TY - JOUR
A1 - Auersch, Lutz
T1 - Response to harmonic wave excitation of finite or infinite elastic plates on a homogeneous or layered half-space
N2 - The soilstructure interaction of elastic plates on homogeneous or layered soils excited by horizontally propagating waves is analysed. Large plates are modelled by a combined finite-element boundary-element method (FEBEM), whereas the response of infinitely long plates is calculated by a numerical integration in the frequencywavenumber domain. The finite-element boundary-element method yields the complete soilplate transfer function of frequency and distance whereas the frequencywavenumber solution of the infinitely long plate can serve as an approximation for long distances on a finitely long plate. The soilplate transfer function starts to decrease strongly at the coincidence frequency, where the bending stiffness equals the plate inertia. A strong decrease follows at mid frequencies and a strong reduction of less than 0.1 of the ground vibration is reached at high frequencies. Rules for the characteristic frequencies are derived from the numerical results clearly indicating the strongest influence of the soil stiffness and the weaker influence of the bending stiffness of the plate. The influence of the mass, length and width of the plate are shown to be limited in case of realistic parameters, but it should be noted that the reduction effects are less effective for layered soils and for nearer observation points.
KW - Plate-soil interaction
KW - Wave excitation
KW - Flexible plate
KW - Layered soil
KW - Vibration reduction
KW - Finite-element boundary-element method
KW - Frequency-wavenumber method
PY - 2013
U6 - http://dx.doi.org/10.1016/j.compgeo.2013.02.001
SN - 0266-352x
VL - 51
SP - 50
EP - 59
PB - Elsevier Appl. Sci. Publ.
CY - Barking
AN - OPUS4-27983
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -