User's manual for SMACS: a family of codes for probabilistic structural analysis

Technical Report · Mon Mar 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/5235720· OSTI ID:5235720

Bumpus, S; Shukla, S N; O'Connell, W J; Gerhard, M A

SMACS is a code which links the seismic input, soil-structure interaction and structural response calculations to obtain response vectors, which in turn are used as input for risk analysis. Inherently, there are uncertainties involved in various links of the seismic methodology chain. SMACS incorporates the uncertainty in the seismic input by using a suite of possible earthquakes. Uncertainties in the soil-structure interaction (SSI) are incorporated by using a range of values of soil shear modulus and soil material damping at a given site. Similarly a range of probable values of modal frequency and damping of the structure are used to account for uncertainties in structural modelling. The following pre-processor codes are available, as a package, to create necessary input files for the SMACS program: SIMQ (for generating seimic input); GLAY and CLAF (for soil-structure interaction analysis); and SAP4 (for modal analysis of the structures). The post-processor codes available are: PRESTO (to plot probability distributions for the response vectors or basic events); and CHANGO (to plot comparisons of basic events from different analyses). The code, SMACS, and the nature of the problem it solves are discussed. The way that SMACS is executed is explained. Manuals are provided that explain how to create the necessary input files for different subprograms of the SMACS family. An example problem illustrating an SSI analysis for a containment structure is presented.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5235720
• Report Number(s): UCID-19137; ON: DE82015151
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580201* -- Geophysics-- Seismology & Tectonics-- (1980-1989)
COMPUTER CALCULATIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
EARTHQUAKES
MECHANICAL STRUCTURES
MECHANICS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
POWER PLANTS
S CODES
SAFETY
SEISMIC EFFECTS
SEISMIC EVENTS
SIMULATION
SOIL MECHANICS
STRESS ANALYSIS
THERMAL POWER PLANTS