The Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design report was produced under contract to the National Institute of Standards and Technology (NIST), by the NEHRP Consultants Joint Venture, a joint venture of ATC and the Consortium of Universities for Research in Earthquake Engineering (CUREE). (Published 2010, 222 pages)
ABSTRACT: The FEMA 440 Report concluded that current nonlinear static analysis procedures, which are based on single-degree-of-freedom (SDOF) models, are limited in their ability to capture the complex behavior of structures that experience multiple-degreeof- freedom (MDOF) response. It further concluded that improved nonlinear analysis techniques to more reliably address MDOF effects were needed. In response, work on this project was structured to include a detailed review of recent research on nonlinear MDOF modeling and the conduct of focused analytical studies to fill gaps in available information. This work was intended to improve nonlinear MDOF modeling for structural design practice by providing guidance on: (1) the minimum level of MDOF model sophistication necessary to make performance-based engineering decisions; (2) selection of appropriate nonlinear analysis methods; and (3) possible alternative approaches to analytical modeling.
This task has been completed and produced the NIST GCR 10-917-9 report which may be ordered here in hard (printed) copy format.
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