kirchhoff plate assumptions and captures both membrane and bending stiffness effects.
      
The results indicate the differences in the dynamic response of the transverse shear deformable eight-noded element as compared to a four-noded plate element.
      
The development of a shear-deformable laminated plate element, based on the Mindlin plate theory, for use in large reference displacement analysis is presented.
      
An eight noded composite plate element for the dynamic analysis of spatial mechanism systems
      
The results have been included for the first few frequencies of the plate element for all the boundary conditions viz.
      
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In this paper two kinds of elements, triangular laminated plate element with nine degree of freedom based on multi-variable quasi-conforming and penalty element technigue and laminated beam element with six degree of freedom are presented.Effects of transverse shear deformation and rotational inertia are considered in these two elements.Free vibration, damping cha-racteristic and transient response of stiffened composite plate are investigated by using finite element method.Results...

In this paper two kinds of elements, triangular laminated plate element with nine degree of freedom based on multi-variable quasi-conforming and penalty element technigue and laminated beam element with six degree of freedom are presented.Effects of transverse shear deformation and rotational inertia are considered in these two elements.Free vibration, damping cha-racteristic and transient response of stiffened composite plate are investigated by using finite element method.Results obtained are valuable for the designs of stiffened composite plates.tiffened composite plate, Vibration, Damping, Response, Finite element

本文构造了九自由度三角形拟协调罚函数复合材料板单元与六自由度复合材料梁单元,考虑了剪切变形与转动惯量的影响。用这两种单元对复合材料加筋板的自由振动、阻尼特性和瞬态响应问题进行了研究,给出一些有益结果。

A finite element model based on Mindlin's theory is used for the geometriclly nonlinear analysis of laminated stiffened plate.Using the total Lagrangian description the incremental equations and nonlinear stiffness matrix of the isoparametric stiffened plate element are formulated.TheNewton-Raphson iteration procedure combined with the increment method is employed to trace the nonlinear equilibrium path.A variety of numerical examples are presented to demonstrate the precision and convergence of the method.All...

A finite element model based on Mindlin's theory is used for the geometriclly nonlinear analysis of laminated stiffened plate.Using the total Lagrangian description the incremental equations and nonlinear stiffness matrix of the isoparametric stiffened plate element are formulated.TheNewton-Raphson iteration procedure combined with the increment method is employed to trace the nonlinear equilibrium path.A variety of numerical examples are presented to demonstrate the precision and convergence of the method.All the results have a good agreement with those published.The effects of bounday condition, the size of transverse area of stiffener, the distribution of stiffener and the orientation angle of lamina on the geometri-caly nonlinear strength of stiffened composite plates are investigated.

本文将考虑横向剪切变形的Mindlin's理论应用于复合材料加筋板的大变形分析,在Total—Lagrange坐标系下推导了八结点等参弯曲板单元和三结点等参梁单元的增量平衡方程和切线刚度矩阵,非线性问题采用增量法和Newton—Raphson迭代法相结合的方法求解。本文通过一些算例,证明了所采用单元具有良好的收敛性和足够的精度,并讨论了边界条件、纤维铺设角和加筋疏密等因素对复合材加料筋板非线性解的影响。

Based on the theory of linear-elastic fracture mechanics, the crack tip stress field of orthotropic plate is still controlled by the stress-intensity factors, therefore to study the stress-intensity factors of orthotropic plate is an important problem in studying the fracture of composite materials. At present, not a few papers calculate the stress-intensity factors by finite element theory, but few by testing technique.With composite material fracture theory, the paper derives the relation formulas between...

Based on the theory of linear-elastic fracture mechanics, the crack tip stress field of orthotropic plate is still controlled by the stress-intensity factors, therefore to study the stress-intensity factors of orthotropic plate is an important problem in studying the fracture of composite materials. At present, not a few papers calculate the stress-intensity factors by finite element theory, but few by testing technique.With composite material fracture theory, the paper derives the relation formulas between the KI, KII and the v displacement with different fiber-reinforced directions. In this paper, the glass fiber-reinforced orthotropic plate is worked into the pure bending beam with a unilateral cut on it, which is tested by using the sticking film moire interferometry. Through testing, the full-field displacement of the moire pattern is given, the KI and KII values are further calculated from the displacement in the crack-tip. The patterns that the pure bending beam has different crack lengthes and is in different fiber-reinforced directions are given in this paper. Being exposed twice, the grating density of the moire pattern can reach 1260 line/mm. At the same time, the same specimen is calculated by using SAP-84 plate element program on microcomputer for inspecting the testing precision. At last, the test results are compared with the calculating ones in error.All of the testing and calculating results show: a. For isotropic materials, the formula of KI isb. For orthotropic materials, the stress-intensity factor varies with the fiber direction and/or the crack length, and the formula KI iswhere a is the crack length, w is the specimen's height, a is the flexibility matrix coefficient, a is the angle between the crack direction and the fiberreinforced direction.It can be seen from the moire pattern (a = 45°) that the moire pattern isn't symmetric when t e crack line isn't in the principal material direction, even if the structure and the force are symmetric. The displacement of crack tip is in mixed-mode, KI and KII exist simultaneously. From the moire pattern (a=45°), the orthotropic coupling effect is best explained.The test result shows that the sticking film moire interferometry can be not only used to test isotropic mitsrials but also orthotropic ones, therefore, this method can be spread to analyze the fracture of composite materials.

本文运用复合材料断裂理论推导出带单边切口的纯弯梁不同纤维增强方向时v位移分量与K_Ⅰ、K_Ⅱ的关系式。用贴片云纹干涉法与有限元法确定纯弯梁裂纹尖端v位移,从而得出应力强度因子值。文中给出了复合材料纯弯梁不同裂纹长度,不同纤维增强方向时的云纹图,最后将测试结果与有限元计算值进行了误差对比。

 
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