Finite Element Analysis of Connecting Rod to Improve Its Properties
Journal Title: REST Journal on Emerging trends in Modelling and Manufacturing - Year 2015, Vol 1, Issue 2
Abstract
The main objective of this study was to explore weight and cost reduction optimization for a production forged steel connecting rod. This has entailed performing a detailed load analysis. Therefore, this study has dealt with two subjects, first, Tensile &compressive load and stress analysis of the connecting rod, and second, optimization for weight and cost. In the first part of the study, the loads acting on the connecting rod as a function of stress were obtained. The relations for obtaining the loads for the connecting rod at a given constant speed of the crankshaft were also determined. The static FEA, Eigen buckling FEA was studied. Based on the observations of the static FEA and the load analysis results, the load for the optimization study was selected. The component was optimized for weight and cost subject to fatigue life and space constraints and manufacturability. It is the conclusion of this study that the connecting rod can be designed and optimized under a load range comprising tensile load corresponding to 360o crank angle at the maximum engine speed as one extreme load, and compressive load corresponding to the peak gas pressure as the other extreme load. Furthermore, the existing connecting rod can be replaced with a new connecting rod made of C-70 steel that is 11% lighter and 25% less expensive due to the steel’s fracture crack ability. The fracture crack ability feature, facilitates separation of cap from rod without additional machining of the mating surfaces. Yet, the same performance can be expected in terms of component durability.
Authors and Affiliations
Gajanan Jadhav
Keywords
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- EP ID EP241975
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