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Finite Element Analysis of Optimized Connecting RoD

Author(s):

Mr. Gorane Prathamesh S. , Ph. D. Scholar at Shri Jagdishprasad Jhabarmal Tibrewala University, Jhunjhunu, Rajasthan India; Dr. Kashinath H. Munde , Professor in Mechanical Engineering Department at ABMSPs Anantrao Pawar College of Engineering & Research, Parvati, Pune, Maharashtra, India

Keywords:

Connecting Rod, Static Analysis, Fatigue Analysis, Optimization, Experimental Validation

Abstract

The main objective of this study was to explore weight reduction optimization for connecting rod. It contains a detailed report on load analysis. Therefore, in this study it deals with two subjects, Tensile & compressive load first and stress analysis of the connecting rod and, optimization for weight second. This paper deals with the static and fatigue analysis of the existing design of automotive connecting rod which is having 0.1277 kg of mass. Theoretical fatigue factor of safety of this design is 2.8. The critical area of the connecting rod is the crank end (big end). But this design is having fatigue life nearly equal to 1E008 cycle which is high and can be considered as infinite life. So by studying the connecting rod geometry we can remove some amount of material from it. That means we can modify this existing design to get sufficient life. Sufficient life means in the range of E006 cycles. After the modification in the design the mass of optimized connecting rod is 0.1127 kg. In the same process we have optimized the geometry of the connecting rod. While doing so we have modified the ‘I’ section of existing design. Because of which there will be increase in the stress at the critical location, but this increase in the stress tends to factor of safety of 2.1 and having fatigue life of 1E006which satisfying general criteria of E006 cycles. So by design modification we are offering sufficient life with 0.015 kg mass saving (13.30% weight reduction) with respect to existing design. Experimental validation is done on optimized connecting rod by testing the same on Universal Testing machine which gives the same braking load which is shown by FEA.

Other Details

Paper ID: IJSRDV8I90005
Published in: Volume : 8, Issue : 9
Publication Date: 01/12/2020
Page(s): 14-17

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