Hydrodynamic Bearing Performance Trade-Off Study and Fuzzy-Based Multi-Objective Optimization on an Offset Surface Textu
- PDF / 2,492,207 Bytes
- 15 Pages / 595.276 x 790.866 pts Page_size
- 8 Downloads / 155 Views
Hydrodynamic Bearing Performance Trade‑Off Study and Fuzzy‑Based Multi‑Objective Optimization on an Offset Surface Textured Journal Bearing B. Bhasker1,2 · N. Seetharamaiah2 · P. Ramesh Babu1 · S. K. Gugulothu3 Received: 4 September 2020 / Revised: 14 October 2020 / Accepted: 19 November 2020 © Springer Nature Switzerland AG 2020
Abstract The main purpose of this research is to determine the behavior of bearing performance having various operating conditions. Experimental studies are performed to analyze the dynamic characteristics of phosphorous bronze hydrodynamic journal bearing with a surface textured under various loading conditions with multi-grade oil as lubricating at different constant rotational speeds (i.e., 1000 to 4000 rpm). The results indicated that the experimentally obtained oil film pressure and temperature distribution profile were in good agreement with the theoretical results. In this experimental study, Fuzzy-based Taguchi optimization was used to predict the optimal input parameters that result in the optimal temperature combination and stated that the theoretical findings are in good agreement with the oil film pressure and temperature distribution profile obtained experimentally. To maximize the output parameters, this analysis also aims to explain the implementation of the fuzzy logic-based Taguchi analysis. Keywords Trade-off study · Thermal pressure · Temperature · Oil film thickness and multi-objective optimization Abbreviations ECU Electronic control unit EH Extremely high EL Extremely low H High Kg Kilogram L Low M Medium MPCI Multi-performance characteristics index S/N Signal-to-noise
* S. K. Gugulothu [email protected] 1
Department of Mechanical Engineering, University College of Engineering, Osmania University, Hyderabad, India
2
Department of Mechanical Engineering, GITAM School of Technology, Hyderabad, India
3
Department of Mechanical Engineering, National Institute of Technology Andhra Pradesh, Tadepalligudem, India
1 Introduction Non-conventional journal bearings such as lobed bearings and tilting pad bearings, which operate more than one active oil film, account for their superior stiffness and damping characteristics compared to conventional cylindrical journal bearings. Offset-halves journal bearing commonly used as lobed bearings because of the better stability applied in a wide range of industrial applications, i.e., centrifugal water pumps, gearboxes, and dynamic power conversion turbomachinery for space vehicles. Nathiram et al. [1, 2] conducted a numerical investigation on hybrid hydrodynamic journal bearing with micro-polar lubricants to study the performance of orifice compensated non-recessed hole entry leading to increase in the thickness of the fluid and improvement of stiffness and damping coefficient. Qiyin et al. [3] numerically investigated the impact of rotor bearing with different grooves to study the transient lubrication process’s behavior and reported that at any applied load increase in the temperature and eccentricity ar
Data Loading...
