Abstract:
Soil-structure interaction has significant effect on the dynamic responses of
structures. In this paper, a time domain implicit convolutional-PML for structurefoundation
soil system is developed for FEM analysis to absorb outgoing waves at the
artificial boundaries of numerical models. At first, convolutional PML for FE analysis
was developed, and symmetric coefficient matrices are obtained to be consistent with
most of FEM codes. Then, the convolutional PML was extended to cope with elastoplastic
material. The high performances of the proposed procedures both for linearelastic
soil-structure problem and for non-linear soil-structure problem with elastoplastic
soil subjected to large seismic loading are demonstrated by numerical examples.