A BEM Program for Two Dimensional Transient Elastodynamic Analysis of Underground Openings

A program employing the direct boundary element method (BEM) has been developed for the solution of transient elastodynamic stress concentration problems associated with underground openings. The program employs plane strain analysis and is capable of dealing with openings in infinite and semi-infinite continua. The solution is accomplished by applying the Laplace transform to the equation of motion, by implementing the direct BEM for the numerical solution of the problem and by numerically inverting the transformed solution using Fast Fourier Transform (FFT). The available forcing function can be an explosive P or SV shock stress wave. A convenient feature of the program is the absence of any restrictions concerning the orientation of the specified plane wave.

• INTRODUCTION

• FORMULATION OF THE PROBLEM

• LINEAR VISCOELASTIC BEHAVIOUR

• COMPUTER PROGRAM DESCRIPTION

• APPLICATIONS

• APPENDIX A

• ACKNOWLEDGMENT

• REFERENCES