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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Computational mechanics 22 (1998), S. 26-31 
    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 This paper is concerned with outlining some fundamental solutions and Green's functions for a system of second order linear elliptic partial differential equations in two independent variables. The fundamental solution and a number of Green's functions are given in relatively elementary closed form for some cases when the coefficients in the equations are constant. When the coefficients are variable the fundamental solution is obtained for some particular classes of equations.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of elasticity 6 (1976), S. 137-147 
    ISSN: 1573-2681
    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: Zusammenfassung Einige Grundgleichungen, die Clements neulich abgeleitet hat, dienen als Grundlage, um zwei Kontaktprobleme in der anisotropischen Thermoelastizität zu betrachten. Im ersten Problem geht es darum, die Wärmespannung in einem anisotropischen Halbraum zu bestimmen, die von einer erhitzten Last über einem Teil der Grenzlinie hervorgebracht wird. Im zweiten Problem geht es darum, einen Halbraum durch eine erhitzte starre Punze auszuzacken. Insbesondere wird das Auszacken durch eine kreisartize Punze betrachtet, und es ergeben sich numerische Angaben.
    Notes: Abstract Some basic equations recently derived by Clements are used to consider two contact problems in anisotropic thermoelasticity. The first problem concerns the determination of the thermal stress in an anisotropic half-space due to a heated load over a section of the boundary. The second problem concerns the indentation of a half-space by a heated rigid punch. In particular, indentation by a cylindrical punch is considered and some numerical results obtained.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of elasticity 6 (1976), S. 327-329 
    ISSN: 1573-2681
    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 system of equations governing antiplane deformations of inhomogeneous elastic media is examined with a view to achieving its reduction to a canonical form associated with the Cauchy-Riemann system.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of elasticity 7 (1977), S. 171-184 
    ISSN: 1573-2681
    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: Zusammenfassung Es werden die zeitlich vorübergehenden Verrückungen und Spannungsänderungen in dicken inhomgenen zylinder-und kugelförmigen Schalen für den Fall untersucht, dass die Oberfläche dynamischen Belastungen ausgesetzt ist, die strahlenförmige Schwingungen produzieren. Zunächst werden Tranformationen der auftretended Gleichungen gesucht, die eine Lösung mit Hilfe von endlichen Hankeltransformations-Techniken zulassen. Eine solche Reduzierung ist für eine grosse Klasse von abstandsabhängigen Veränderungen der Dichte-und Elastizitätsparameter \:moglich. Die so erhaltenen Lösungen sind jedoch recht kompliziert, und zwei weitere Lösungsmöglichkeiten werden angedeutet. Einmal erhält man unter gewissen Beschränkungen bezüglich der Art der Inhomogenitäten eine Reduzierung des Gleichungssystems auf die gewögnliche Wellengleichung, zum anderen wird ein einfaches Korrespondensprinzip für das betrachtete Randwertproblem aufgestellt. Schliesslich wird eine asymptotische Wellenfrontanalyse entwickelt, die vielseitig verwendbar ist.
    Notes: Summary Transient displacement and stress in thick inhomogeneous cylindrical and spherical shells is investigated for situations when the surfaces are subjected to dynamic loads consistent with the production of radial vibrations. In the first instance, transformation of the governing equations is sought to a form amenable to solution via a finite Hankel transform technique. Such reduction is available for a broad class of radial variations in the material density and elastic parameters. However, the solutions generated by this method are rather involved and two other approaches are indicated. Thus, reduction of the system to the conventional wave equation is obtained under certain restrictions on the nature of the inhomogeneities and a simple correspondence principle is presented for the imposed boundary stress boundary value problem. Finally an asymptotic wave front analysis is presented which has a wide generality of application.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of engineering mathematics 20 (1986), S. 145-161 
    ISSN: 1573-2703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Technology
    Notes: Summary Bergman-type series solutions involving iterated complementary error integrals are constructed for nonlinear boundary-value problems associated with heat conduction in a region bounded internally by a cylindrical or spherical surface. In particular, a small-time solution is developed when the nonlinear boundary condition is of the Stefan-Boltzmann type. This solution is extended via Padé approximants.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 29 (1978), S. 199-211 
    ISSN: 1619-6937
    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: Zusammenfassung Diese Arbeit behandelt einige antiplane Rißprobleme, in einem elastische Material, mit veränderlichem Schubmodul. Für jeden betrachteten Riß wird ein Ausdruck für die Energiefreisetzungsgeschwindigkeit erhalten und ein Vergleich mit der Energiefreisetzungsgeschwindigkeit für den entsprechenden Riß in einem homogene Material angegeben.
    Notes: Summary This paper examines some antiplane crack problems in an elastic material with variable shear modulus. An expression for the energy release rate is obtained for each of the cracks considered and a comparison made with the energy release rate for the corresponding crack in a homogeneous material.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 56 (1985), S. 31-40 
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary An examination of possible forms of traction free surface wave in anisotropic elastic materials is undertaken. The results yield some interesting features of a certain arbitrariness which exists in displacement waves on a traction free surface in anisotropic media.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 32 (1979), S. 55-61 
    ISSN: 1619-6937
    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: Zusammenfassung Die Deformation einer anisotropen, elastischen Platte, die einen spannungsfreien Riß enthält, wird untersucht. Die Plattenflächen sind durch Flächenzuglasten beansprucht, die eine beliebige Verteilung in einer Richtung aufweisen. Das Problem wird reduziert auf zwei Sätze von drei simultanen Fredholm-Gleichungen, die numerisch gelöst werden können. Numerische Ergebnisse werden erhalten für orthotrope Platten mit verschiedenem Verhältnis von Rißlänge zu Plattendicke.
    Notes: Summary The deformation of an anisotropic elastic slab containing a stress-free crack is investigated. Each face of the slab is subject to surface tractions which have an arbitrary variation in one direction. The problem is reduced to two sets of three simultaneous Fredholm equations which can be solved numerically. Numerical results are obtained for orthotropic slabs having various ratios of crack length to slab thickness.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 22 (1975), S. 1-9 
    ISSN: 1619-6937
    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: Zusammenfassung Ein die Wellenausbreitung in elastischen Rohren beschreibendes Gleichungssystem wird dahingehend untersucht, um es auf eine mit der klassischen Wellengleichung verknüpfte kanonische Form zu reduzieren. Zwei spezielle Lösungen werden angegeben und diese dann bei der Untersuchung eines speziellen Randwertproblems verwendet.
    Notes: Summary A system of equations descriptive of wave propagation in fluid-filled elastic tubes is examined with a view to achieving its reduction to a canonical form associated with the conventional wave equation. Two specific solutions are displayed and these are then used to consider a specific boundary value problem.
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  • 10
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 23 (1986), S. 1727-1737 
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A boundary integral procedure is obtained for examining the effect of a finite number of holes on the crack tip stress intensity factors for a plane crack in a homogeneous anisotropic elastic material. Numerical results for specific examples involving a transversely isotropic material are given.
    Additional Material: 4 Ill.
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