Titlebook: Boundary Element Method in Geomechanics; W. S. Venturini Book 1983 Springer-Verlag Berlin Heidelberg 1983 Bodenmechanik.Boundary.Integralv

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Elasto/Viscoplastic Boundary Element Approach,stic responses. As in finite elements, the technique can be also extended to solve problems with pure plastic behaviour. Finally, the applications presented in the last section of this chapter show the accuracy of the approach when it is used to model time-dependent behaviour or to simulate plastic responses with or without anisotropic effects.

GEAR

Boundary Integral Equations,nly important to take into account temperature or other similar loads, but also to model nonlinear material behaviour when used in conjunction with a well established successive elastic solution technique.

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Discontinuity Problems, those of intact rocks (103). In order to model such material weaknesses the shear strength parallel to the schistosity is assumed to be governed by a simple Coulomb criterion of failure. Also the tensile stress in the direction orthogonal to the schistosity plane can be limited by the tensile strength value which is usually assumed to be zero.

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Boundary Element Technique for Plasticity Problems,pute the plastic solution is based on the initial stress process proposed by Zienkiewicz (42) for finite element formulation. The procedure has been implemented to handle four well established yield criteria (Mohr-Coulomb, Drucker-Prager, von Mises and Tresca).

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Material Behaviour and Numerical Techniques,onic computer science in the sixties, the finite element method has been the most common technique to analyse stress distributions and deformation patterns in tunnel excavations, embankments, dams, building foundations and other geomechanical problems.

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Boundary Integral Equations,efly reviewing the partial differential equations for linear elastic material and introducing the necessary notations involved in the formulation. These governing equations are also extended to deal with problems in which initial stress and strain type loads are applied. Such kind of loads are not o

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No-Tension Boundary Elements,he no-tension criterion appears to be one of the first departures from linear elastic theory used to model rock behaviour. In order to justify the choice of this criterion some aspects of rocks and rock masses are discussed, and the inability of these materials to sustain tensile stresses is emphasi

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acrobat

Boundary Element Technique for Plasticity Problems,chapter starts by reviewing the essential features of the one-dimensional elastoplastic analysis, followed by generalization of the plasticity concepts to continuum problems. Stress-strain relationships for post yield conditions are formulated for the boundary element technique. The procedure to com