Analysis of In-Plane and Out-of-Plane Ground Motions Using the Boundary Element Method.

Abstract

A completed research program is presented which has developed new computational methods to study geomechanics ground motions excited by subsurface sources. Both in-plane (plane strain) and out-of-plane (anti-plane strain) motions are investigated by employing a direct boundary element method within the framework of linear dynamic elasticity theory. The constructed boundary element method uses a time-dependent, half-space Green's function; thereby, eliminating the need to discretize the free surface, allowing the causality principle to reduce the number of required computations, and permitting an explicit time stepping scheme to be developed. The method is applicable for transient waves of general form propagating in an elastic half-space with arbitrary buried cavities. Numerical examples of both in-plane and out-of-plane problems are presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1984
Accession Number
ADA146229

Entities

People

  • J. M. Rice
  • M. H. Sadd

Organizations

  • University of Rhode Island

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Applied Mechanics
  • Boundary Element Methods
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Computers
  • Convolution Integrals
  • Elastic Properties
  • Elastic Waves
  • Engineering
  • Equations Of Motion
  • Integral Equations
  • Mechanical Engineering
  • Mechanics
  • Secondary Waves
  • Two Dimensional
  • Wave Propagation

Fields of Study

  • Mathematics
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.

Technology Areas

  • Space