No abstract

An analysis is made of the effects of flexibility on the lubrication of a loaded journal bearing. Numerical and graphical results are presented for (a) the pressure distributions in the oil film, (b) the thickness variation of the film, (c) the magnitude and direction of the load applied to the bearing, and (d) the frictional forces in the bearing. The oil is first assumed to be isoviscous and the above data are found to depend on the values of the two independent parameters C0=6Uη0R2t(1−ν02)/Ec3 and ε = e/c (see Nomenclature). The analysis is then extended to the case of a pressure-dependent viscosity η = η0eαp oil, and the data found to depend on the values of the three independent parameters C0, ε, and β=Eeα/t(1−ν02).

The investigation covers a flat strip bent into a circular ring and a cylindrical drum expanding inside the ring. The resulting anticlastic deformations of the strip and the contact patterns are representative of a flat strip being bent around a rigid, frictionless, cylindrical drum and then put under tension. The analysis shows that three contact patterns are possible and their respective regions are delineated in terms of the geometric and tension parameters. Expressions for anticlastic deformations and some numerical solutions are also presented.

The research presented in this paper is an analytical study of the vibrations associated with planar mechanical linkages. Specifically, the vibrations of a high-speed slider-crank mechanism with a uniform elastic connecting rod and a rigid crank are studied. The elastic connecting rod, with distributed mass, is taken to be externally, viscously damped with a concentrated mass present at its sliding end. The equations governing the longitudinal and transverse vibrations of the elastic connecting rod are derived, a small parameter is found, and the solution is developed as an asymptotic expansion in terms of this small parameter with the aid of the Krylov-Bogoliubov method of averaging. The elastic stability is studied and the steady-state solutions for both the longitudinal and transverse vibrations of the connecting rod are obtained.

No abstract