NOMAD

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Below is a list of all projects performed at NOMAD over the years.

2014

  • Measurement Guidelines for Structures with Bolted Joints [1]
  • A Numerical Round Robin for Modeling Structures with Frictional Interfaces [2]
  • Quantifying Epistemic and Aleatoric Uncertainty in the Ampair 600 Wind Turbine [3]
  • Assessment of Experimentally Derived and Numerically Derived Reduced-Order Models

2015

  • Effects of Experimental Methods, part 2 [4] [5]
  • Numerical Round Robin, part 2 [6]
  • Quantification of Uncertainty in Lap Joints [7]
  • ROM Assessment [8]
  • Stress Waves Propagating Through Jointed Connections/How Joints Respond to a Shock [9]
  • Structural Design with Joints for Maximum Dissipation [10]
  • Nonlinear Dynamics and Controls of Micro- and Nano-Systems
  • STEM Cross-Cultural Interactions Study [11]

2016

  • In Situ Measurements of Contact Pressure for Jointed Interfaces During Dynamic Loading Experiments [12][13]
  • Sensing and Rating of Vehicle-Railroad Bridge Collision [14]
  • Evaluation of Interface Reduction Methods for Craig-Bampton Models [15]
  • Effect of Far-Field Structure on Joint Properties [16][17]
  • Experimental Assessment of the Influence of Interface Geometries on Structural Response [18]
  • Comparison of Nonlinear System Identification Methods for Free Decay Measurements with Application to MEMS Devices [19]
  • A comparison of numerical approaches for predicting the dynamics of a beam with a lap joint [20]
  • Designing brittle fracture specimens to investigate environmentally assisted crack growth [21][22]

2017

  • Inverse Methods for Characterization of Contact Areas in Mechanical Systems [23]
  • From Macroscopic Tensile Tests to Microscopic Mechanical Response of Components
  • Investigation of Craig-Bampton Models with Interface Reduction for Contacting Surfaces [24][25]
  • Influence of Edge Boundary Conditions and Cracks in Ferroelectrically-Excited Vibrational Modes [26]
  • Experimentally Characterize a new Benchmark Structure for Prediction of Damping Nonlinearity [27]
  • Measurements of Coupled Structural-Acoustic Modes [28]

2018

  • Constructing Optimal Surrogate Models for Bolted Fasteners in Multiaxial Loading
  • Influences of Modal Coupling on Experimentally Extracted Nonlinear Modal Models [29]
  • A Priori Methods to Assess the Strength of Nonlinearities for Design Applications [30]
  • Fatigue Properties of Additively Manufactured Hiperco
  • Material Failure Model and Properties for Puncture Simulations [31]
  • Predictive Structural Dynamics Modeling of Bolted Interfaces [32][33]

2019

  • Mechanics of bolt loosening under dynamic loads [34]
  • Investigation of electrical contact chatter in pin-receptacle contacts
  • Force reconstruction at mechanical interfaces [35]
  • Modeling and experimental validation of a pylon subassembly mockup with multiple nonlinearities [36]
  • Development of reactive potentials for molecular dynamic simulations
  • Indentation of heterogeneous materials: Factors affecting the indentation results and a comparison to bulk material testing
  • Validation of puncture simulations with various probe geometries

2020

  • NNM Force Appropriation Pre-Test Predictions of Assembly using Calibrated Component and Modal Shaker Models
  • Correlation of Reduced-Order Models of a Threaded Fastener
  • Nonlinear Analysis of Mechanical Joints in Finger-Like Mechanism-Based Morphing Wing Devices
  • Neural Network Informed Uncertainty Quantification for Structural Dynamics Reduced-Order Models

2021

  • Nonlinear Characterization of a Joint Exhibiting a Reduction in Damping at High Energy
  • Empirical Model of Puncture Energy for Metals
  • Mapping from Low Fidelity to High Fidelity Analysis for Failure Quantities of Interest
  • Modeling Rate Dependent Interface Separation with Cohesive Zone Models and Bulk Viscoelasticity
  • Investigating the Potential of Electrical Connection Chatter Induced by Structural Dynamics
  • Nonlinear Transient Response of Electromechanical Assemblies

