A Visualization Solution of the Stress State of Connecting-rod Big End in the Experimental Device for Lubricating Condition of the Connecting-rod Big End Bearing
Main Article Content
Abstract
This paper presents a visualization solution of the stress state of the connecting-rod big end in the experimental device for lubricating of the connecting-rod big end bearing. The connecting-rod model is in photoelastic material that is subjected to the load simulation corresponding to the engine’s operating cycle. This experimental device and the connecting-rod model are used to determine the load diagram, measure the oil film pressure, oil film thickness, oil film temperature. In this study, a visualization system of stress state in the connecting-rod big end is built that stress of connecting-rod is one of the characteristics when we study the connecting-rod big end bearing. The stress state of the connecting-rod is visualized by the transmission photoelasticimetry. This method allows the visualization of the isochrones fringes, which are lines of equal difference regarding the main stress in the connecting-rod. The visualization system consists of a polarizer, two quarter wave blades, and an analyzer. The stress contour’s images of the connecting-rod at different angles of the crankshaft are realized by a CCD camera. The stress state in the connecting-rod is compatible with the load applied.
Keywords
Connecting-rod, bearing, stress, photoelasticimetry, isochrones fringe
Article Details
References
1. Moreau H, 2001, Mesures des Epaisseurs du Film d’Huile dans les Paliers de Moteur Automobile et Comparaisons avec les Résultats Théoriques, Thèse de Doctorat de Université de Poitiers.
2. F.M. Meng, Y.Y. Zhang, Y.Z. Hu, 2007, The effect of compliance on peak oil film pressure in connecting-rod bearing, Tribology International 40, 1089-1099.
3. H. Shahmohamadi, 2014, Big End Bearing Losses with Thermal Cavitation Flow Under Cylinder Deactivation, Tribol Lett (2015).
4. H. Chamani, 2015, Thermo-elasto-hydrodynamic (TEHD) analysis of oil film lubrication in big end bearing of a diesel engine. Vol. 5, No. 1, Autumn–Winter 2015-16.
5. Norbert Lorenz, 2017, Thermal analysis of hydrodynamic lubricated journal bearings in internal combustion engines, Proc IMechE Part K: Journal of Multi-body Dynamics.
6. Tran Thi Thanh Hai, Nguyen Dinh Tan, Luu Trong Thuan, 2019, Influence of the radial clearance on the pressure distribution of the 5S-FE engine’s connecting-rod big end bearing, Journal of Science and Technology Technical University, No. 132 (2019), pp. 40–45.
7. Avril J., 1975, Encyclopédie Vishay d’Analyse des Contraintes, Edition Vishay, Malakoff.
8. Wei-Chih Wang, Photoelasticity, Lecture material, University of Washington.
9. Tran Thi Thanh Hai, 2018, A solution for measuring the oil film pressure of the connecting-rod big end bearing in the experimental device, The University of Danang Journal of Science and Technology, 11/2018 (1), 22–25.
10. Tran Thi Thanh Hai, 2018, A Solution for Creating the Simulating Load on Connecting-Rod in the Experimental Device for Lubricating Condition of the Connecting-Rod Big End Bearing, Journal of Science and Technology Technical University, No. 129, pp. 15–20.
2. F.M. Meng, Y.Y. Zhang, Y.Z. Hu, 2007, The effect of compliance on peak oil film pressure in connecting-rod bearing, Tribology International 40, 1089-1099.
3. H. Shahmohamadi, 2014, Big End Bearing Losses with Thermal Cavitation Flow Under Cylinder Deactivation, Tribol Lett (2015).
4. H. Chamani, 2015, Thermo-elasto-hydrodynamic (TEHD) analysis of oil film lubrication in big end bearing of a diesel engine. Vol. 5, No. 1, Autumn–Winter 2015-16.
5. Norbert Lorenz, 2017, Thermal analysis of hydrodynamic lubricated journal bearings in internal combustion engines, Proc IMechE Part K: Journal of Multi-body Dynamics.
6. Tran Thi Thanh Hai, Nguyen Dinh Tan, Luu Trong Thuan, 2019, Influence of the radial clearance on the pressure distribution of the 5S-FE engine’s connecting-rod big end bearing, Journal of Science and Technology Technical University, No. 132 (2019), pp. 40–45.
7. Avril J., 1975, Encyclopédie Vishay d’Analyse des Contraintes, Edition Vishay, Malakoff.
8. Wei-Chih Wang, Photoelasticity, Lecture material, University of Washington.
9. Tran Thi Thanh Hai, 2018, A solution for measuring the oil film pressure of the connecting-rod big end bearing in the experimental device, The University of Danang Journal of Science and Technology, 11/2018 (1), 22–25.
10. Tran Thi Thanh Hai, 2018, A Solution for Creating the Simulating Load on Connecting-Rod in the Experimental Device for Lubricating Condition of the Connecting-Rod Big End Bearing, Journal of Science and Technology Technical University, No. 129, pp. 15–20.