geometrical element
1.The thousand roofs, dense, angular, clinging to each other,composed, nearly all, of the same geometrical element, offered,when viewed from above, the aspect of a crystallization of the same substance.
2.The paper presents how to use the technique of OLE and ARX of AutoCAD tobuild the geometrical model, the finite element model of the given structure visually anduse the template and wizard to build the optimization model of it.
3.Based on CR formulation superposition method for geometrical nonlinear analysis,the catenary cable element was used to simulate stay cable. Nonlinear influence for Sutong Bridge whose main span reaches 1 088 m during construction was studied.
4.(6)The effects of geometrical factors on small punch creep test were analyzed byfinite element analysis.
5.The analysis methods of buckling on piles are introduced briefly and the buckling mechanism of piles is analyzed. The shaft of a pile was regarded as the spatial beam element considered on the geometrical nonlinearity. The equation of the finite element was established by way of the updated Lagrangian formulation.
6.The paper take Chaozhou Institute of Technology Gymnasium as the example, Taking into account of geometrical non-linearity and material non-linearity, the finite element model of BSS is builded in ANSYS8.0, the BSS structure’s reaction behavior at different temperature is simulated through change the parameter and applying the temperature loads, the critical temperature is finded out.
7.Regarding the linear buckling mode as the initial geometrical defect of the structure, the stability nonlinear analysis of composite case under axial pressure was made by means of the finite element method.
8.It was proved that the area coordinates of plane triangle element and the volume coordinates of tetrahedron element are equivalent to the oblique Cartesian coordinates by the analytical and geometrical methods.
9.A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.
10.In this paper, the concept of parameter describing of geometrical elements, include real meas ured elements and logical elements, is proposed, is proposed,all olgical operations between elements are classified into sever al types, and equations are given for the solving of the parameters of the new logical element created by each of these operations,This work settles a foundation for the extension geometrical software of CMMs
