20406 Study of Stress Analysis of Manhole Cover under Static Load with Three Dimensional Stress Freezing Method

2009 ◽  
Vol 2009.15 (0) ◽  
pp. 233-234
Author(s):  
Nobuhiro AOYAGI ◽  
Tsutomu EZUMI
Keyword(s):  
Stress Analysis ◽  
Static Load ◽  
Three Dimensional ◽  
Freezing Method ◽  
Stress Freezing Method

A Photoelastic Study of Stresses in Rotating Disks

1940 ◽  
Vol 7 (2) ◽  
pp. A57-A60
Author(s):  
R. E. Newton
Keyword(s):  
Stress Analysis ◽  
Fringe Pattern ◽  
Three Dimensional ◽  
New Technique ◽  
Uniform Thickness ◽  
Rotating Disks ◽  
Photoelastic Method ◽  
Freezing Method ◽  
Stress Freezing Method

Abstract The recent experiments of Hetényi and others in developing a technique for “freezing” stresses in bakelite and other photoelastic plastics have broadened tremendously the scope of the photoelastic method of stress analysis. In addition to making possible the solution of three-dimensional problems, the new technique offers itself as a powerful tool in solving problems in which it is inconvenient to study the fringe pattern while the model is actually under load. Problems of centrifugal stresses in constant-speed rotors fall in this class and are readily handled by the stress-freezing method. It is the purpose of this paper to discuss the application of the technique to the determination of the stresses in rotating disks of uniform thickness having symmetrically placed noncentral holes, as shown in Fig. 1 (1, 2).

Stress Analysis of Shrink Fitted Joints of Solid Shafts and Three-Dimensional Photoelastic Experiment

1999 ◽  
Author(s):  
Fumito Nakagawa ◽  
Toshiyuki Sawa ◽  
Yuichi Nakano ◽  
Masahide Katsuo ◽  
Masahiro Yoneno
Keyword(s):  
Contact Stress ◽  
Three Dimensional ◽  
Partial Slip ◽  
Stress Distributions ◽  
Epoxide Resin ◽  
The Finite Element Method ◽  
Freezing Method ◽  
Photoelastic Experiment ◽  
Stress Freezing Method ◽  
Fringe Patterns

Abstract In this paper, shrink fitted joints of solid shaft and ring made of epoxide resin were assembled and photoelastic experiments were carried out. Isochromatic fringe patterns in the shrink fitted joint were measured using the three-dimensional stress freezing method. Then, the contact stress distributions in the shrink fitted joint of the ring and the solid shaft were analyzed using the finite element method. The three models, i.e., with slip, without slip and with partial slip at the interface were analyzed and the results were compared. The effects of chamfer at the edge of the interface and the material properties of the ring (hollow cylinder) on the contact stress distributions were examined.

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