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10 April 2002, Volume 24 Issue 2
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    Education Study
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2000-229
    Abstract ( 1086 )   PDF (307KB) ( 465 )  
    In this paper, the fractional differentiation solution of Stokes' first problem based on Heaviside symbolic operator method is presented. It can be transformed to the solution based on similarity method. This is a perfect example to show the clearness, brevity and uniformity of mathematics in fluid mechanics.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2000-406
    Abstract ( 993 )   PDF (216KB) ( 557 )  
    In this paper, an algorithm of optimization for space trusses is given. It is easy and efficient. As compared to the GPS method and the Conjugated Gradient Projection Method presented by Goldfarb, the scope of application and the efficiency of the present algorithm are much improved. Numerical results are satisfactory.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-007
    Abstract ( 1175 )   PDF (244KB) ( 536 )  
    Die swell of Newtonian fluid is studied by means of finite element method and its mesh dependence for die swell is obtained by using variance analyses. The effects of the axial length of the first row elements out of exit and the radial height of the first line elements near wall on die swell are noticeable.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-016
    Abstract ( 1227 )   PDF (134KB) ( 503 )  
    With the basic equations of rotating coating process, the velocity distribution of the flow of a thixotropic fluid on a rotating disk was derived. The equation for thickness of film was obtained by the method of characteristics. The qualitative analysis showed that the decrease of build-up constant and the increase of breakdown constant will accelerate the process of rotating coating.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-017
    Abstract ( 1321 )   PDF (182KB) ( 1114 )  
    A new method is proposed to calculate the natural frequency of horizontal oscillation of a kind of steel railway bridge. The comparison of the results using this method and finite element analysis indicates that the method is simple and valid.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-056
    Abstract ( 937 )   PDF (196KB) ( 635 )  
    In this paper, a nonsymmetric growth model of interfacial crack is presented. The model can reveal the relation between crack growth and the relative energy release rates at the left and right crack tips and the interfacial material property and better characterize the complexity of the interfacial crack growth.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-072
    Abstract ( 1392 )   PDF (258KB) ( 750 )  
    A new method for elastic beam analysis is presented. A general expression for determining deflections and slopes of elastic beams is developed using a method combining singularity functions with Laplace transformations, and the binding forces are determined with boundary condition of the beams. This method can be used for statically determinate beams or statically indeterminate beams with different section shapes, boundary and loading conditions.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-097
    Abstract ( 1323 )   PDF (217KB) ( 653 )  
    Pipelaying is an important operation in offshore engineering. As its governing equation is nonlinear and the boundary is moveable, the analytical solution is difficult to get. In this paper, a singular perturbation method is used to solve this problem. The comparison with FEM shows a good agreement.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-490
    Abstract ( 1190 )   PDF (1165KB) ( 989 )  
    The paper briefly reviews the new research progress of satellite formation flying dynamics and control, and presents some key points for future research.
    2002, 24(2):  0-0.  doi:10.6052/1000-0992-2001-510
    Abstract ( 1206 )   PDF (1186KB) ( 1003 )  
    ALE-FEM (Arbitrary Lagrangian-Eulerian Finite Element Method) can successfully be used in solving problems, such as liquid large-amplitude sloshing, fluid-structure interaction, metal forming, and large-deformation analysis. This paper reviews the research progress of ALE finite element method and its further development.