Faculty Publications

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    Stress Analysis of Thin Rectangular Sections Subjected to Twisting Moment
    (Springer, 2024) Joshi, S.V.; Kaliveeran, V.
    The major issue in the stress analysis of thin sections is the stress concentration on the edges, especially the sharp edges. Whilst analysing thin sections for any analysis, be it flexural, torsional, axial etc., the phenomenon of sharp edge stress concentration reduces the quality of results of the analysis. Thus, it becomes necessary to determine the particular loading orientations in order to study the analysis in its purest form without the interventions of other unnecessary behaviours. The present study is about the stress analysis of thin rectangular section, when it is subjected to a twisting moment. A thin rectangular member of dimensions, length = 100 mm, depth = 40 mm, and width = 1 mm is considered with one end of the length as fixed and the other end as free. A torque of magnitude 0.1 Nmm is applied at the free end. Initially, a theoretical analysis is done and the point of maximum shear stress is determined. Then numerical analysis of the same is done on an FEM modelling software with different combinations of loadings in the form of a twisting moment. The determination of the exact load orientation which simulates the pure torsional moment behaviour for a thin rectangular section is the main objective of this study. The results obtained by FEM modelling on the software are validated theoretically and experimentally. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    Experimental Investigation of the Behavior of Tubular T-Joint of Jacket Structures
    (Springer, 2024) Murugan, N.; Kaliveeran, V.; Kundapura, S.
    This study deals with a preliminary experimental study to examine the behavior of tubular T-joint of Jacket structures under compressive load, which is helpful for further study of reinforcement in T-joints for strengthening. A specimen of T-joint with geometric dimensions of chord length = 494 mm, chord diameter = 141 mm, chord thickness = 5 mm, and brace length = 237 mm, brace diameter = 90 mm, brace thickness = 4.5 mm was considered for this study. The specimen is subjected to axial compressive load which is applied from the top end of the brace member. The ends of the chord member are in simply supported condition. The experiment is conducted in a 40 T UTM machine. The loads are applied with an interval of 50 kgf starting from zero to the yield load of 9,600 kgf. The experimental setup, specimen details, and the relevant results (load-deformation relationship and failure mechanism) are presented. The findings of the study, i.e., local joint deformation behavior under compressive load, are presented graphically. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    Comprehensive physical model study on wave transmission at plate structure
    (CAFET INNOVA Technical Society 1-2-18/103, Mohini Mansion, Gagan Mahal Road, Domalguda, Hyderabad 500029, 2011) Shirlal, K.G.; Rao, S.; Varghese, R.V.
    Investigators are increasingly concentrating their focus of research on coastal protection which is shifting from the hard measures to eco-friendly solutions with optimal usage of construction materials. A structure located near the water surface is known to be effective in bringing down the wave activity behind it, since; the energy of the waves is concentrated in the region close to the surface. This paper explains the comprehensive experimental study to evaluate the transmission coefficients (Kt) of various configurations of submerged plate structures. Kt for various plate configurations such as single plate, twin plate and combined plate are obtained. It is found that a single plate inclined at 60° to the horizontal is generally effective i. e. Kt ? 0.6 to a large extent. However, the twin and combined plate structures improved the performance. © 2011 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
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    Dynamic analysis of a porous wall fencing offshore fish cage subjected to regular waves
    (SAGE Publications Ltd, 2024) Shaik, S.; Thuvanismail, N.; Sai Kiran Naik, E.; Vijaykumar, M.
    Global aquaculture is in exponential trend to fulfil the demand for seafood due to the rise in world population. Most countries have implemented nearshore farming and reached their limits, which impacts water quality parameters. Offshore farming is the alternative option to counteract this nearshore farming issue and balance the aquaculture demand and supply. The present study construes on the numerical study of the porous wall fencing offshore fish cage subjected to regular waves. The numerical analysis is carried out for four cages by varying porous hole diameters from 0.5 to 0.7 m and without porosity. All the cages are placed at the same water depth of 200 m, interacting with a constant wave height of 6m with wave periods ranging from 6.92 to 19.05 s. Both frequency and time domain analysis are conducted to study the variation of hydrodynamic parameters, namely added mass, wave excitation forces, radiational potential damping, motion responses, and mooring line tension. Among all cage configurations, the cage with 0.5 m diameter porous hole fencing performs better for all wave conditions considered. Also, a scaled model of 1:75 was considered in both experimental and numerical studies for the purpose of validation. It is learnt that experimental parameters such as motion responses and mooring line tension are in good agreement. © IMechE 2023.