Shrink fit has been used commonly for joining the cylindrical components such as shaft and gears. It is noted recently the shrink fitted joint with anaerobic adhesives is adopted in order to improve it's joint strength. In a reliable design of bonded shrink fitted joints, it is necessary to know the contact stress distributions at the interfaces. In this paper, the interface stress distribution of bonded shrink fitted joint under push-off force is analyzed by using axisymmetric theory of elasticity as four-body contact problem. Analogical test is conducted to determine the relationship between the normal stress and the shear stress. Using the interface stress distribution and analogical test results, a method for estimating the joint strength is proposed. In the numerical calculations, the effect of the outer diameter and Young's modulus of the rings and the engagement length on the contact stress distributions at the interfaces are clarified. Push-off force measurement was carried out for bonded shrink fitted joints. In the experiments, the effect of shrink fit interference and the outer diameters of ring on the joint strength are examined. The numerical results are in a fairly good agreement with the experimental results. It is found that the strength of the bonded shrink fitted joint is greater than that of shrink fitted joint.
Strength of Bonded Shrink-Fitted Joints Subjected to Push-Off Forces
Sae Technical Papers
International Congress & Exposition ; 1999
1999-03-01
Conference paper
English
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