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  • 1
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    Advances in Adaptive Computational Methods (1998)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 47, no. 22, pp. 65-70, (ISBN 3-7643-0253-4)
    Details
    Publication Date: 1998
    Keywords: Modelling ; Finite Element Method ; Elasticity ; Error analysis ; Acoustics
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
    Electronic Resource
    Electronic Resource
    Model validation in the presence of uncertain experimental data (2004)
    Bradford : Emerald
    Engineering computations 21 (2004), S. 808-833 
    Details
    ISSN: 0264-4401
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: In this paper, we discuss the application of the constitutive relation error (CRE) to model updating and validation in the context of uncertain measurements. First, a parallel is drawn between the CRE method and a general theory for inverse problems proposed by Tarantola. Then, an extension of the classical CRE method considering uncertain measurements is proposed. It is shown that the proposed mechanics-based approach for model validation is very effective in filtering noise in the experimental data. The method is applied to an industrial structure, the SYLDA5, which is a satellite support for Ariane5. The results demonstrate the robustness of the method in actual industrial situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02644400410554335
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A modular approach to structure assembly computations: application to contact problems (1996)
    Bradford : Emerald
    Engineering computations 13 (1996), S. 15-32 
    Details
    ISSN: 0264-4401
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: Presents a modular method for obtaining either a quick or a precise calculation for three-dimensional structure assemblies with local non-linearities, such as unilateral contact with friction, or technological components, such as prestressed bolt joints. An iterative method, including a domain-decomposition technique, is proposed to solve such quasi-static problems in small perturbations. Two types of entities are introduced: sub-structures and interfaces. A local and a global stage are successively carried out by an iterative algorithm until convergence. The linear problem in the global stage is solved by a FEM (3D case) or by another approach using Trefftz functions (2D axisymmetrical case). Applications developed with AÉROSPATIALE-Les Mureaux are presented and concern the study of structure joints with different types of flanges.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02644409610110976
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The variational theory of complex rays for the calculation of medium-frequency vibrations (2001)
    Bradford : Emerald
    Engineering computations 18 (2001), S. 193-214 
    Details
    ISSN: 0264-4401
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: A new approach called the "variational theory of complex rays" (VTCR) is developed for calculating the vibrations of weakly damped elastic structures in the medium-frequency range. Here, the emphasis is put on the most fundamental aspects. The effective quantities (elastic energy, vibration intensity, etc.) are evaluated after solving a small system of equations which does not derive from a finite element discretization of the structure. Numerical examples related to plates show the appeal and the possibilities of the VTCR.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02644400110365879
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Large scale applications on parallel computers of a mixed domain decomposition method (1997)
    Springer
    Computational mechanics 19 (1997), S. 253-263 
    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 strategy using a mixed domain decomposition technique is discussed in the case of problems involving a large number of degrees of freedom. The implementation, on parallel computers, of this “mechanical” strategy which splits the structure into substructures and interfaces is presented. Several industrial-type examples, in the case of elastic behaviour and frictional contact, show the interesting features and the capabilities of such an approach. The numerical behaviour on different computers of the iterative procedure and comparisons with the direct resolution method are also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050174
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A damage computational approach for composites: Basic aspects and micromechanical relations (1995)
    Springer
    Computational mechanics 17 (1995), S. 142-150 
    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 basic aspects of a damage mechanics approach for composites, capable of simulating complete fracture phenomena, are presented. First, for two material examples, ceramic composites and laminate composites, modelling difficulties and state-of-art modelling are outlined. Damage models with delay effects combined with a dynamic analysis are then introduced. Their possibilities are illustrated on one-dimensional bar problems. More complex examples, computed with a F. E. code specific to laminate damage analysis, are also highligted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00356486
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    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A damage computational approach for composites: Basic aspects and micromechanical relations (1995)
    Springer
    Computational mechanics 17 (1995), S. 142-150 
    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 basic aspects of a damage mechanics approach for composites, capable of simulating complete fracture phenomena, are presented. First, for two material examples, ceramic composites and laminate composites, modelling difficulties and state-of-art modelling are outlined. Damage models with delay effects combined with a dynamic analysis are then introduced. Their possibilities are illustrated on one-dimensional bar problems. More complex examples, computed with a F. E code specific to laminate damage analysis, are also highligted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00356486
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    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Majorations de la constante de poincaré relative au problème de la membrane-domaines étoilés (1978)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 29 (1978), S. 670-683 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Résumé Des nouvelles majorations de la constante de Poincaré sont établies pour des domaines étoilés. Cette constante est l'inverse de la fréquence fondamentale pour le problème de la membrane.
    Notes: Summary New bounds of Poincaré constant are given for starshaped regions. This constant is the inverse of the fundamental frequency for the free membrane problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01601492
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Majorations de constantes de Steklov (1978)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 29 (1978), S. 684-692 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Résumé Des majorations pour des constantes de Steklov sont établies. Sont considérés l'opérateur laplacien et l'opérateur type de l'élasticité. La méthode utilise comme intermédiaire des majorations de constantes de Poincaré.
    Notes: Summary Bounds for Steklov constants are given. One considers the Laplacian operator and the typical operator in elasticity. Results are obtained through bounds of Poincaré constants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01601493
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  • 10
    Electronic Resource
    Electronic Resource
    A new approach in non-linear mechanics: The large time increment method (1990)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 29 (1990), S. 647-663 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A new algorithm family taking into account the entire loading process in a single large time increment is proposed to compute structures with physical non-linearities and is tested on some examples in elastoplasticity. The method considerably reduces the number of transfers between local and global levels, hence the numerical cost of calculation is also diminished.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620290312
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    Paper (German National Licenses)
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