Stress Distribution of Copper/Stainless Steel Friction Welded Joints
| Autor: | Kozo Okita, Yusuke Fukuchi |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Structural engineering Welding law.invention Stress (mechanics) Thermoelastic damping Mechanics of Materials law Shear stress General Materials Science Friction welding Composite material business Elastic modulus Stress intensity factor Stress concentration |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A. 62:1677-1683 |
| ISSN: | 1884-8338 0387-5008 |
| Popis: | This paper examines the stress distributions in friction welded joints of dissimilar materials of copper and stainless steel under cyclic tensile stress. The thermoelastic stress analysis method is used to measure the stress distribution. This technique for stress measurement is based on detection of the temperature changes by thermoelastic effect. The stress distributions in the bonded joints of dissimilar materials on an elastic modulus are also calculated from the elastic stress analysis using the finite element method. The experimental results indicate that this technique is very useful for stress analysis on friction welded joints of dissimilar materials. Because the stress distribution map is quickly and directly obtained. The tendency of stress distribution is similar to the results obtained by elastic stress analysis. Particularly, near the interface for plate specimen, the experimental resut agrees with the result of three dimensional elastic stress analysis. The stress distribution in copper near the interface on the surface for round bar specimen differs from the result of elastic stress analysis due to the effect of change in mechanical properties and microstructures produced by friction welding. The results of elastic stress analysis considering anisotropic area near the interface agree with the experimental values. |
| Databáze: | OpenAIRE |
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