Accession Number:

ADA126040

Title:

Viscoplastic Analysis of a Continuous Cylindrical Opening Surrounded by Volcanic Tuff

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1982-12-01

Pagination or Media Count:

90.0

Abstract:

Nuclear blast effect on a deep underground tunnel was studied for quasi-static and quasi-transient loading conditions. A finite element model was developed and used with a two-dimensional constant strain triangle computer code. Viscoplasticity was introduced through the Malvern flow law in conjunction with the Drucker-Prager constitutive equations. The quasi-static results compared favorably with experimental studies. Quasi-transient results can be compared against future experimental work and field tests.

Subject Categories:

  • Numerical Mathematics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE