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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 2551-2556 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A continuum model for composite materials made of short, stiff and tough fibresembedded in a more deformable matrix with distributed microflaws is proposed. Based on thekinematics of a lattice system made of fibres, perceived as rigid inclusions, and of microflaws,represented by slit microcracks, the stress-strain relations of an equivalent multifield continuum isobtained. These relations account for the shape and the orientation of the internal phases andinclude internal scale parameters, which allow taking into account size effects. Some numericalanalyses effected on a sample fibre-reinforced composite pointed out the influence of the size andorientation of the fibres on the gross behaviour of the material
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 426-432 (Aug. 2003), p. 2133-2138 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Meccanica 32 (1997), S. 581-583 
    ISSN: 1572-9648
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Meccanica 31 (1996), S. 421-432 
    ISSN: 1572-9648
    Keywords: Masonry ; Macroscopic characterization ; Continuum mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Sommario Si studia la modellazione continua della muratura a blocchi, considerata come sistema discreto di corpi indeformabili, discutendo le proprietà di due continui equivalenti: un modello di Cosserat e uno di Cauchy. Nell' ambito della elasticità lineare, si forniscono le espressioni delle relazioni costitutive per le azioni di contatto, in funzione delle dimensioni, della forma e della disposizione dei mattoni. Modificando questi parametri geometrici si ottengono materiali equivalenti dotati di particolari vincoli interni. In alcuni rari casi il continuo di Cosserat vincolato si comporta come un continuo di Cauchy. Salvo queste eccezioni, il continuo classico è un modello inadeguato per la muratura a blocchi mentre un continuo dotato di struttura fornisce sempre risultati soddisfacenti.
    Notes: Abstract Continuum modeling for masonry-like material accounting for bricks or blocks texture is discussed. The constitutive functions for the contact actions—expressed in terms of size, shape and arrangement of the block assembly-are derived within the framework of the linear elastic Cosserat and Cauchy theories. By varying some important geometrical parameters: the scale factor between the wall and the blocks size, the shape of the bricks and their arrangement, micropolar materials with particular internal constraints are obtained. In a few situations the constrained continuum behaves as a Cauchy continuum. In general, the Cauchy continuum does not provide a proper description of the brick masonry behaviour while the structured continuum model, accounting for the mutual blocks rotation, gives satisfactory results.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Meccanica 30 (1995), S. 673-683 
    ISSN: 1572-9648
    Keywords: Masonry ; Macroscopic characterization ; Continuum mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Sommario Viene presentato un modello di continuo con struttura atto a descrivere il comportamento meccanico di murature a blocchi, pensate come un sistema di corpi rigidi con contatti puntuali elastici. Il moto del sistema discreto e di quello continuo sono messi in relazione postulando una corrispondenzatra i campi di spostamento. Le funzioni costitutive delle azioni dinamiche del modello continuo sono ricavate uguagliando la potenza meccanica spesa in moti corrispondenti.
    Notes: Abstract A structured continuum model is formulated to describe the behaviour of block masonry modelled as distinct rigid body systems with elastic interfaces. A correspondence between the two motions is obtained by postulating a relationship between the displacement fields of the continuum and the discrete models. The constitutive functions for the dynamic actions of the continuum are derived by equating the power of the two models.
    Type of Medium: Electronic Resource
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