Three-dimensional stress analysis of adhesive butt joints with disbonded areas and spew fillets

1990 ◽  
Vol 10 (4) ◽  
pp. 294-300 ◽  
Author(s):  
K. Temma ◽  
T. Sawa ◽  
Y. Tsunoda
Keyword(s):  
Stress Analysis ◽  
Three Dimensional ◽  
Butt Joints

Three-Dimensional Stress Analysis of Adhesive Butt Joints of Solid Cylinders Subjected to External Tensile Loads

1989 ◽  
Vol 31 (1) ◽  
pp. 33-43 ◽  
Author(s):  
Toshiyuki Sawa ◽  
Katsuhiro Temma ◽  
Hirohisa Ishikawa
Keyword(s):  
Stress Analysis ◽  
Three Dimensional ◽  
Butt Joints

Two-Dimensional Stress Analysis of Adhesive Butt Joints Filled With Elastic Circular Fillers in an Adhesive Subjected to Static Tensile Loadings

2006 ◽  
Author(s):  
Toshiyuki Sawa ◽  
Yosuke Akita
Keyword(s):  
Stress Analysis ◽  
Three Dimensional ◽  
Tensile Load ◽  
Adhesive Bond ◽  
Theory Of Elasticity ◽  
Two Dimensional ◽  
Stress Distributions ◽  
Butt Joints ◽  
Analytical Results ◽  
Static Tensile

This paper deals with a two-dimensional stress analysis of adhesive butt joints filled with elastic circular fillers in an adhesive subjected to an external tensile load. Similar adherends and an adhesive bond are replaced with finite strips in the analyses. Stress distributions in adhesive joints are analyzed exactly using the two-dimensional theory of elasticity. The effects of stiffness and number of fillers on the interfaces stress distributions and around the fillers with higher Young's modulus are shown in the numerical computations. It was seen that as an amount of number of fillers increased, the strength of joints was able to be more improved than that of the joints without a filler. For verification, experiments were carried out to measure the strains. The analytical results are in fairly good agreements with the experimental ones. In addition, for verification of the interface stress distribution, the analytical results are also compared with those obtained from the two-dimensional and three-dimensional FEM calculations. Fairly good agreements are seen between the analytical and the two-dimensional FEM results. However, the result from the present analysis is different from that of the three-dimensional FEM.

scholarly journals Origin and Application of the Twinned Calcite Strain Gauge

Geosciences ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 296
Author(s):  
Richard H. Groshong
Keyword(s):  
Stress Analysis ◽  
Strain Gauge ◽  
Strain Tensor ◽  
Three Dimensional ◽  
Constant Strain Rate ◽  
Axis Orientation ◽  
Order Of Magnitude ◽  
Rate Experiment ◽  
Strain Axis ◽  
Expected Values

This paper is a personal account of the origin and development of the twinned-calcite strain gauge, its experimental verification, and its relationship to stress analysis. The method allows the calculation of the three-dimensional deviatoric strain tensor based on five or more twin sets. A minimum of about 25 twin sets should provide a reasonably accurate result for the magnitude and orientation of the strain tensor. The opposite-signed strain axis orientation is the most accurately located. Where one strain axis is appreciably different from the other two, that axis is generally within about 10° of the correct value. Experiments confirm a magnitude accuracy of 1% strain over the range of 1–12% axial shortening and that samples with more than 40% negative expected values imply multiple or rotational deformations. If two deformations are at a high angle to one another, the strain calculated from the positive and negative expected values separately provides a good estimate of both deformations. Most stress analysis techniques do not provide useful magnitudes, although most provide a good estimate of the principal strain axis directions. Stress analysis based on the number of twin sets per grain provides a better than order-of-magnitude approximation to the differential stress magnitude in a constant strain rate experiment.

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