Accession Number : ADA097162


Title :   Shock Spectrum Calculation from Acceleration Time Histories


Descriptive Note : Rept. for Jul 1976-May 1978


Corporate Author : CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CA


Personal Author(s) : Gaberson, H A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a097162.pdf


Report Date : Sep 1980


Pagination or Media Count : 67


Abstract : The report mainly discusses, compares, and derives one new and improved and two popular shock spectrum computation methods. The new one is a single recursive equation method that approximates the acceleration as a straight line between the digitized values. The new method is easily derived without recourse to Z Transform theory and, thus, should contribute to improved understanding of the computations. A new source of low frequency error common to all of the calculation methods was found, and empirical testing of the coefficients was used to establish digitizing rules to avoid the error. A FORTRAN listing of a program using the new method is given in an appendix.


Descriptors :   *TIME DEPENDENCE , *ACCELERATION , *SHOCK SPECTRA , COMPUTER PROGRAMS , COMPUTERIZED SIMULATION , DIGITAL SYSTEMS , COMPUTATIONS , STATISTICAL TESTS , SHOCK WAVES , GRAPHS , TRANSFORMATIONS(MATHEMATICS) , FORTRAN , RESPONSE , RECURSIVE FUNCTIONS , DATA REDUCTION , DATA COMPRESSION , EARTHQUAKES


Subject Categories : Computer Programming and Software
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE