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空间杆单元
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  space bar element
     To meet the needs for finite element analysis, in an updated Langrangian framework, the geometric nonlinear tangent stiffness matrixes of the space bar element and space beam-column element, the revising matrix to allow for the eccentric connection, the plastic reducing matrix for the material nonlinearity, and the mass matrixes are all derived.
     本文根据有限元分析的需要,采用Updated Lagrangian方法表述,推导了空间杆单元和梁单元的几何非线性切线刚度矩阵、偏心连接修正矩阵、材料非线性的塑性折减矩阵和质量矩阵。
短句来源
     The eigenvalue and the eigenvectors are analyzed using the Block Lanczos method with the rigid-pin-joint model in which the space beam element is used in the single-layer part and the space bar element is used in the double-layer part.
     本文采用刚铰接模型,即单层部分采用空间梁单元、双层部分采用空间杆单元,应用BlockLanczos方法对该种网壳结构进行了特征值屈曲分析;
短句来源
     A 3D dynamic finite element method with stitching threads is described by the space bar element and combined with experiment work to study the damages of the stitched composites induced by the low-velocity impact in this paper.
     通过三维动力学有限元法,采用空间杆单元来描述缝线,结合试验系统地研究了缝合复合材料的低速冲击损伤问题。
短句来源
  “空间杆单元”译为未确定词的双语例句
     4 Basing on the theory of separate model for coupled method, 3-D spar element with initial stress is utilized to simulated prestressed cable.
     (4) 提出一种新的分析预应力结构的模型:使用有初应力的空间杆单元来模拟预应力束,以独立建模耦合法为理论基础,建立体—杆耦合模型。
短句来源
     Deduction of nonlinear bar-unit stiffness matrix on special-shaped columns
     异形柱非线性空间杆单元刚度矩阵的推导
短句来源
     Based on the finite-deformation theory of continuum mechanics, the stiffness matrix of steel space frame was derived. And by using Kishi-Chen power model to describe the nonlinear behavior of semi-rigid connections, the stiffness matrix for semi-rigid space frame was deducted.
     基于连续介质力学有限变形理论推导了空间钢框架几何刚度矩阵,采用Kishi Chen幂函数模型描述半刚性连接特性,导得了半刚性连接空间杆单元几何刚度矩阵,并编制了二阶弹性分析程序,对空间钢框架在弹性阶段的性能进行了研究.
短句来源
     The element of friction energy dissipation braces is composed of bracing bars and steel plate-rubber friction energy dissipation device. The brace element can be assumed as space bar and the element of friction energy dissipation device can be assumed as plan stress rectangle element.
     钢筋砼摩擦耗能支撑单元由支撑杆单元和钢板—橡胶摩擦耗能器单元组成 ,支撑单元可取空间杆单元 ,摩擦耗能器单元为平面应力矩形单元。
短句来源
     The spatial bar element and spatial beam element was adopted to describe the mechanical models of the members of reticulated structure and tower columns respectively.
     采用空间杆单元和空间梁单元分别构建网壳杆件和塔柱构件的力学模型;
短句来源
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  相似匹配句对
     ELEMENT STIFFNESS MATRIX OF SPATIAL ARCHED RODS
     空间圆弧单元刚度矩阵
短句来源
     The study of the spatial cable element
     空间单元研究
     Deduction of nonlinear bar-unit stiffness matrix on special-shaped columns
     异形柱非线性空间单元刚度矩阵的推导
短句来源
     SPACE
     空间
短句来源
     Research on reinforce-concrete space element
     钢筋混凝土空间单元研究
短句来源
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In this paper, a forced displacement method for the calculation of internal force influence surface of plate and beam in space structure is developed on the basis of E. Betti's energy principle . In order to use finite element method, the method to compute equivalent node force of space beam element when forced strain of beam element cecurs at both end is introduced.In the concept of "forced strain box" , a series of formulae for the calculation of equivalent node force of plate element when single forced strain...