References

  1. ↑ S. Smith, J. C. Bilbao-Ludena, S. Catalfamo, M. R. W. Brake, P. Reuß, and C. W. Schwingshackl, "The Effects of Boundary Conditions, Measurement Techniques, and Excitation Type on Measurements of the Properties of Mechanical Joints," Cham, 2016: Springer International Publishing, in Nonlinear Dynamics, Volume 1, pp. 415-431.
  2. ↑ L. Salles, C. Swacek, R. M. Lacayo, P. Reuss, M. R. W. Brake, and C. W. Schwingshackl, "Numerical Round Robin for Prediction of Dissipation in Lap Joints," Cham, 2016: Springer International Publishing, in Nonlinear Dynamics, Volume 1, pp. 53-64.
  3. ↑ B. A. Robertson, M. S. Bonney, C. Gastaldi, and M. R. W. Brake, "Quantifying Epistemic and Aleatoric Uncertainty in the Ampair 600 Wind Turbine," Cham, 2015: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 125-138.
  4. ↑ S. Catalfamo et al., "Effects of Experimental Methods on the Measurements of a Nonlinear Structure," Cham, 2016: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 491-500.
  5. ↑ S. A. Smith, M. R. W. Brake, and C. W. Schwingshackl, "On the Characterization of Nonlinearities in Assembled Structures," Journal of Vibration and Acoustics, vol. 142, no. 5, 2020, doi: 10.1115/1.4046956.
  6. ↑ J. Gross et al., "A Numerical Round Robin for the Prediction of the Dynamics of Jointed Structures," Cham, 2016: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 195-211.
  7. ↑ M. S. Bonney, B. A. Robertson, M. Mignolet, F. Schempp, and M. R. Brake, "Experimental Determination of Frictional Interface Models," Cham, 2016: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 473-490.
  8. ↑ D. R. Roettgen et al., "A Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring," in The Mechanics of Jointed Structures: Recent Research and Open Challenges for Developing Predictive Models for Structural Dynamics, M. R. W. Brake Ed. Cham: Springer International Publishing, 2018, pp. 465-489.
  9. ↑ R. C. Flicek, K. J. Moore, G. M. Castelluccio, M. R. W. Brake, T. Truster, and C. I. Hammetter, "Stress Waves Propagating Through Bolted Joints," Cham, 2016: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 501-509.
  10. ↑ M. Stender, A. Papangelo, M. Allen, M. Brake, C. Schwingshackl, and M. Tiedemann, "Structural Design with Joints for Maximum Dissipation," Cham, 2016: Springer International Publishing, in Shock & Vibration, Aircraft/Aerospace, Energy Harvesting, Acoustics & Optics, Volume 9, pp. 179-187.
  11. ↑ B. M. Arviso, C. L. Croessmann, J. E. Fachko, R. W. Hatton, M. R. W. Brake, and D. B. Rizzo, "Cultural Perspective of the 2015 Nonlinear Mechanics and Dynamics Summer Research Institute," SAND2015-7027, Sandia National Laboratories, Albuquerque, NM, August 2015.
  12. ↑ M. R. W. Brake, J. G. Stark, S. A. Smith, D. P. T. Lancereau, T. W. Jerome, and T. Dossogne, "In Situ Measurements of Contact Pressure for Jointed Interfaces During Dynamic Loading Experiments," Cham, 2017: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 133-141.
  13. ↑ T. Dreher, M. R. W. Brake, B. Seeger, and M. Krack, "In situ, real-time measurements of contact pressure internal to jointed interfaces during dynamic excitation of an assembled structure," Mechanical Systems and Signal Processing, vol. 160, p. 107859, 2021, doi:https://doi.org/10.1016/j.ymssp.2021.107859.
  14. ↑ S. Vemuganti et al., "Sensing and Rating of Vehicle–Railroad Bridge Collision," Cham, 2017: Springer International Publishing, in Dynamics of Civil Structures, Volume 2, pp. 227-234.
  15. ↑ D. Krattiger et al., "Interface reduction for Hurty/Craig-Bampton substructured models: Review and improvements," Mechanical Systems and Signal Processing, vol. 114, pp. 579-603, 2019, doi: https://doi.org/10.1016/j.ymssp.2018.05.031.
  16. ↑ M. Brake, C. Schwingshackl, and P. Reuß, "Observations of variability and repeatability in jointed structures," Mechanical Systems and Signal Processing, vol. 129, pp. 282-307, 2019.
  17. ↑ S. B. Cooper et al., "Effect of Far-Field Structure on Joint Properties," Cham, 2017: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 63-77.
  18. ↑ T. Dossogne et al., "Experimental Assessment of the Influence of Interface Geometries on Structural Dynamic Response," Cham, 2017: Springer International Publishing, in Dynamics of Coupled Structures, Volume 4, pp. 255-261.
