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  • boundary element method  (4)
  • microstructure  (4)
  • Springer  (8)
  • 2000-2004  (1)
  • 1995-1999  (3)
  • 1990-1994  (4)
Collection
Keywords
Publisher
  • Springer  (8)
Years
  • 2000-2004  (1)
  • 1995-1999  (3)
  • 1990-1994  (4)
  • 1985-1989  (1)
Year
  • 1
    Electronic Resource
    Electronic Resource
    The determination of an equivalent elastic modulus for bodies with cracks by boundary element method (1996)
    Springer
    Acta mechanica solida Sinica 9 (1996), S. 210-216 
    Details
    ISSN: 0894-9166
    Keywords: boundary element method ; self-consistent method ; equivalent elastic modulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The equivalent elastic modulus of cracked bodies with orderly distributed cracks was computed with the boundary element method. A practical self-consistent scheme has been proposed in consideration of the mutual interaction effects of the cracks. The influence of friction coefficients and orientation of cracks has been investigated. Some computational examples have been given, and the results show that the proposed method is adequate and the scheme is efficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02208304
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  • 2
    Electronic Resource
    Electronic Resource
    Some applications of boundary element methods, boundary element-finite element coupling techniques in elasto-plastic stress analysis (1990)
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 327-340 
    Details
    ISSN: 0894-9166
    Keywords: boundary element method ; elasticity ; elasto-plasticity ; BE-FE coupling technique ; error estimation of BE solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper some research works of author's group on boundary element method for linear elastic and elasto-plastic problems are briefly summarized. The BE subrogions method and BE-FE coupling techniques are introduced, and some idea of the error estimation of BE solutions is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02206402
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  • 3
    Electronic Resource
    Electronic Resource
    A numerical method for Cauchy principal value of singular integral under parametric transformation in BEM (1991)
    Springer
    Acta mechanica solida Sinica 4 (1991), S. 39-47 
    Details
    ISSN: 0894-9166
    Keywords: singular integral ; boundary element method ; isoparametric element ; finite part of singular integration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A numerical method for the Cauchy principal value of the singular integral in BEM is developed using the concept of finite part integration under integral variable transformation. It is applied to the numerical integration on isoparametric element successfully, as shown in the examples in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02208109
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  • 4
    Electronic Resource
    Electronic Resource
    High-Pressure Processing and Characterization of Fe–High-C/N Alloys (1998)
    Springer
    Journal of materials synthesis and processing 6 (1998), S. 147-154 
    Details
    ISSN: 1573-4870
    Keywords: High-pressure melting ; iron–carbon–nitrogen steels ; microstructure ; compression strength
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new process has been developed that results in (i) enhanced nitrogen addition to ferritic iron–carbon alloys and (ii) melt-casting in a single operation. This new processing technique enables Fe–C alloys to retain high nitrogen interstitial concentrations and to reduce significantly, and possibly eliminate, carbide formation. In this study two commercial-grade, steel alloys were cast under elevated nitrogen pressures, resulting in solid solution (austenite, ferrite, and martensite) high-carbon and high-nitrogen iron alloys that were, within detection limits, carbide- and nitride-free. These alloys were subsequently thermally processed to transform part of the retained austenite to martensite. The microstructure and mechanical properties of the alloys were studied as a function of carbon and nitrogen composition and as a function of thermal processing. The retain high nitrogen concentrations in these cast and processed iron–carbon alloys resulted in a substantial improvement in compression strengths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022651620806
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation, Microstructure and Photocatalytic Activity of the Porous TiO2 Anatase Coating by Sol-Gel Processing (2000)
    Springer
    Journal of sol gel science and technology 17 (2000), S. 163-171 
    Details
    ISSN: 1573-4846
    Keywords: sol-gel processing ; porous titania coatings ; microstructure ; photocatalytic degradation ; organophosphorous insecticide ; sunlight
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In this study the porous TiO2 anatase coatings are prepared from alkoxide solutions containing polyethylene glycol (PEG) by a dip-coating technique. The effects of PEG addition to the precursor solution on the photocatalytic activity and microstructure of the resultant coatings are studied. The larger amount and the larger molecular weight of PEG, the larger size and more pores produced in the resultant coatings on the decomposition of PEG during heat-treatment. The adsorbed hydroxyl content of such porous coatings is found to increase due to the larger size and more pores in the coatings. However, the transmittance of the coatings decreases due to the scattering by the larger size and more pores. Photocatalytic degradation experiments show that organophosphorous insecticide, dimethyl-2,2-dichlorovinyl phosphate (DDVP), was efficiently degraded in the presence of the porous TiO2 coatings by exposing the DDVP solution to sunlight. Photocatalytic degradation rate was related to the adsorbed hydroxyl content, transmittance and morphology of the resultant coatings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008703719929
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  • 6
    Electronic Resource
    Electronic Resource
    Effective elastic moduli of an inhomogeneous medium with cracks (1995)
    Springer
    Acta mechanica Sinica 11 (1995), S. 153-161 
    Details
    ISSN: 1614-3116
    Keywords: microcrack ; microstructure ; interaction between cracks ; effective elastic moduli
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In the present paper, the effective elastic moduli of an inhomogeneous medium with cracks are derived and obtained by taking into account its microstructural properties which involve the shape, size and distribution of cracks and the interaction between cracks. Numerical results for the periodic microstructure of different dimensions are presented. From the results obtained, it can be found that the distribution of cracks has a significant effect on the effective elastic moduli of the material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02487623
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  • 7
    Electronic Resource
    Electronic Resource
    Prediction of the overall moduli of a cylindrical short-fiber reinforced composite (1993)
    Springer
    Acta mechanica Sinica 9 (1993), S. 53-60 
    Details
    ISSN: 1614-3116
    Keywords: microstructure ; cylindrical inclusion ; effective elastic moduli
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract With respect to obtaining the effective elastic moduli of the composite, the present theory differs from both Eshelby's equivalent inclusion method and Hill's self-consistent one, both of which only consider the mechanical properties of the matrix and inclusions (fibers). In fact, the inclusion-inclusion interaction is more pronounced when the volume fraction of inclusions of the composite increases. Hence, in this paper the effective elastic moduli of the composite are derived by taking into account the shapes, sizes and distribution of inclusions, and the interactions between inclusions. In addition, it is more convincing to assume short-fibers as cylindrical inclusions as in the present paper than as ellipsoidal ones as in others[7,8]. Finally, numerical results are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02489162
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  • 8
    Electronic Resource
    Electronic Resource
    Application of an improved boundary element method on the problem of elastic torsion (1992)
    Springer
    Applied mathematics and mechanics 13 (1992), S. 643-648 
    Details
    ISSN: 1573-2754
    Keywords: clastic torsion ; Poisson equation ; boundary element method ; improved boundary element method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract An improved boundary element method has been used in analyzing and calculating the problems of the torsion of a prismatic bar with elliptical cross-section. In this paper the calculated results correspond with the values of boundary element method. However, the quantity of data required by the improved boundary element method is much less than that required by boundary element method, and the calculating time will be greatly reduced. Therefore, the procedure of this paper is an economical and efficient numerical computational way for solving Poisson equation problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456088
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