Mechanical Engineering, Engineering, Mechanics of Materials, Computational Mechanics
19
Scopus Publications
Scopus Publications
Design of Flywheel Energy Storage System - A Review Krisnan K, Sriganesh S, Janarthanan Venkatachalam, Harini R, Mithun T N, Sangeetha N 10th International Conference on Electrical Energy Systems Icees 2024, 2024 This paper extensively explores the crucial role of Flywheel Energy Storage System (FESS) technology, providing a thorough analysis of its components. It extensively covers design specifications, control system design, safety measures, disc and bearing selections, and casing considerations. Moreover, it conducts a thorough analysis of flywheel losses, proposing effective mitigation strategies. In terms of design, the paper focuses on optimizing performance and structural integrity by discussing parameters such as size, shape, and material composition. Safety protocols, including containment systems are meticulously addressed to prevent accidents. The selection of discs and bearings is explored in detail, considering factors such as friction and heat dissipation. Similarly, suitable casings are examined to ensure adequate protection and maintenance accessibility. Here, flywheel losses are analyzed, and sources like aerodynamic drag and bearing friction are identified, with suggested methods for minimizing their impact. Furthermore, this paper highlights the versatile applications of flywheels across industries, from renewable energy to transportation, making it a comprehensive guide to harnessing flywheel technology's potential.
Vibration Analysis of Washing Machine under Various Unbalanced Mass Sangeetha N, Kavitha K, Thenmozhi G 2nd International Conference on Advancements in Electrical Electronics Communication Computing and Automation Icaeca 2023, 2023 Vibration is the major concern in the front-loaded type washing machine. A small eccentricity is sufficient to cause large whirls at critical speeds. Therefore, it is very important to find methods of removing or minimizing the imbalance in a rotor. Balancing rotors is therefore the primary task of a rotor dynamics engineer. The unbalance effect in a rotating system is to be studied before balancing any rotor system. In a washing machine, a small magnitude of unbalanced weight will cause major failure in the shaft, bearing, washing drum and suspension system. Hence, this work exhibits an analysis of vibrations on the front loader washing machine during the normal cycle and spin cycle under different unbalancing masses. A test washing machine is being utilized for the examination and analysis. The washing machine is being given a default damper which is given by the manufacturer. A test is being held for different unbalancing masses for excitation of vibrations and the measurements of vibrations are being recorded with the help of Data Acquisition Systems. Then the washing machine is modelled in MATLAB, and it’s performance is compared with the original washing machine’s performance under various unbalanced load conditions.
Design and Validation of Dynamic Characteristics of Vibration of Test Fixture for Automobile Application Sam Vimal Kumar S., S. Kiruthika, N. Sangeetha, K. C. Senthamarai Kannan Aip Conference Proceedings, 2022 Any components in machineries, automobile or aviation fields experience different types and levels of vibrations. The effective design and material selection of a vibration test fixture through Finite Element Analysis (FEA) is the perseverance of this article. It is mandatory to examine the structural dynamic behavior of the components to withstand the excitation forces for proper functioning. During the test, a module is required to maintain the real-world mounting interface to transfer the forces from shaker table/exciter to the DUT is identified as vibration fixture. The design through FE method carried out to realize a vibration fixture to hold two DUTs at a time for testing with the appropriate material and compares the FEA results with the experimental test results. This should be resonance free in test range frequencies with the constraints on mass and size which depends on the shaker table specifications and through FEA, it is found to have the fundamental natural frequency well above the test range as required. Physical testing of the manufactured fixture is carried out and the FEA results are compared & verified with its test results for characteristics like resonance & amplification factor. The FEA results are functional to manufacture the innovated fixture of suitable material with minimum material wastage and cost effective. Also, it can hold two numbers of DUTs in a single test which result in time consumption and quick completion of vibration testing for the automobile application.
Investigation of Sealing Performance with Bolted Flange Joints with Gasket using FEA Method P. Anuj, N. Sangeetha, S. Roshan Ashraf, R. Vasanthkumar, T. Babin International Journal of Vehicle Structures and Systems, 2022 In pressure vessel and pipe systems, gasketed flange joints are quite frequent and are also used in oil and gas wellheads and trees as spool end connections. Flanges are most commonly employed when a joining or disassembling junction is required. The process industry has long been concerned about leakage in gasketed flanged junctions. The installation and stress factors of a gasketed flange joint directly affect its sealing effectiveness. API 6A type 6B flange with a maximum pressure rating of 20,000 psi is examined in this study using API design procedures. Due to the symmetricity of the 8 bolted flange, a 45 section is taken for analysis. The findings of a parametric analysis of flange behaviour and bolt stresses are investigated by altering the bolt preload and internal pressure while keeping other flange independent variables constant.
Thermo-Mechanical Analysis of Girth Welding Process on Flange Pipe Joints using Moving Heat Source Extension N. Sangeetha, R. Arishwaran, A.M. Shreeram, D. Kawinhirthik, T. Babin International Journal of Vehicle Structures and Systems, 2022 This paper forecasts the transient thermal temperature history during girth welding with a single pass over the welded area on pipe ASME class 300 flange joints of low carbon steel using the moving heat source extension model. Using ANSYS ACT extension for the model of the moving, heat source is simulated for the forecast of the distribution of temperature over the welded region during the welding process like gas metal arc welding. Then due to the residual stress induced by the thermal load of the welding, heat source on the joints is analysed and then comparison of the various heat distribution by changing welding parameters is analysed for optimal welding parameters to reduce the stress. The analysis was carried out on transient thermal and transient structural processes to predict the temperature distribution and residual stress respectively.
Intuitionistic fuzzy contra weakly generalized closed mappings International Journal of Advanced Science and Technology, 2020
α-weakly generalized continuous mappings in intuitionistic fuzzy topological spaces International Journal of Advanced Science and Technology, 2020
An investigation of natural frequency for a structural plate using experimental modal analysis and computational fea International Journal of Mechanical and Production Engineering Research and Development, 2019
Study of engine mounts and vibration of three-wheeled vehicles International Journal of Mechanical and Production Engineering Research and Development, 2018
Modal analysis of mwcnt reinforced aa5083 composite material International Journal of Civil Engineering and Technology, 2017
Computer Aided Design Modification and Structural Analysis of Rotavator Blade International Journal of Applied Engineering Research, 2015
