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This legacy software from 1985 provides computer analysis language for the static and dynamic analysis of structural systems. Source code in FORTRAN and related reports can be downloaded from the earthquake engineering online archive maintained by University of California Berkeley.
CAL-80 (SD): Computer Analysis Language for the Static and Dynamic Analysis of Structural Systems
Wilson, Edward L.; Hoit, Marc Ira
Department of Civil Engineering, University of California, Berkeley, Modified: F. Seible and C.T. Latham, Department of Applied Mechanics and Engineering Science, University of California, San Diego 1985., 1980,
CAL80 (SD) is an extensive modification of CAL78 which has options ranging from simple matrix manipulation, as an extension of classical structural analysis, to the direct stiffness formulation of structural systems with extensions to dynamic analysis in the time or frequency domain. An accompanying program, SIMPAL, contained within the CAL80 source code provides a transition to production-type programs for structural analysis by including options for data generation and geometry checks by screen plots. CAL80 operates as an interactive program but can also operate in batch mode by taking commands from an input file rather than a terminal. It is a database-driven program that is modularly constructed, with communication between each module controlled by a database manager. Small individual program segments, efficiently assembled by the use of run-time libraries and interconnected by a common database, allow applications not only on minicomputers and large mainframes, but also on microcomputer systems.