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  • 1
    Book
    Book
    Mesh free methods : Moving beyond the finite element method (2003)
    Boca Raton u.a. :CRC Press,
    Details
    Title: Mesh free methods : Moving beyond the finite element method
    Author: Liu, G. R.
    Publisher: Boca Raton u.a. :CRC Press,
    Year of publication: 2003
    Pages: 692 S.
    Type of Medium: Book
    Language: German
    Library Location Call Number Volume/Issue/Year Availability
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    ZIB Catalog
    Zuse Institute Berlin get availability status
  • 2
    Electronic Resource
    Electronic Resource
    High quality superconducting thin films by sputtering
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 185-189 (1991), S. 1953-1954 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(91)91101-9
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Coupling of element free Galerkin and hybrid boundary element methods using modified variational formulation (2000)
    Springer
    Computational mechanics 26 (2000), S. 166-173 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  A novel method is proposed by coupling the element free Galerkin (EFG) and the hybrid boundary element (HBE) methods to achieve solution efficiency and accuracy for stress analysis in solids. A modified variational formulation is derived for the present coupled EFG/HBE method so that the continuity and compatibility can be preserved on the interface between the domains of EFG and HBE. The coupled EFG/HBE method has been coded in FORTRAN. The validity and efficiency of the proposed method are demonstrated through a number of example problems. It is found that the present method can take advantages of both EFG and HBE methods. The present method is very easy to implement, and very flexible for obtaining displacements and stresses of desired accuracy in solids, as the efforts for meshing the problem domain have been significantly reduced due to the use of boundary element method (BEM).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660000164
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Meshless local Petrov–Galerkin (MLPG) method in combination with finite element and boundary element approaches (2000)
    Springer
    Computational mechanics 26 (2000), S. 536-546 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The meshless local Petrov–Galerkin (MLPG) method is an effective truly meshless method for solving partial differential equations using moving least squares (MLS) interpolants. It is, however, computationally expensive for some problems. A coupled MLPG/finite element (FE) method and a coupled MLPG/boundary element (BE) method are proposed in this paper to improve the solution efficiency. A procedure is developed for the coupled MLPG/FE method and the coupled MLPG/BE method so that the continuity and compatibility are preserved on the interface of the two domains where the MLPG and FE or BE methods are applied. The validity and efficiency of the MLPG/FE and MLPG/BE methods are demonstrated through a number of examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660000203
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A Differential Quadrature as a numerical method to solve differential equations (1999)
    Springer
    Computational mechanics 24 (1999), S. 197-205 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A Differential Quadrature proposed here can be used to solve boundary-value and initial-value differential equations with a linear or nonlinear nature. Unlike the classic Differential Quadrature Method (DQM), the newly proposed Differential Quadrature chooses the function values and some derivatives wherever necessary as independent variables. Therefore, the δ-type grid arrangement used in the classic DQM is exempt while applying the boundary conditions exactly. Most importantly, the explicit weighting coefficients can be obtained using the proposed procedures. The present method is used to solve two types of differential equations which are the single-span Bernoulli–Euler beam's buckling equation and the one-degree-of-freedom solid dynamic equation. Excellent results were obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050452
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A stochastic finite element method for fatigue reliability analysis of gear teeth subjected to bending (1998)
    Springer
    Computational mechanics 21 (1998), S. 253-261 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A stochastic finite element method (SFEM) is developed for accurate structural reliability analysis. Using the second-order three-moment reliability analytical model, this method takes into account such random factors as load, material parameters and especially geometry randomness. The calculation of the bending fatigue strength reliability of a cantilever beam is carried out as a numerical example to verify the present method. Monte-Carlo FEM and SFEM based on the first-order second-moment model are used in the example to compare with the proposed method. By incorporating the fatigue theory of gears, the present method is then used to analyze the bending fatigue strength reliability of a spur gear. The effects of random variables' coefficient of variation and skewness and the gear's correction factor (not random variable) on the gear's reliability are also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050300
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Dynamic design of structures under random excitation (1998)
    Springer
    Computational mechanics 22 (1998), S. 388-394 
    Details
    ISSN: 1432-0924
    Keywords: Key words: dynamic design ; expected number of crossings ; response mean square ; stationary Guassian process ; white noise ; first passage failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An optimum design method to minimize the weight of a linear elastic structural system subjected to random excitations is presented. It is focused on the constraints of the first passage failure and displacement response mean square (RMS) at certain degree of freedoms. Constraints on natural frequencies and bounds of design variables are also considered in the optimization. Both correlated and un-correlated generalized random excitations are considered in the present formulation. The sensitivities of the expected number of crossings as well as the displacement RMS with respect to the design variables are also derived. The present method is applicable to stationary Guassian random excitations. Computational examples show the feasibility and efficiency of the proposed method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050370
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Microstructural study of YBa2Cu3O7/SrTiO3/YBa2Cu3O7 heteroepitaxial trilayer films grown on (100) SrTiO3 substrates (1995)
    Springer
    Journal of superconductivity 8 (1995), S. 155-161 
    Details
    ISSN: 1572-9605
    Keywords: Microstructure ; YBa2Cu3O7/SrTiO3/YBa2Cu3O7 ; trilayer ; thin film
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Detailed transmission electron microscopic study has been carried out on heteroepitaxial YBa2Cu3O7/SrTiO3/YBa2Cu3O7 trilayer thin films grown on (100)SrTiO3 substrates prepared by DC and RF magnetron sputtering. The microstructural results showed the existence of somea-axis-oriented YBCO grains 20–90 nm wide in thec-axis-oriented YBCO matrix. Some of thea-axis grains in the lower YBCO thin film layer have protruded into the above SrTiO3 layer, which may cause short circuit between the two YBCO superconducting layers. This is unsuitable for the application of trilayer thin films for microelectronic devices. The defects on the surface of the substrates would also influence the growth quality of the YBCO thin films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00732258
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    Paper (German National Licenses)
    Fulltext
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