Mag. Anže Čelik, univ. dipl. inž., Poclain Hydraulics, d. o. o., Žiri;
Prof. dr. dr. Boris Jerman, univ. dipl. inž., Univerza v Ljubljani, Fakulteta za strojništvo
izr. prof. dr. Franc Majdič, univ. dipl. inž., Univerza v Ljubljani, Fakulteta za strojništvo

Abstract:

The paper depicts simulation activities performed with purpose of evaluation the mechanical response of a non-standard plug as a result of different loading scenarios. Detailed understanding of mechanical response of a plug can be understood as a prerequisite for the appropriate experimental validation, appropriate preparation of test samples and last but not least, also for the correct determination of guidelines for design of such components.

Thanks to detailed simulation model, mechanical response (stresses, displacements and strains) has been closely observed. Stress field helps to identify areas where design modifications are needed (for properly performed experiments via implementation of strain gauges) as well as to identify “hot-spots” on plug that affects structural integrity.

Based on understanding of mechanical response of original plug design, further design changes have been performed. It turns out that the latter do not significantly affect the stress-strain response. For static dimensioning of original plugs, the loads measured on the modified plugs can therefore be used without significant deviations.

Keywords:

non-standard plug, numerical investigation, finite element method, preload force, tightening torque, design guidelines