Browsing by Author "Joladarashi, J."

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    FE analysis of FRP pressure vessel
    (Trans Tech Publications Ltd ttp@transtec.ch, 2019) Biradar, S.; Joladarashi, J.; Kulkarni, S.M.
    In this paper the main focus is on analyzing the effect of various parameters like winding angle, winding pattern and fiber volume fraction on the stresses generation in a composite pressure vessel using Finite Element (FE) approach. The present study makes use of three different composite materials namely GFRP (Glass Fiber Reinforced Plastic), CFRP (Carbon Fiber Reinforced Plastic) and AFRP (Aramid Fiber Reinforced Plastic). Further they are compared with metallic pressure vessel (LCS-Low Carbon Steel, Al 6061-T6-Aluminium 6061- T6) to assess their potentiality as a substitute to metallic pressure vessels. Based on Maximum Specific Stress (MSS) results observations it is concluded that optimum parameters suggested for fabrication of pressure vessel are winding angle ±55o, fiber volume fraction, Vf of 0.55 and winding pattern of ((±∅°2)/90°2/(±∅°2)). Following AFRP, CFRP and GFRP provides better performance when compared with LCS and Al 6061 T6 based on MSS value. Considering the availability, cost and application factors it can be concluded that GFRP can be conveniently used as substitute for metallic pressure vessels. © 2019 Trans Tech Publications, Switzerland
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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