CALNPS Computer Analysis Language Naval Postgraduate School version

Abstract

The Computer Analysis Language (CAL) Program was originally written by Professor Edward L. Wilson of the University of California at Berkeley as a teaching tool for structural analysis. The program was modified for use on the Naval Postgraduate School (NTS) mainframe (IBM 360.67) in 1979 by Lawrence B. Elliott, Lieutenant Commander, U.S.N. The modified version was called CALNPS. In 1982, Warren L. Roberts, Lieutenant, U.S.N., integrated the Finite Element Analysis Program (FEAP) with CALNPS. This provided a means for the solution of linear and nonlinear, two and three dimensional, and, steady state and transient heat conduction problems. Roberts also generated an interactive "HELP" facility and the code for terminal graphics displays of heat transfer and structural analysis meshes. Since then, changes to the NTS computer system and transition of CALNPS to the VAX computer system have rendered CALNPS unusable in many ways. The "HELP" facility is obsolete. The purpose of this thesis was to bring CALNPS back up to date, rewrite the "HELP" facility, and make the program "user friendly". Also several modifications were added to CALNPS. The graphics capabilities were expanded to include hardcopy options using the Plot 10 and Disspla graphics libraries. Two display size options are now available and the user now has the capability to plot curves from data files from within the CALNPS domain. As CALNPS is a very large program, several of the functions available had not been tested completely and as a result did not work at all or did not work in the manner described in the user's manual. This thesis work included the testing of every command and verifying that they work in accordance with the user's manual. Several problems were discovered and corrected by either changing the FORTRAN code or the instructions or both. The work was focused around use of the VAX computer system.