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空间杆元
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     In this paper,the direct formulas of the tangent stiffness matrixes for space trusses are derived,by virtue of the principle of virtual displacement under the Lagrange coordinate;
     本文利用虚位移原理,采用Lagrange描述方法,推导出了空间杆元的切线刚度矩阵显式;
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     In this paper, the tangent stiffness matrices and the secant stiffness matrices of space trusses are derived with the energy principle in the Total Lagrangian coordinates.
     本文在T.L.坐标下,利用能量原理,同时导出了空间杆元精确的割线刚度矩阵和切线刚度矩阵显式。
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  相似匹配句对
     Finite Element Analysis of Spatially curved Rods
     空间有限分析
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     The Nonlinear Analysis of Finit Element for Space Frames
     空间系结构的有限非线性分析
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     Visualization of FEM analysis data of space pole structure
     空间系结构有限计算结果的可视化
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     Study on Matter-element Space
     物空间初探
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     Computing Method on FEM for Vertical and Horizontal Bending of Spatial Bars
     考虑纵横弯曲的空间系有限计算
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In this paper,the direct formulas of the tangent stiffness matrixes for space trusses are derived,by virtue of the principle of virtual displacement under the Lagrange coordinate;and based on the load-incremental method, the solution for the geometric nonlinear finite element of large deflection for space trusses is achieved. The exactitude of the solution discussed and the reliability of the program are proved by examples.

本文利用虚位移原理,采用Lagrange描述方法,推导出了空间杆元的切线刚度矩阵显式;采用增量荷载法实现了对空间网架结构进行大挠度分析的几何非线性有限元解法,并用算例证明了算法的精度和程序的可靠性。本文方法简单,可在线弹性分析程序的基础上,很容易改过来,为大型网架结构的非线性分析提供了一种有效的方法

In this paper, a method for the analysis of dynamic characteristics of long span steel trussed cable stayed bridges is suggested. The finite element model is developed using finite truss elements to model the truss bridge deck, and space beam elements to model the bridge tower, and space truss elements to model the cablesof cable stayed bridge. Stiffness and mass matrices are calculated based on material and geonetric properties of the various bridge elements. The subspace iteration method is used to calculate...

In this paper, a method for the analysis of dynamic characteristics of long span steel trussed cable stayed bridges is suggested. The finite element model is developed using finite truss elements to model the truss bridge deck, and space beam elements to model the bridge tower, and space truss elements to model the cablesof cable stayed bridge. Stiffness and mass matrices are calculated based on material and geonetric properties of the various bridge elements. The subspace iteration method is used to calculate the eigenprobem. The results provide reference for design.

本文提出一种计算大跨度钢桁梁斜拉桥动力特性的方法。文中分别采用桁段有限单元、空间梁元、空间杆元计算斜拉桥中桁架、桥塔、拉索的刚度矩阵与质量矩阵,采用子空间迭代法求解特征方程,所得结果可供设计参考

In this paper, the tangent stiffness matrices and the secant stiffness matrices of space trusses are derived with the energy principle in the Total Lagrangian coordinates. By means of several approaches, the solution for the geometric nonlinear finite element analysis of space trusses is achieved. The numerical example in this paper shows that the stiffness matrices formulated can be used to analyze geometrically nonlinear problems of space trusses satisfactically.

本文在T.L.坐标下,利用能量原理,同时导出了空间杆元精确的割线刚度矩阵和切线刚度矩阵显式。文中采用几种方法实现了空间桁架大位移分析的几何非线性有限元解法。算例表明,本文导出的两个刚度矩阵可极为有效的分析各类空间桁架的几何非线性问题,且使程序具有极好的调试性

 
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