Abstract
FRP laminates are highly vulnerable to low-velocity impact (LVI) because it induces barely visible impact damage (BVID) inside the structure. This kind of fracture or damages is dangerous to the structure because these damages may go unnoticed ultimately leading to sudden and catastrophic failure of the structure. In this numerical simulation LVI is carried out using LS-DYNA on GFRP laminate impacted by a hemispherical striker of diameter 10 mm. Since in real-life situations structures may not be always constrained from all sides thus in this work behavior of GFRP laminate is examined when one edge (long or short) and opposite edge (long or short) of the laminate are constrained which resemble that of the cantilever and fixed type of beams, respectively. From results, it is observed that GFRP laminate under one short edge-constrained boundary condition showed 31.8% added deflection than one long edge-constrained boundary condition but one long edge boundary condition absorbed more energy than one short edge-constrained boundary condition. In case of two edge-constrained boundary conditions, two short edge-constrained boundary conditions showed partial deflection and partial penetration of the impactor while complete penetration of the striker is observed for two long edge-constrained boundary conditions without any deflection and it absorbed more energy by undergoing damage than two short edge-constrained boundary conditions.
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Mahesh, Singh, K.K. (2019). Numerical Simulation of GFRP Laminate Under Low-Velocity Impact at Different Edge-Constrained Boundary Conditions. In: Singh, I., Bajpai, P., Panwar, K. (eds) Trends in Materials Engineering. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-9016-6_10
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DOI: https://doi.org/10.1007/978-981-13-9016-6_10
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