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Title: Description and User's Manual of the Inelastic Dynamic Analysis Program. Optimum Seismic Protection for New Building Construction in Eastern Metropolitan Areas.
File: PB80108152.pdf
Author(s): Anagnostopoulos, S.; Roesset, J. M.
Source: National Science Foundation, Washington, DC. Engineering and Applied Science., September 1972, 24 p.
Identifying Number(s): INTERNAL STUDY-16
Abstract: A computer program, developed for the non-linear dynamic analysis of buildings, written in FORTRAN IV and using 350k of primary memory on an IBM 370/165 computer, is described. No secondary storage is required. The program is designed for buildings having a maximum of 30 stories, 30 different structural components, and 3000 points of ground acceleration in each of the two principal directions. The geometry of the building is specified through the number of stories, heights, the number of structural components, and a plan. The information given for a plan forms the coordinates of some point along the centerline of each component and the orientation of this centerline with respect to the x axis. The masses are given for each floor level separately, together with the coordinates of the centroid and the corresponding moments of inertia. The required properties are given floor by floor for bending springs. For shear springs the user has the option of either specifying the spring characteristics floor by floor directly or in the case of frames to specify its geometry and the member properties at each level. The program will then compute the spring properties. The user has also the option to specify the number of modes for the elastic part of the analysis, together with the coordinates of a geometrical center with respect to which the modal shapes will be computed.
Keywords: Seismic design; IBM-370/165 computers; Earthquake resistant structures; Dynamic response; Earthquake engineering; Fortran 4 programming language; Computer programming; Elastic properties; Fortran; Earthquakes; Dynamic structural analysis