FEM Modelling Approaches of Bolt Connections for the Dynamic Analyses of an Automotive Engine

Abstract

Three different finite element method (FEM) modelling approaches of bolt connections of a four-stroke, four-cylinder petrol engine are presented, and the related results compared in terms of preprocessing time and accuracy. A full 3D modelling of the bolt connections was preliminarily validated through a comparison with experimental test data available for the whole engine. Two further modelling approaches, a 1D approach and a contact-based (0D) approach, were benchmarked considering their influence on the accuracy for the dynamic analysis of an engine. Each of the three approaches presented pros and cons, even if the 1D modelling could be envisaged as the recommended one in most of cases.

Advances in Vibroacoustics and Aeroacustics of Marine, Aerospace and Automotive Systems

“…Document [9] presented a comparison among FEM simulation procedures for the modelling of the numerous bolt connections of a four-stroke, four-cylinder petrol engine. A full 3D modelling of the bolts was preliminarily validated through a comparison with experimental test data available for the whole engine.…”

Experimental and numerical analysis of bolted two plates using a developed shear theory

“…A two-dimensional asymmetrical model of the bolt connection structure was created and a modification of the standard metric thread profile was made according to the thread load distribution, taking into account certain properties. Giannella et al (2021) carried out finite element analysis by modeling three different connections of bolts that connected various components in gasoline engines. The results were compared in terms of preprocessing time and accuracy.…”