M. Yoneno et al., AXISYMMETRICAL STRESS-ANALYSIS AND STRENGTH OF BONDED SHRINK-FITTED JOINTS SUBJECTED TO PUSH-OFF FORCES, JSME international journal. Series A, Solid mechanics and material engineering, 40(4), 1997, pp. 362-374
Shrink fit has been used commonly for joining the cylindrical componen
ts such as shaft and gears. It is noted recently the shrink fitted joi
nt with anaerobic adhesives is adopted in order to improve it's joint
strength. In a reliable design of bonded shrink fitted joints, it is n
ecessary to know the contact stress distributions at the interfaces. I
n this paper, the interface stress distribution of bonded shrink fitte
d joint under push-off force is analyzed by using axisymmetric theory
of elasticity as four-body contact problem. Analogical test is conduct
ed to determine the relationship between the normal stress and the she
ar stress. Using the interface stress distribution and analogical test
results, a method for estimating the joint strength is proposed. In t
he 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 measure
ment was carried out for bonded shrink fitted joints. In the experimen
ts, the effect of shrink fit interference and the outer diameter of ri
ng 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.