A Speed-Up in Computing Time for SSI Analysis by p-version Infinite Elements
Jaesung Lim, Il-Min Son, Jae-Min Kim, Choon-Gyo Seo · Journal of the Computational Structural Engineering Institute of Korea · 2016
In this study, we focused on a speed-up of KIESSI-3D program, which is based on FE-IE techniques, by introducing a p-version dynamic infinite element method.In order to evaluate performance of the KIESSI-3D, numerical analyses for eight real-scale SSI problems are carried out.We considered three types of KIESSI-3D numerical models whose radii of near-field soil region( )are 1.2, 1.5, and 3.0 times of basemat radius of structure().In addition, SSI analyses using the SASSI2010 program are carried out used for comparison of accuracy and runtime against those of the KIESSI-3D.Numerical results show that the KIESSI-3D model of 1.2 is enough to give accurate solution.In view of the computing speed, the new KIESSI-3D was up to 25 times faster than the old KIESSI-3D.