Abstract
To calculate the static-stiffness matrix of the unbounded soil for use in a time-domain analysis of soil-structure interaction, the consistent infinitesimal finite-element cell method is developed. Its derivation is based on the finite-element formulation and on similarity. The discretization is only performed on the structure-soil interface, yielding a reduction of the spatial dimension by 1. The procedure is exact in the radial direction and exact in the finite-element sense in the circumferential directions. In contrast to the boundary-element procedure, the consistent infinitesimal finite-element cell method does not require a fundamental solution and incorporates interfaces extending from the structure-soil interface to infinity compatible with similarity without any additional computational effort. A general anisotropic material can be processed. Applications of the consistent infinitesimal finite-element cell method to problems of increasing complexity ranging from a spherical cavity with uniform pressure to a tunnel in inhomogeneous transversely isotropic unbounded rock show excellent accuracy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
