Abstract
An analytic approach is demonstrated to reveal potential pyroshock-driven dynamic effects causing temporary power losses in the Thermo-Electric (TE) module bars of the Mars Science Laboratory (MSL) Multi-Mission Radioisotope Thermoelectric Generator (MMRTG). This study utilizes high-fidelity finite element analysis with SIERRA/PRESTO codes to estimate wave propagation effects due to large-amplitude suddenly-applied pyroshock loads in the MMRTG. A high fidelity model of the TE module bar was created with ∼30 million degrees-of-freedom (DOF). First, a quasi-static preload was applied on top of the TE module bar, then transient tri-axial displacement inputs were simultaneously applied on the preloaded module. The applied displacement inputs were derived from measured acceleration signals during MMRTG shock qualification tests performed at the Jet Propulsion Laboratory. An explicit finite element solver in the SIERRA/PRESTO computational environment, along with a 3000 processor parallel super-computing framework at NASA-AMES, was used for the simulation. The simulation results were investigated both qualitatively and quantitatively. The predicted shock wave propagation results provide detailed structural responses throughout the TE module bar, and key insights into the dynamic response (i.e., loads, displacements, accelerations) of critical internal spring/piston compression systems, TE materials, and internal component interfaces in the MMRTG TE module bar. They also provide confidence on the viability of this high-fidelity modeling scheme to accurately predict shock wave propagation patterns within complex structures. This analytic approach is envisioned for modeling shock sensitive hardware susceptible to intense shock environments positioned near shock separation devices in modern space vehicles and systems.
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Lih, S.-S., Mal, A.K.: Elastodynamic response of a unidirectional composite laminate to concentrated surface loads: Part II. J. Appl. Mech. 59(4), 887–892 (1992)
Mal, A.K., Lih, S.-S.: Elastodynamic response of a unidirectional composite laminate to concentrated surface loads: Part I. J. Appl. Mech. 59(4), 878–886 (1992)
Kotzias, B.: Shock simulation for truss coupled shell structures. In: 55-th International Astronautical Congress, 2004, Vancouver, Canada
Kotzias, B.: Projection method in structural dynamics in application to shock propagation simulation for truss coupled shell structures. In: Proc. European Conference on Spacecraft Structures, Materials and Mechanical Testing 2005, Noordwijk, The Netherlands. vol 581, p. 121, 2005
Kotzias, B., Albus, J.: Pyrotechnique shocks in launch vehicles. In: Proc. 5th European Conference for Aerospace Sciences (EUCASS), Munich, Germany, 2013
Botta, F., Cerri, G.: Shock response spectrum in plates under impulse loads. J. Sound Vib. 308(3), 563–578 (2007)
Duran, A., Hwang, H.-J.: Stochastic shock response spectrum decomposition method. In: Proceedings of the Spacecraft and Launch Vehicle Dynamic Environments Workshop, El Segundo, CA, May 2015
Hamelblau, H., Kern, D.L., Manning, J.E., Pierson, A.G., Rubin, S.: Dynamics environmental criteria. In: NASA Technical Handbook, NASA-HDBK-7005, 4 December 2000
Ramajeyathilagam, K., Vendhan, C.P., Bhujanga Rao, V.: Non-linear transient dynamic response of rectangular plates under shock loading. Int. J. Impact Eng. 24(10), 999–1015 (2000)
Qiu, X., Deshpande, V.S., Fleck, N.A.: Finite element analysis of the dynamic response of clamped sandwich beams subject to shock loading. Eur. J. Mech. A. Solids 22(6), 801–814 (2003)
Lee, A.S., Kim, B.O., Kim, Y.-C.: A finite element transient response analysis method of a rotor-bearing system to base shock excitations using the state-space newmark scheme and comparisons with experiments. J. Sound Vib. 297(3), 595–615 (2006)
Kalman, T., Farzaneh, M., McClure, G.: Numerical analysis of the dynamic effects of shock-load-induced ice shedding on overhead ground wires. Comput. Struct. 85(7), 375–384 (2007)
Mace, B.R., Manconi, E.: Modelling wave propagation in two-dimensional structures using finite element analysis. J. Sound Vib. 318(4), 884–902 (2008)
Liu, T., et al.: The impact of sand slugs against beams and plates: coupled discrete particle/finite element simulations. J. Mech. Phys. Solids 61(8), 1798–1821 (2013)
Pagani, A., et al.: Dynamic response of aerospace structures by means of refined beam theories. Aerosp. Sci. Technol. 46, 360–373 (2015)
Derkevorkian, A., Kolaini, A.R., Peterson, L.: Advanced computational modeling approaches for shock response prediction. In: Proceedings of the 29th Aerospace Testing Seminar, Los Angeles, CA, 2015
Crane, N.K.: Sierra/SM Theory Manual. No. SAND2013-4615. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States), 2013
Thomas, J.D.: Sierra/Solid Mechanics 4.22 User’s Guide. No. SAND2011-7597. Sandia National Laboratories, 2011
Blacker, T.D., Bohnhoff, W.J., Edwards, T.L.: CUBIT Mesh Generation Envi0072onment, vol. 1: Users Manual. No. SAND-94-1100. Sandia National Labs, Albuquerque, NM (1994)
Acknowledgments
The authors would like to thank June Zakrajsek, NASA-Glenn Research Center, RPS Program Planning & Assessment Manager, and Dave Woerner, NASA-Jet Propulsion Laboratory, RTG Integration Manager, RPS Program. The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
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Derkevorkian, A., Peterson, L., Kolaini, A.R., Hendricks, T.J., Nesmith, B.J. (2016). Development of Multi-Physics Dynamics Models for High-Frequency Large-Amplitude Structural Response Simulation. In: Di Miao, D., Tarazaga, P., Castellini, P. (eds) Special Topics in Structural Dynamics, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-29910-5_26
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DOI: https://doi.org/10.1007/978-3-319-29910-5_26
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