Accession Number : AD0904300

Title :   Theoretical Analysis of a Triaxial System of Velocity Gages.

Descriptive Note : Technical rept. Feb-Jul 72,

Corporate Author : NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s) : Sonnenburg,Paul N.

Report Date : SEP 1972

Pagination or Media Count : 69

Abstract : An analytical study was made of a triaxial system of pendulum type velocity gages. These gages are to be arranged in a canister and placed in an earth medium to record field particle velocities resulting from an explosion. The purpose of this study was (1) to determine the effects of cross-axis sensitivity of the gages, (2) to estimate the errors associated with linearizing the governing equations when finite pendulum angles (up to about 11 deg) are considered, (3) to determine what mathematical simplifications could be made to the equations of motion without seriously affecting the results, and (4) to demonstrate the theoretical possibility of reproducing the orthogonal field particle velocities with acceptable accuracy. A positive indication that the field data can be reconstructed in concept is considered highly desirable before more expensive work is begun. The major conclusion from this study was that the field data can be reproduced quite accurately provided the high-frequency noise can be filtered from the pendulum angle traces. (Author)

Descriptors :   (*ACCELEROMETERS, EQUATIONS OF MOTION), (*VELOCITY, MEASUREMENT), (*EXPLOSIONS, INSTRUMENTATION), SURFACE BURST, OSCILLATION, DAMPING, SIMULTANEOUS EQUATIONS, EXPLOSION EFFECTS, PARTICLES, MOTION, MEASURING INSTRUMENTS, CALIBRATION, CONTAINERS, MATRICES(MATHEMATICS), MATHEMATICAL MODELS, IMPACT, CORRECTIONS, SIMULATION, COMPUTER PROGRAMS, NUMERICAL ANALYSIS, GRAPHICS

Subject Categories : Test Facilities, Equipment and Methods
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE