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  • 1
    Electronic Resource
    Electronic Resource
    Short-crested wave-induced soil response in a porous seabed of infinite thickness (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 17 (1993), S. 553-576 
    Details
    ISSN: 0363-9061
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: Waves reflecting obliquely from structures establish short-crested waves which are conducive to scour of the bed adjacent to them. The pore pressures and effective stresses induced by this wave system are derived analytically for an unsaturated, anisotropic soil matrix of infinite depth in a three-dimensional domain. Verification is available by the solutions being readily reduced to the two-dimensional cases of the progressive and standing wave, for which some closed-form solutions are available. It is shown that wave obliquity is coupled with soil permeability. The effects of wave obliquity, relative water depth, soil stiffness and soil permeability on wave-induced pore pressure are discussed in detail.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nag.1610170803
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  • 2
    Electronic Resource
    Electronic Resource
    Explicit time-domain transmitting boundary for dam-reservoir interaction analysis (1993)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 36 (1993), S. 1789-1804 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: An explicit time-domain transmitting boundary for the analysis of dam-reservoir interactions is presented. This transmitting boundary is a semi-analytical solution of the governing wave equation of the far field of the reservoir. By using this transmitting boundary, the radiation condition and water compressibility can readily be incorporated in the time-domain analysis of dam-reservoir systems. Therefore, the finite element method can be used to accurately analyse a dam-reservoir system including the semi-infinite reservoir while maintaining its efficiency in time-domain analysis. Numerical results have excellent agreement with the available analytical solution. Results also show that the proposed explicit transmitting boundary is more efficient computationally than the implicit transmitting boundary presented by Tsai and Lee.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620361102
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  • 3
    Electronic Resource
    Electronic Resource
    FINITE ELEMENT FORMULATIONS FOR FRICTION PENDULUM SEISMIC ISOLATION BEARINGS (1997)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 40 (1997), S. 29-49 
    Details
    ISSN: 0029-5981
    Keywords: base isolation ; earthquake ; friction pendulum system ; passive control ; seismic analysis ; non linear analysis ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: In this paper, an advanced analytical model and finite element formulations including local bending moment effects for the Friction Pendulum System (FPS) are presented. Some important findings in these investigations reveal that local bending moments which result from the movements of the isolator, should be accounted for in the engineering design. The results presented in this paper show that if the effects of local bending moments are excluded from design considerations, it may endanger structures during earthquakes. The new formulations considering local effects provide an effective tool to simulate the behaviour of FPS-isolated structures subjected to earthquake loadings. The proposed formulations can be applied directly for both two- and three-dimensional analyses without any further assumption. It is easy to implement the proposed techniques in existing finite element programs. The results obtained from the numerical analyses suggest that the local bending moment effects are of significant importance, and should be taken into account to assure the safety of isolated structures during earthquakes. © 1997 by John Wiley & Sons, Ltd.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
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