Photoelastic studies of three-dimensional stress field caused by a cylindrical punch

Journal Article · Sun Jun 01 00:00:00 EDT 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.328044· OSTI ID:5327120

Chu, S N.G.; Li, J C.M.

A stress-freezing technique is used to observe the stress distribution inside a cylindrical body produced by a coaxially loaded cylindrical punch. The flat end of the punch is pressed against the top surface of a vertical cylinder. After the stress is frozen in, a thin vertical diametric slice is prepared for photoelastic observation. The stress distribution is compared with theoretical results calculated for a semi-infinite body using the following two boundary conditions: uniform displacement of the punch and uniform pressure under the punch. The agreement is good at long distances (three times the punch radius) with either boundary condition. At short distances, the observed stress distribution is in between but close to the uniform displacement boundary condition. These results support the use of mixed stress distributions under the punch in a previous finite-element calculation of impressing creep velocities.

• Research Organization: Materials Science Program, Department of Mechanical and Aerospace Sciences, University of Rochester, Rochester, New York 14627
• DOE Contract Number: EY-76-S-02-2296001
• OSTI ID: 5327120
• Journal Information: J. Appl. Phys.; (United States), Vol. 51:6
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
PHOTOELASTICITY
THREE-DIMENSIONAL CALCULATIONS
BOUNDARY CONDITIONS
COMPARATIVE EVALUATIONS
CYLINDRICAL CONFIGURATION
DATA
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
STRESSES
SURFACES
CONFIGURATION
ELASTICITY
INFORMATION
420500* - Engineering- Materials Testing