Dynamic Analysis of the Structure of Automobile Components, Obtained by Powder Metallurgy

摘要

The analysis of the dynamic behavior of parts from the structure of the cationing mechanism of an internal combustion engine in 4 steps is followed. Thus, kinetic and dynamic models were developed for the motor mechanism considered as an assembly consisting of crankshaft, connecting rods, bearings and pistons. Dynamic models were built mainly in the Ansys program, based on the finite element method. The following problems were addressed, namely the dynamic analysis, with the determination of the response in time for displacements, stresses and deformations and also the vibration analysis in order to analyze the frequency response for the kinematic parameters of the whole system, but also of the component elements. Dynamic models for the numerical processing of the two types of analyzes were designed in a parameterized system with multiple possibilities of working on different time, frequency or different types of loadings and connection conditions. The purpose of this paper is to study the dynamic response of the main elements of the mechanism, for different types of materials. Given the wide field of applicability in automobiles, the technology for obtaining parts from sintered powders, the studies were realized for the cases when the connecting rod and the bearings are made of metallic powders, respectively of steel, to be extended for more complex cases, when we consider the influence of lubricant and temperature distribution in areas of practical interest.