NEHRP Clearinghouse
 Title
 Summary on Pseudodynamic Testing.
 File

PB93216000.pdf
 Author(s)
 Seible, F.; LaRovere, H. L.
 Source

National Science Foundation, Washington, DC.,
February 1987,
53 p.
 Identifying Number(s)
 REPT3.1(B)1
 Abstract
 The analytical basis for interactive or online experimental testing under simulated dynamic loads, often referred to as Pseudodynamic Testing, is summarized in the report and implemented in a computer code PSDYN. The code is based on the CALSD series of structural analysis programs and incorporates a set of commands allowing not only the computation of the displacement response in a Pseudodynamic Method but also linear dynamic analysis of structures using stepbystep methods, solution of eigenvalue problems, and general matrix manipulations. PSDYN is written in FORTRAN77 with a freefield type of input and can be used either in batch or interactive mode. The program utilizes runtime libraries interconnected by a common database, which allows applications on large mainframes as well as on microcomputer systems. Examples described in the report have been run in a VAX/VMS environment and on the CRAY XMP. Chapter 2 describes briefly the Pseudodynamic Test Method and summarizes the background necessary to utilize it. A complete user's manual for all the PSDYN commands is given in Chapter 3. In Chapter 4 two examples of a three Degrees of Freedom (DOF) structure subjected to a blast loading and to the El Centro 1940 (NS) earthquake are shown.
 Keywords
 Computer programs; Earthquake engineering; Dynamic tests; Test methods; PSDYN computer program; Structural vibration; Matrices (Mathematics); User manuals (Computer programs); Vibration damping; Computerized simulation; Mathematical models; Dynamic structural analysis