Abstract
Recent research stressed out the limitations of current practices on component level environmental vibration testing. These limitations are typically associated with non-realistic excitation mechanisms and the mechanical impedance mismatch due to differences between the operational and the test boundary conditions. General concern is that the real failure modes of the component are not correctly replicated, and more information might be needed to define a representative test practice. Does the current testing practice provide sufficient information? Is there a way to overcome the impedance mismatch between operational conditions and the test configuration by means of simulations and adequate control strategy for environmental tests? This work presents recent results from an intensive test campaign performed on the Box Assembly with Removable Component (BARC). Limitations of state-of-the-art random vibration testing techniques are investigated and Multiple-Input Multiple-Output Random control strategies are combined with simulation tools to find potential research directions to overcome the limitations. The final goal intends to tackle a rationale, rather than a single specific solution, to assess the design of a testing methodology leading to structural responses which are more representative of the operational environment in terms of potential failure mechanisms.
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References
United States Standard 810G Method 514: vibrations (2008)
United States Standard 810G Method 527.1: multi-exciter tests (2008)
Mršnik, M., Slavič, J., Boltežar, M.: Multi-axial vibration fatigue–a theoretical and experimental comparison. Mech. Syst. Signal Process. 76–77, 409–23 (2016)
Ernst, M., Habtour, E., Abhijit, D., Polhand, M., Robeson, M., Paulus, M.: Comparison of electronic component durability under uniaxial and multiaxial random vibrations. J. Electron. Packag. 137 165–80 (2015)
Gregory, D., Bitsie, F., Smallwood, D.O.: Comparison of the response of a simple structure to single axis and multiple axis random vibration inputs. In: Proceedings of the 79th Shock and Vibration Symposium (2008)
Soucy, Y., Côté, A.: Reduction of overtesting during vibration tests of space hardware. Can. Aeronaut. Space J. 48 77–86 (2002)
Underwood, M.A.: Multi-exciter testing applications, theory and practice. In: Proceedings of Institute of Environmental Sciences and Technology (2002)
Smallwood, D.O.: Multiple shaker random vibration control–an update. In: Proceedings of the Institute of Environmental Sciences and Technology. Institute of Environmental Sciences and Technology, Illinois (1999)
Peeters, B., Debille, J.: Multiple-input-multiple-output random vibration control: theory and practice. Proc. Int. Conf. Noise Vibration Eng. 1, 507–16 (2002)
Smallwood, D.O.: Multiple-input multiple-output (MIMO) linear systems extreme inputs/outputs. Shock. Vib. 14, 107 (2007)
Smallwood, D.O.: Minimum input trace for multiple input multiple output linear systems. J. IEST 56, 57–61 (2013)
Musella, U., D’Elia, G., Carrella, A., Peeters, B., Muchi, E., Marulo, F., Guillaume, P.: A minimum drives automatic target definition procedure for multi-axis random control testing. Mech. Syst. Signal Process. 107, 452–68 (2018)
Alvarez Blanco, M.G., Janssens, K., Bianciardi, F.: Experimental verification of projection algorithms and optimization routines for acoustic field uniformity enhancement in MIMO direct field acoustic control. In: Proceedings of the International Conference on Noise and Vibration Engineering (2016)
Daborn, P.M., Ind, P.R., Ewins, D.J.: Enhanced ground vibration testing for aerodynamic environments. Mech. Syst. Signal Process. 49, 165–80 (2014)
Daborn, P.M., Ind, P.R., Ewins, D.J.: Next-generation random vibration tests. Top. Modal Anal. II 8, 397–410 (2014)
Roberts, C., Ewins, D.J.: Multi-axis vibration testing of an aerodynamically excited structure. J. Vib. Control. 24 (2016)
Smallwood, D.O.: A Random Vibration Control System for Testing a Single Test Item with Multiple Inputs. Technical Report, Sandia National Laboratories, Albuquerque (1982)
Avitabile, P.: Why you can’t ignore those vibration fixture resonances. Sound Vib. 33, 20–27 (1999)
Underwood, M.A., Keller, T.: Recent system developments for multi-actuator vibration control. Sound Vib. 35, 16–23 (2001)
Underwood, M.A., Keller, T.: 8 Actuator system provides 1 DOF to 6 DOF controlled satellite qualification testing up to 100 Hz. In: Proceedings of the 28th Aerospace Testing Seminar (2014)
Appolloni, M., Dacal, R.B., Cozzani, A., Knockaert, R., Thoen, B.: Multi-degrees-of-freedom vibration platform with MIMO controller of future spacecraft testing: and application case for virtual shaker testing. In: Proceedings of the 29th Aerospace Testing Seminar (2015)
Harvie, J., Soine, D.E., Jones Jr, R.J., Skousen, T.J., Schoenherr, T.F., Starr, M.: Boundary conditions in environmental testing round robin. In: Proceedings of the IEST (2018)
Soine, D.E., Jones Jr, R.J., Harvie, J., Skousen, T.J., Schoenherr, T.F.: Designing hardware for the boundary condition round robin challenge. In: Proceedings of the XXXV IMAC Conference (2017)
Larsen, W., Blough, J.R., DeClerck, J.P., VanKarsen, C.D.: Initial modal results and operating data acquisition of shock/vibration fixture. In: Proceedings of the XXXV IMAC Conference (2017)
Rohe, D.P., Smith, S., Brake, M.R.W., DeClerck, J., Alvarez Blanco, M., Schoenherr, T.F., Skousen, T.: Testing summary for the box assembly with removable component structure. In: The Proceedings of the XXXVI IMAC Conference (2018)
Acknowledgements
The authors gratefully acknowledge the MechLav Research Group of the University of Ferrara for providing access to their three-axis shaker, the eng. Giacomo D’Elia for assisting the test campaign. Sandia National Laboratories is gratefully acknowledged for motivating the Boundary Condition Challenge and providing the BARC.
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Musella, U. et al. (2020). Combining Test and Simulation to Tackle the Challenges Derived from Boundary Conditions Mismatches in Environmental Testing. In: Walber, C., Walter, P., Seidlitz, S. (eds) Sensors and Instrumentation, Aircraft/Aerospace, Energy Harvesting & Dynamic Environments Testing, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-12676-6_23
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