  19. ↑ V. Ondra, R. Riethmueller, M. R. W. Brake, C. W. Schwingshackl, P. M. Polunin, and S. W. Shaw, "Comparison of Nonlinear System Identification Methods for Free Decay Measurements with Application to MEMS Devices," Cham, 2017: Springer International Publishing, in Sensors and Instrumentation, Volume 5, pp. 29-46.
  20. ↑ R. Lacayo et al., "Nonlinear modeling of structures with bolted joints: a comparison of two approaches based on a time-domain and frequency-domain solver," Mechanical Systems and Signal Processing, vol. 114, pp. 413-438, 2019.
  21. ↑ S. Aduloju, W. Gu, T. Truster, J. Emery, D. Reedy, and S. J. Grutzik, "Designing Brittle Fracture Specimens to Investigate Environmentally Assisted Crack Growth," Cham, 2018: Springer International Publishing, in Fracture, Fatigue, Failure and Damage Evolution, Volume 7, pp. 25-33.
  22. ↑ S. J. Grutzik, S. Aduloju, T. Truster, and E. D. Reedy, "Residually Stressed Bimaterial Beam Specimen for Measuring Environmentally Assisted Crack Growth," Experimental Mechanics, vol. 61, no. 2, pp. 411-418, 2021, doi: 10.1007/s11340-020-00659-5.
  23. ↑ M. Fronk et al., "Inverse Methods for Characterization of Contact Areas in Mechanical Systems," Cham, 2019: Springer International Publishing, in Nonlinear Dynamics, Volume 1, pp. 45-56.
  24. ↑ P. J. Hughes and R. J. Kuether, "Nonlinear Interface Reduction for Time-Domain Analysis of Hurty/Craig-Bampton Super elements with Frictional Contact," Journal of Sound and Vibration, vol. 507, p. 116154, 2021, doi: https://doi.org/10.1016/j.jsv.2021.116154.
  25. ↑ P. J. Hughes, W. Scott, W. Wu, R. J. Kuether, M. S. Allen, and P. Tiso, "Interface Reduction on Hurty/Craig-Bampton Substructures with Frictionless Contact," Cham, 2019: Springer International Publishing, in Nonlinear Dynamics, Volume 1, pp. 1-16.
  26. ↑ J. Ortiz, G. Davis, K. Troyer, and P. Heyliger, "The Influence of Edge Boundary Conditions and Cracks on Vibrational Modes of Multilayer Ceramic Capacitors," Cham, 2019: Springer International Publishing, in Topics in Modal Analysis & Testing, Volume 9, pp. 79-89.
  27. ↑ A. Singh et al., "Experimental Characterization of a New Benchmark Structure for Prediction of Damping Nonlinearity," Cham, 2019: Springer International Publishing, in Nonlinear Dynamics, Volume 1, pp. 57-78.
  28. ↑ D. Fowler, G. Lopp, D. Bansal, R. Schultz, M. Brake, and M. Shepherd, "Experimental Demonstration of a Tunable Acoustoelastic System," Cham, 2019: Springer International Publishing, in Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7, pp. 179-189.
  29. ↑ B. J. Moldenhauer et al., "Influences of Modal Coupling on Experimentally Extracted Nonlinear Modal Models," Cham, 2020: Springer International Publishing, in Nonlinear Structures and Systems, Volume 1, pp. 189-204.
  30. ↑ E. Rojas et al., "A Priori Methods to Assess the Strength of Nonlinearities for Design Applications," Cham, 2020: Springer International Publishing, in Nonlinear Structures and Systems, Volume 1, pp. 243-246.
  31. ↑ N. Bieberdorf, Z. Towner, N. B. Hubbard, and W. Gerstle, "An Evaluation of Different Plasticity and Failure Laws in Simulating Puncture in 7075-T651 Aluminum," SAND2018-9205, Sandia National Laboratories, Albuquerque, NM, August 2018.
  32. ↑ A. R. Brink, R. J. Kuether, M. D. Fronk, B. L. Witt, and B. L. Nation, "Contact Stress and Linearized Modal Predictions of As-Built Preloaded Assembly," Journal of Vibration and Acoustics, vol. 142, no. 5, 2020, doi: 10.1115/1.4046957.
  33. ↑ M. Fronk et al., "Predictive Modeling of Bolted Assemblies with Surface Irregularities," Cham, 2020: Springer International Publishing, in Nonlinear Structures and Systems, Volume 1, pp. 247-258.
  34. ↑ M. Miller et al., "Bolt Preload Loss Due to Modal Excitation of a C-Beam Structure," Cham, 2021: Springer International Publishing, in Nonlinear Structures & Systems, Volume 1, pp. 203-214.
  35. ↑ D. Fowler, P. Logan, and P. Avitabile, "Force Reconstruction at Mechanical Interfaces Using a Modal Filtering Decomposition Approach," Experimental Techniques, 2021, doi: 10.1007/s40799-021-00467-z.
  36. ↑ C. Ligeikis, A. Bouma, J. Shim, S. Manzato, R. J. Kuether, and D. R. Roettgen, "Modeling and Experimental Validation of a Pylon Subassembly Mockup with Multiple Nonlinearities," Cham, 2021: Springer International Publishing, in Nonlinear Structures & Systems, Volume 1, pp. 59-74.
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