Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Author: search.filters.author.Mahesh, V.Subject: search.filters.subject.Natural rubber

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    Study on stacking sequence of plies in green sandwiches for low velocity impact application
    (Trans Tech Publications Ltd ttp@transtec.ch, 2019) Mahesh, V.; Joladarashi, J.; Kulkarni, S.M.
    The present paper deals with optimizing the stacking sequence configuration of flexible green composite for cladding application under low velocity impact regime. Initially six configurations of green composite comprising of jute fiber and natural rubber matrix are considered and their energy absorption behaviour and resistance to impact are studied using finite element analysis. The configurations considered are optimized for energy absorption and maximum contact force under low velocity impact condition. From the results it can be concluded that the variation in energy absorbed and sp. energy absorbed among the configurations are negligible and hence the configurations are prioritized based on contact force. JRJRJ configuration provides maximum contact force followed by JRJ, JRRJ, RJRJR, RJRJ and RJR. The configurations with rank 1, 2 and 3 should be taken into consideration for further analysis. Also the damage study shows that the stacking sequence with jute on impact side is better compared to rubber on impact side as tearing type of damage can be observed in sequences with rubber on impact side and no damage is visible with jute on impact side. © 2019 Trans Tech Publications, Switzerland
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    Parametric study on impact behaviour of sisal and cenosphere reinforced natural rubber-based hybrid composites: FE approach
    (Elsevier Ltd, 2021) Rajkumar, D.; Mahesh, V.; Joladarashi, S.; Kulkarni, S.M.
    This paper aims to study the impact analysis of sisal fiber and cenosphere filler reinforced natural rubber composite using commercially available finite element software. The proposed green composite is studied for impact behaviour by varying the weight percentage of the cenosphere filler particles in a natural rubber sheet. Composite is modelled with stacking sequence sisal-rubber-sisal using finite element software and impacted by three different rigid impactors (Conical, Hemi-spherical and Flat) at the velocity of 8m/s. Modelling and simulation of this proposed composite laminate are solved using the explicit dynamic solver of Abaqus Computer-Aided Engineering Finite Element Modelling. The results of the low-velocity impact of the proposed green composite with sisal-rubber-sisal stacking sequence exhibit better energy absorption by varying the weight percentage of the Cenosphere. Also, the energy absorbed by laminate was more for the Conical impactor than the Hemi-spherical and Flat impactors and the extent of damage is more when impacted by the Flat impactor due to its larger contact area. © 2021 Elsevier Ltd. All rights reserved.