Accession Number : AD0832681

Title :   A COMPUTER PROGRAM FOR THE DYNAMIC STRESS ANALYSIS OF UNDERGROUND STRUCTURES,

Corporate Author : CALIFORNIA UNIV BERKELEY STRUCTURAL ENGINEERING LAB

Personal Author(s) : Wilson, Edward L.

Report Date : JAN 1968

Pagination or Media Count : 65

Abstract : The finite element method coupled with a stable step-by-step integration procedure is used to evaluate the dynamic response of linearly elastic two-dimensional stress structures. Linear strain quadrilateral elements and one-dimensional elements are combined to represent complex structural systems of arbitrary geometry. The computer program included in this report is suitable for the earthquake or blast analysis of underground structures. Arbitrary time-dependent displacements or loads may be specified at any point in the system. The method is applied to the blast analysis of a cylinder buried underground and the results are compared to an experimental study. The use of the program and a listing of the FORTRAN IV program for the CDC 6400 are given in the Appendices. (Author)

Descriptors :   *COMPUTER PROGRAMS), (*UNDERGROUND EXPLOSIONS, (*UNDERGROUND STRUCTURES, STRESSES), BLAST, LOADS(FORCES), EARTHQUAKES, GEOMETRY, RESPONSE, CYLINDRICAL BODIES, STABILITY, MATHEMATICAL ANALYSIS, STRAIN(MECHANICS), FOUNDATIONS(STRUCTURES), INTERACTIONS, STRUCTURAL PROPERTIES.

Subject Categories : Computer Programming and Software
      Structural Engineering and Building Technology
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE