3D = tres d- Basis - Tabs : Version 2.0 computer program for nonlinear dynamic analysis of three dimensional base isolated structures

ABSTRACT

This report describes the development of computer program 3D-BASIS-TABS Version 2.0. The new program is an enhanced version of 3D-BASIS-TABS. The report should be viewed as a continuation and addition to previous reports NCEER-93-0011 and NCEER-91-0005. The enhancements that have been made include (i)addition of new isolation elements; (ii)models of nonlinear dampers and other hysteretic elements; (iii) additional verification; (iv) addition of several new example problems; (v) new input/output format for easier usage; (vi) updated user's manual.(AU)