To numerically solve a problem of stress-strain state of a workpiece metal under roll forming, finite element analysis was used that allowed using the principle of elastic-plastic deformations with a multilinear hardening curve. Numerical results of base metal lift have been analyzed and the adhesion strength of antifriction coatings and a steel base has been determined. Some recommendations have been made on optimal diameter choice of a workpiece subjected to the skew mesh roll forming
Abstract. The present paper considers simulation of a rotor's dynamics behaviour on thrust foil gas dynamic bearings based on simultaneous solution of gas dynamics differential equations, equations of theory of elasticity, motion equations and some additional equations. A double-mass dynamic system was considered during the rotor's motion simulation which allows not only evaluation of rotor's dynamic behaviour, but also to evaluate the influence of operational and load parameters on the dynamics of the rotor-bearing system.
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