SMACS. Probabilistic Seismic Analysis System
- EQE Incorporated, San Ramon, CA (United States)
- Lawrence Livermore National Lab., CA (United States)
The SMACS (Seismic Methodology Analysis Chain with Statistics) system of computer programs is one of the major computational tools of the U.S. NRC Seismic Safety Margins Research Program (SSMRP). SMACS is comprised of the core program SMAX, which performs the SSI response analyses, five preprocessing programs, and two postprocessors. The preprocessing programs include: GLAY and CLAN, which generate the nominal impedance matrices and wave scattering vectors for surface-founded structures; INSSIN, which projects the dynamic properties of structures to the foundation in the form of modal participation factors and mass matrices; SAPPAC, which projects the dynamic and pseudostatic properties of multiply-supported piping systems to the support locations, and LNGEN, which can be used to generate the multiplication factors to be applied to the nominal soil, structural, and subsystem properties for each of the response calculations in accounting for random variations of these properties. The postprocessors are: PRESTO, which performs statistical operations on the raw data from the response vectors that SMAX produces to calculate best fit lognormal distributions for each response location, and CHANGO, which manipulates the data produced by PRESTO to produce other results of interest to the user. Also included is the computer program SAP4 (a modified version of the University of California, Berkeley SAPIV program), a general linear structural analysis program used for eigenvalue extractions and pseudostatic mode calculations of the models of major structures and subsystems. SAP4 is used to prepare input to the INSSIN and SAPPAC preprocessing programs. The GLAY and CLAN programs were originally developed by J.E. Luco (UCSD) and H.L. Wong (USC).
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Office of Nuclear Regulatory Research
- OSTI ID:
- 138956
- Report Number(s):
- ESTSC/NRC-000078C760000; NESC-1077
- Resource Relation:
- Other Information: DN: Programs LNGEN and PRESTO call subroutines from the proprietary International Mathematical and Statistical Library, Inc. (IMSL); these routines are not provided.; PBD: 14 Jan 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
SMACS: a system of computer programs for probabilistic seismic analysis of structures and subsystems. Volume I. User's manual
Seismic Safety Margins Research Program. Phase I, Final report. SMACS: seismic methodology analysis chain with statistics (Project VIII). Volume 9