In this paper, a forced displacement method for the calculation of internal force influence surface of plate and beam in space structure is developed on the basis of E. Betti's energy principle . In order to use finite element method, the method to compute equivalent node force of space beam element when forced strain of beam element cecurs at both end is introduced.In the concept of "forced strain box" , a series of formulae for the calculation of equivalent node force of plate element when single forced strain in the direction of internal force occurs in "forced strain box" is derived. The problem of thickening influence surface is discussed. The calculation of internal force influence surface of space structure is realized by finite element method.

本文以弹性体功的互等原理为基础,提出了用强迫变位法计算空间结构中板、梁内力影响面的基本原理。文中给出了空间杆单元杆端发生单位强迫变形时单元等效节点力的计算方法;在薄板计算中引入了强迫应变盒的概念,导出了应变盒在某力素方向上发生单位面积强迫应变时单元的等效节点力计算公式,还对影响面坐标加密等问题作了讨论,实现了空间结构内力影响面的有限元计算。

According to structural properties of new type inverse tensional arch cable-bridge and the large deformational nature of bridge,We propose mixed finite element method combining quadratic crrve ele- ment,straight beam element and space rod element in one modal.Stiffness matrices of quadratic curve el- ement,beam element and element expressed node's of node's displacements among three kinds of element and obtain finite element kinetic equations using Reissner's generalized variational principle.The finite el-...

According to structural properties of new type inverse tensional arch cable-bridge and the large deformational nature of bridge,We propose mixed finite element method combining quadratic crrve ele- ment,straight beam element and space rod element in one modal.Stiffness matrices of quadratic curve el- ement,beam element and element expressed node's of node's displacements among three kinds of element and obtain finite element kinetic equations using Reissner's generalized variational principle.The finite el- ement equilibrium equations are solved with Nowton-Raphson scheme.Calculating results of real exam- ple are good coincide eith experimental results,It is show that the method is correct and usable.

结合新型倒张拱索桥结构特点,考虑索桥非线性大变形性质,提出三节点二次曲线元,直梁单元和杆单元共存的混合单元有限元模式,从结构整体上模拟索桥.由 Reissner 广义变分原理导出曲线元,梁单元的刚度矩阵,并得到用节点坐标表示的大位移空间杆的单元刚度矩阵,实现了索、梁、杆单元的位移协调,得到整体规模下的有限元运动方程.用 Newton-Raphson 方法求解静力问题.实例的计算结果与实测值对比吻合较好,表明方法是正确和可行的.

Abstract The geometrically nonlinear stability analysis of the cylindrical reticulated shell is studied in detail,and so a tangent stiffness matrix applicable to the space bar element in elastic large-displacement analysis isestablished by use of a zero-displacement increment norm method to trace and analyse the geometrical nonlin-ear behaviours of a structure,and a geometrically nonlinear finite element computer program is also compiledin this paper. By computing and analysing several examples and single/double...

Abstract The geometrically nonlinear stability analysis of the cylindrical reticulated shell is studied in detail,and so a tangent stiffness matrix applicable to the space bar element in elastic large-displacement analysis isestablished by use of a zero-displacement increment norm method to trace and analyse the geometrical nonlin-ear behaviours of a structure,and a geometrically nonlinear finite element computer program is also compiledin this paper. By computing and analysing several examples and single/double layer cylindrical reticulatedshells,the reliabity and accuracy of the given theory are verified,and some useful conclusions are obtained.

本文对柱面网壳结构的非线性受力性能进行了详细的研究。为此,推导了适合于弹性大位移分析的空间杆单元的切线刚度矩阵,采用零位移增量范数法对结构变形进行全过程跟踪分析,并编制了相应的计算程序。通过对若干考题及单、双层柱面网壳的计算分析,验证了本文理论的正确可靠,得到了一些有价值的结论。

 
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