Optimizing the Design of Connecting Rod under Static and Fatigue Loading
The main objective of this work is to re-optimize the existing design of connecting rod of universal tractor (U650) by changing some of the design variables. The existing design performs modelling and evaluates critical regions in the connecting rod under fatigue loading. In the present work, the model is developed, analyzed and designed using CATIA 19, PRO-E and ANSYS workbench v12. Optimization of connecting rod is done under same boundary and loading conditions for variation in the few stress and fatigue parameters i.e. stresses, weight, life, damage, bi-axiality indication and safety factor. The allowable numbers of cycles under fully reversed fatigue loading are increased and assumed up to a maximum limit of 10 cycles. Stress concentration coefficient is varied to obtain the maximum cycles condition. The critical regions under both static and fatigue analysis are identified and improved. The connecting rod is modelled and optimized for the reduced weight, improved life and manufacturability. The results obtained from performed analysis can be used to modify the design of existing connecting rod, so that better performance i.e. reduced inertia, fatigue life and manufacturability can be obtained under varying static and fatigue conditions.
Analysis & Optimization of Connecting Rod
The main objective of this study was to explore weight reduction opportunities for a production forged steel connecting rod. This has entailed performing a detailed load analysis. Therefore, this study has dealt with two subjects, first, static load stress analysis of the connecting rod, and second, optimization for weight. In this project, finite element analysis of single cylinder four stroke petrol engine is taken as a case study, Structural systems of connecting rod can be easily analyzed using Finite Element techniques. So firstly a proper Finite Element Model is developed using Cad software Pro/E Wildfire 3.0. Then the Finite element analysis is done to determine the von Mises stresses in the existing connecting rod for the given loading conditions using Finite Element Analysis software ANSYS WORKBENCH 9.0. In the first part of the study, the static loads acting on the connecting rod, after that the work is carried out for safe design. Based on the observations of the static FEA and the load analysis results, the load for the optimization study was selected. The results were also used to determine degree of stress multiaxiality, and the fatigue model to be used for analyzing the fatigue strength. Outputs include fatigue life, damage, factor of safety, stress biaxiality, fatigue sensitivity. The component was optimized for weight subject to fatigue life and space constraints and manufacturability.
The Three-Dimensional Fine-Analysis for the Connecting Rod of High-Power Diesel Engines
As a key saaembly of a diesel engine, the connecting rod plays an important role in (engine's) performances improving and power output. By using MSC/MARC and the three-dimensional contact method, the stredd-field and displacement-field of the G32 type engine are simulated. Through the analysis, the improving measures to reduce the mechanical load as well as the stress are presented.