NATIONALCENTER FOREARTHQUAKEENGINEERINGRESEARCH

ISSN 1088-3800

3D-BASIS - Nonlinear Dynamic Analysis of Three-Dimensional Base Isolated Structures:

Part II

by

S. Nagarajaiah, A.M. Reinhorn and M.C. Constantinou

Technical Report NCEER-91-0005

February 28, 1991

This research was conducted at the University at Buffalo, State University of New York and was supported in whole or in part by the National Science Foundation under grant

number ECE 86-07591.

NOTICEThis report was prepared by the University at Buffalo, State University of New York as a result of research sponsored by the National Center for Earthquake Engineering Research (NCEER) through a grant from the National Science Foundation, and other sponsors. Neither NCEER, associates of NCEER, its sponsors, the University at Buffalo, State University of New York nor any person acting on their behalf:

a. makes any warranty, express or implied, with respect to the use of any informa-tion, apparatus, method, or process disclosed in this report or that such use may not infringe upon privately owned rights; or

b. assumes any liabilities of whatsoever kind with respect to the use of, or the damage resulting from the use of, any information, apparatus, method, or process disclosed in this report.

Any opinions, findings, and conclusions or recommendations expressed in this publica-tion are those of the author(s) and do not necessarily reflect the views of NCEER, the National Science Foundation, or other sponsors.

ISSN 1088-3800

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NATIONALCENTER FOREARTHQUAKEENGINEERINGRESEARCH