Prediction For Residual Fatigue Life Of Connecting Rod And Research On Its Remanufacturability

With the rapid development of the manufacturing, energy and environmental problems have already been concerned issues for human beings. Automobile industry which is one of the most resource consumption and environmental pollution sources, its yields and maintains proliferate continuously with the End-of-life vehicles (ELVs) followed. If the ELVs are disposed improperly, it can waste huge of resources and greatly pollute environment. How to convert wastes into resources, promote development of sustainable economy, has been one of hot topics in our society.One important technical issue is whether the residual fatigue life of products meeting the needs of its next life cycle. This paper analyzes the failure mechanism of the connecting rod, establishes its three-dimensional model, uses dynamic simulation software ADAMS to calculate its time-load spectrum of the connecting rod; uses finite element analysis software ANSYS to get local stress-strain distribution; uses the traditional anti-fatigue methods to calculate the condition limited fatigue strength, and then based on Miner fatigue damage theory and the stress of the connecting rod to make analysis, finally, uses Goodman fatigue theory to get fatigue strength and to estimate its total fatigue life, combined with its historical service time to predict its residual fatigue life. Provide reliable data to support how to calculate the residual fatigue life of these parts.Based on domestic and abroad research status on remanufacturing, this paper expounds the five key steps of remanufacturing in details, demonstrates its feasibility to carry out remanufacturing of connecting rod in technology and in economy. In addition, this paper gives some advice on how to further promote the economy in remanufacturing of connecting rod.