Contact Problems between the Hub and the Shaft with a Four-Angular Shape of Cross-Section for Different Angular Positions

Abstract

The works [1, 2] present the values of the force and moment of friction needed to disassemble the axisymmetric connection with oval and three-angular shape of cross-section of the shaft. These works additionally show the variable values of the Mises stresses and contact pressures. This paper presents research which is a continuation of the research program on the evaluation of the influence of cross-section deviations, radial deviations, and their compilations on the value of the contact area in the connection. The limited contact area has a decisive impact on functional and operational parameters of the connection. Point contact between the shaft and the hole is the reason of the reduction of load transmission. The paper concerns the connection between the shaft with four-angular shape of cross-section with the deviation Tw = 13 μm and the hub with the nominal roudness. The authors have proved the occurrence of variable values of the force and moment of friction during disassembling of the connection. The authors have also showed the occurrence of variable values of the reduced stresses and contact pressures.

Contribution to fatigue damage prediction of thin shell finite element models

“…Presented relationships have been applicable for FE analyses. Numerical and experimental tests have confirmed that the factor k = 0.3 was overstated [4,13] by author.…”

“…At first we have to prepare the stress calculation process. This process is based on the expression of the j-th element membrane forces and bending moments (without shear forces) [13,14]…”

“…It means that the important goal of this part will be to propose some approaches to estimate the high-cycle fatigue damage for multiaxial stresses caused by random vibration analysed structure [10,16,17]. Generally we can apply two fundamental approaches for multiaxial rainflow counting:  Critical Plane Approach (CPA) [13], and  Integral Approach (IA) [10]. It is well-known that the Wöhler curve ( Fig.…”

Design and stress analysis of wheeled compactor construction

“…Contact with friction between sleeve and shaft was the first contact pair, Fig. 4, [8]. Assigned values are the same on both sides.…”

Numerical simulation of blanking process

“…It is used both for the preparation of semi-finished products and cutting of metal parts either for final use or as preparation for other technological operations [1,2]. Simple analytical calculations are usually used during preparation of serial manufacturing [3,4].…”