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- W2591457059 abstract "This paper presents results and observations from the use of a rigorous method of treating the dynamic far-field as part of a non-linear FE analysis. The technique de-veloped by Wolf and Song (referred to as the Scaled Boundary Finite-Element Method) is incorporated into a 3-D time-domain analysis code. The paper concentraten on describ-ing how the SBFE approach has been embedded within the implicit Hilber-Hughes-Taylor time-integration scheme. An element-by-element, GMRES-stabilized pre-conditioned con-jugate gradient iterative method is used to solve the resulting system equations. The paper includes a (FORTRAN 90) listing of the core solver algorithm. The realism of the method is demonstrated by comparing a three element SBFEM anal-ysis with a large 3-D extended FE mesh for the case of a stuff cube embedded in a soft elastic halfspace. A more practical example of including full soil-structure interaction fol-lows using a 3-D non-linear analysis of a concrete containment vessel onder slow impact. Finally, a discussion is given on the benefits which may be realized by taking advantage of any symmetries in the problem when calculating the acceleration unit-impulse response matrices [M]. For example, if a cylindrical cavity is assumed, then only one sector may be modeled when computing the far-field [M°°] matrices. It is noted that, depending upon the manner in which this is implemented, some cross-coupling terms are neglected." @default.
- W2591457059 created "2017-03-03" @default.
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- W2591457059 date "2000-01-01" @default.
- W2591457059 modified "2023-09-27" @default.
- W2591457059 title "Efficient EBE treatment of the dynamic far-field in non-linear FE soil-structure interaction analyses" @default.
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