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  • 1
    Electronic Resource
    Electronic Resource
    A two-dimensional theory for the analysis of laminated plates (1994)
    Springer
    Computational mechanics 14 (1994), S. 38-51 
    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 new displacement-based two-dimensional theory for the analysis of multilayered plates is presented. The theory is based on the only kinematic constraint of transverse inextensibility, whereas no restrictions are imposed on the representation of the in-plane displacement components. A governing system of integral-differential equations is obtained which can be given a closed-form solution for a number of problems where no boundary layer are present. It is also shown that most of the 2-D plate models can be directly derived from the presented theory. The possibility of developing asymptotic solutions in the boundary layers is discussed with reference to the problem of a plate in cylindrical bending. Finally some numerical solutions are compared with those given by the plate model by Lo et al. (1977) and with F.E.M. solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350156
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Sensitivity analysis for unilateral contact problems: “Boundary” variational formulations and B.E.M. discretisations (1995)
    Springer
    Computational mechanics 15 (1995), S. 287-300 
    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 great interest has been recently devoted to the sensitivity analysis of structures in the presence of unilateral constraints and to its mathematical foundations. The problem has been usually tackled by using classical “domain” variational formulations, such as the ones based on the total potential energy, and its discretisation has been always performed with Finite Element models. On the contrary, this paper aims at proposing a sensitivity analysis based on “boundary” variational formulations and such as to retain most of the mathematical results obtained until now. It allows to take advantage of a discretisation carried out with Boundary Element Methods which appear to be more suitable than Finite Element models for this class of problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372268
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Sensitivity analysis for unilateral contact problems: “Boundary” variational formulations and B.E.M. discretisations (1995)
    Springer
    Computational mechanics 15 (1995), S. 287-300 
    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 great interest has been recently devoted to the sensitivity analysis of structures in the presence of unilateral constraints and to its mathematical foundations. The problem has been usually tackled by using classical “domain” variational formulations, such as the ones based on the total potential energy, and its discretisation has been always performed with Finite Element models. On the contrary, this paper aims at proposing a sensitivity analysis based on boundary” variational formulations and such as to retain most of the mathematical results obtained until now. It allows to take advantage of a discretisation carried out with Boundary Element Methods which appear to be more suitable than Finite Element models for this class of problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050020
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Boundary variational formulations and numerical solution techniques for unilateral contact problems (1990)
    Springer
    Computational mechanics 6 (1990), S. 247-257 
    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 In this paper the numerical solution of the elastic frictionless contact problem is obtained by means of boundary discretization techniques. Variational formulations in terms of boundary tractions are given in presence of both bilateral and unilateral constraints. The discretization of the boundary functional is examined from the point of view of the theory of approximation and it is proved that the coerciveness (but not the symmetry) of the continuum problem is preserved when standard B.E.Ms are employed. As a consequence, the contact problem can be cast as a L.C.P. having, as coefficient matrix, a generally non symmetric P matrix. A simple, but meaningful example is discussed in some detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370105
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Primary progressive aphasia: a patient with stress assignment impairment in reading aloud (2000)
    Springer
    Neurological sciences 21 (2000), S. 39-48 
    Details
    ISSN: 1590-3478
    Keywords: Key words Primary progressive aphasia ; Surface dyslexia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Surface dyslexia is a pattern of reading impairment which has been seldom described in Italian native speakers. We report the case of a female Italian patient, RM, suffering from primary progressive aphasia (PPA) of the fluent type, who presented stress assignment errors in reading aloud. In Italian these errors are considered to be strongly suggestive of surface dyslexia. We studied RM's reading performance in light of existing cognitive models on reading. Since the first assessment, she presented multi-level impairment involving pre-semantic, lexical-semantic and post-semantic stages. Her stress assignment errors have been interpreted as a generalisation of the most frequent tendency in Italian language: namely to assign stress to the penultimate skyllable. In agreement with previous studies, our case suggests that surface dyslexia in PPA is not a monolithic entity but, on the contrary, that it may arise from impairment at various stages of the reading process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100720070117
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    Paper (German National Licenses)
    Fulltext
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