186 M. J. Harris and R. E. Christenson Fig. 19.3 A comparison of reaction force profiles for the Fixed and RTHS test scenarios 19.4 Conclusions Experimental testing of parachute deployment with the Real-Time Hybrid Substructuring technique shows clear differences between the fixed-base (Fixed) and coupled (RTHS) scenarios. In particular, test results show a decrease in the peak reaction force observed during the RTHS case when compared to the fixed case. In addition, the RTHS scenario shows an increase in the duration of the impulse compared to the force profile observed in the fixed-base scenario. Further processing and analysis is underway to understand and justify these results. References 1. Harris, C.M., Piersol, A.G.: Harris’ Shock and Vibration Handbook, 5th edn. McGraw-Hill, New York (2002) 2. Ryschkewitsch, M.G.: National Aeronautics and Space Administration. Pyroshock test criteria: NASA-STD-7003A, Washington, DC (2011) 3. Harris, M.J., Christenson, R.E.: Experimental test of spacecraft parachute deployment using real-time hybrid substructuring. In: Conference Proceedings of the Society for Experimental Mechanics Series, pp. 67–70 (2018) 4. Blakeborough, A., Williams, M.S., Darby, A.P., Williams, D.M.: The development of real-time substructure testing. Philos. Transact. A Math. Phys. Eng. Sci. 359(1786), 1869–1891 (2001) 5. Botelho, R.M.: Real-time hybrid substructuring for marine applications of vibration control and structural acoustics. Ph.D. Thesis, Department of Civil, and Environmental Engineering, University of Connecticut (2015) 6. Nakashima, M., Kato, H., Takaoka, E.: Development of real-time pseudo dynamic testing. Earthquake Eng Struct Dyn. 21, 79–92 (1992) 7. Mahin, S.A., Shing, P.B.: Pseudodynamic method for seismic testing. J Struct Eng. 111(7), 1482–1503 (1985) 8. Stehman, N., Nakata, N.: Experimental investigation of inertial force control for substructure shake table tests. In: World Conference on Earthquake Engineering, Lisbon, Portugal (2012)
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