Krčni nased za elasto plastičen material

Hrastel, Anže (author), Nagode, Marko (mentor), Oman, Simon (co-mentor)

Krčni nased uvrščamo med strojne elemente, ki omogočajo prenos vrtilnega momenta. Pri prenosu določenega vrtilnega momenta je za zagotavljanje zadostnega trenja med pestom in gredjo ali obratno potrebno zagotoviti pravo ujemanje, poznati temperaturo vgradnje in obratovanja ter določiti ustrezen material. V zaključni nalogi je predstavljena izpeljava enačb za izračun napetosti v krčnem nasedu z upoštevanjem plastifikacije materiala. Pri izračunu je predpostavljen elastičen idealno plastičen materialni model. Prikazani so rezultati analitičnega izračuna za potek napetosti pri različnem tlaku in geometriji.

• Language: Slovenian
• Keywords: krčni nased elasto idealno plastičen material potek napetosti metoda maksimalnih strižnih napetosti tlak na kontaktni površini
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Publisher: [A. Hrastel]
• Year: 2018
• PID: 20.500.12556/RUL-103118
• UDC: 621.8:519.6(043.2)
• COBISS.SI-ID: 16413467
• Publication date in RUL: 14.09.2018

Secondary language

• Language: English
• Title: Press fit for elasto plastic material

Abstract

The press fit is classified among the machine elements, which enable the transfer of the torque. To ensure sufficient friction between the hub and the shaft (or vice versa), when transferring a torque, it is necessary to ensure proper matching, know the temperature of the installation and operation, and determine the appropriate material. In the final paper we present the derivation of the equations for the stresses in press fit, assuming an elastic ideal plastic material model. The results of the analytical calculation for the stress flow at various pressures and geometry are presented in the paper.

• Keywords: press fit eastic ideal plastic material stress shear stress hypothesis pressure on the contact surface