Accession Number : ADA095735


Title :   Analysis of an Assemblage of Discs Employing Interactive Graphics.


Descriptive Note : Final rept. Dec 77-Sep 80,


Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB


Personal Author(s) : Palmerton,John B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a095735.pdf


Report Date : Dec 1980


Pagination or Media Count : 94


Abstract : This report describes the development of a computer program entitled DISC. This computer program uses concepts of the distinct element method in that the kinematics of a system of particles (elements) are faithfully represented. The system of elements to be analyzed consists of a collection of individual elements with individual material properties rather than a continuum for which material properties apply throughout the system. The types of particles that can be accommodated by DISC consist of discs and bar-shaped elements. These particles are permitted to react with one another by touching, rolling, bouncing or sliding. Problems requiring a quasi-static solution or problems involving large velocities and displacement can be analyzed. In addition to extending the distinct element method to disc-shaped particles, extensive use was made of interactive graphics. Through interactive graphics, the user of the program is relieved of the usual difficulties involved in data preparation and the plotting of results. The mode of operation of the computer program is visual; i.e., pictures (or plots) of the system of disc-shaped elements are drawn on a cathode ray terminal. The program operates in a time-sharing environment. (Author)


Descriptors :   *COMPUTER PROGRAM DOCUMENTATION , *INTERACTIVE GRAPHICS , KINEMATICS , COMPUTER PROGRAMS , COMPUTERIZED SIMULATION , SHAPE , FORTRAN , COMPUTER GRAPHICS , PARTICULATES , FLOW CHARTING , DISKS , TIME SHARING , PLOTTING , CATHODE RAY TUBES


Subject Categories : Computer Programming and Software
      Computer Systems


Distribution Statement : APPROVED FOR PUBLIC RELEASE