PSI - Issue 14

Akhilesh Kumar Jha et al. / Procedia Structural Integrity 14 (2019) 416–428 Akhilesh Kumar Jha et al. / Structural Integrity Procedia 00 (2018) 000–000

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6. Experimental setup for bird strike The dynamic impact test was carried out using a gas-gun type shooting cannon to study of impact response on the composite target plate. The target plates were secured on a custom-made fixture fabricated using mild steel capable of withstanding the high velocity impact loads from the synthetic bird. The test Plate-1 has been considered for impact with 2lb (0.91 kg) bird. The CAD model of test fixture with target plate and the experimental setup is as shown in Fig. 10 (a) and (b) respectively.

Fig. 10. (a) Test fixture model for bird strike; (b) bird strike on target plate.

It was found that the plate did not fracture due to the impact. A comparison of the obtained experimental and numerical results is further made in order to establish if the proposed models are accurate and valid. 7. Conclusion This research work has been carried out to simulate bird impact damage assessment and get clearances to first flight without any component level destructive testing. In board term, the purpose of our work is to simulate accurately the bird impact, under reference to airframe structural integrity. Through, the analysis the compliance of continued safe flight and landing has been made sure, without going for complex and costly testing. Finite element numerical simulations of the bird impact were carried out by using CEL methodology to represent the bird body. The bird was modelled using the EOS with water properties. Due to the wide use of composite materials in aircraft structures, the progressive damage modelling for woven fabric available as built-in subroutine in Abaqus has been successfully carried out. The numerical simulation of bird strike was validated using experimental test and the results were successfully implemented. So far twenty-five successful flight has been achieved. Acknowledgements The author would like to thank Aeronautical Development Establishment, DRDO, Ministry of defence for providing an opportunity for their support and encouragement in this research work. References Yu Shi, Constantinos Soutis, 2017. Modelling of low velocity impact induced damage in composite laminates. In: Mechanics of advanced materials and modern processes 3:14 DOI 10.1186/s40759-017-0029-x. Sebastian Heimbs, 2012. Computational methods for bird strike simulations: A review: Computers and structures 89, 2093-2112 Ludovic Barriere, Michel Bouquet, Jean-Francois Ferrero, 2017. Bird strike shielding materials: development of a high velocity impact test platform. HAL Id: hal-01537251. Marinko Ugrčić, 2012. Scientific Technical Review. Application of the Hydrodynamic Theory and the Finite Element Method in the Analysis of Bird Strike in a Flat Barrier. Vol.62, No.3-4, pp. 28-37 Sd. Abdul Kalam, R Vijaya Kumar, G Ranga Janardhana. 2015. Impact Behavior of High Velocity Bird on a Flat Barrier. International Journal of Research in Engineering and Applied Sciences, Volume 5, Issue 10.