AN EXPERIMENTAL STUDY OF CAVITY COLLAPSE MECHANISM
Abstract
An experimental investigation was performed to study the mechanism of failure under uniform uniaxial compression of a cube containing a cylindrical hole of a prescribed sectional shape. The load was applied normal to the axis of the hole, and the shapes tested were a circle, an ellipse, a three-quarter circle, and a three quarter ellipse. The cubes were one foot on a side and the major diameters of the circle and ellipse two inches, the three-quarter shapes being identical to their full counter-parts except for the cut-out sections. The material chosen was plaster of paris and cement mortar. Detailed notes and photographs were taken of the failure process for each specimen. In general the results were found to be consistent within a specimen type and among the types as well. Moreover, the results seem to be at least generally explained on the basis of linear, isotropic elasticity theory and a strength theory in the spirit of Mohr's theory. Some remarks are made concerning the statistical analysis of strength of brittle materials such as plaster with regard to scatter in the data. Comparisons were also made of the failure mode of the circular cavity and those obtained by Rinehart under dynamic loadings, and it was found that great similarity exists between the two tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1961
- Accession Number
- AD0409964
Entities
People
- C. C. Mow
- John K. Hawley
- Lewis T. Assini
Organizations
- MITRE Corporation