TMD2023

Wednesday, August 2nd

Session 1 Modeling Jointed Structures Technical Session

• Welcome Address

Erhan Ferhatoglu, Johann Groß, and Malte Krack, "Frequency response variability in friction-damped structures due to non-unique residual tractions: Obtaining conservative bounds using a Nonlinear-Modebased approach"

• Matthew S. Allen, Carson Wynn, Cameron Stoker, Jacob Capito, and Sam Clawson "Modeling Discrete Joints at Various Preloads with Iwan Elements"

Junior Keynote

• Keegan Moore, "Mechanics of Loosening Bolts and Reduced-order Modeling"

Panel Discussion

Title "What Keeps Industry Up at Night? Upcoming Challenges in Jointed Structures"

Panelists

Joel Sills, National Aeronautics and Space Administration, TX, USA

Dan Brown, Atomic Weapon Establishment, UK

Evan Saunders, Sandia National Laboratories, NM, USA

Trevor Jerome, Naval Surface Warfare Center, MD, USA

Session 2 Jointed Structures Experiments Technical Session

• Shabarish Sriraman, Hugh Goyder, Daniel Brown, and Phil Ind, "Improving Sample Gripping For The Characterisation Of Dynamic Material Properties"
• Matti Mitropoulos and David Nowell, "Experimental investigation of damping behaviour in under-platform dampers"

Thyursday, August 3rd

Tribomechadynamics Research Camp Presentations Technical Session

• Daily Overview
• Arati Bhattu, Gianmarco Zara, Yi-Chun Lo, Erhan Ferhatoglu, Matthew Brake, and Malte Krack, "Effects of Non-Unique Residual Traction on the Non-Repeatability of the Dynamics of Jointed Structures"
• Cengizhan Taslicay, Serena Occhipinti, Victor Clerc, Jessica Herbert, Celso do Cabo, Zhu Mao, Christoph Schwingshackl, and Matthew Brake, "Quantitative Measurements with Phase-Based Motion Magnification for Nonlinear Structures"
• Michael Lengger, Sina Safari, Alexandre Spits, Josh Blackham, JP Noel, Matt Allen, and Matthew Brake, "System Identification with Multiple Data Sets"

Student Paper Competition

Serena Occhipinti, "A New Methodology for Leveraging Low-Frequency Stereo-Camera Systems in High-Frequency Nonlinear Vibration Analysis"

Session 3 Contact Mechanics in Jointed Structures Technical Session

• Cengizhan Taslicay and Matthew R.W. Brake, "Exploring Single Asperity Effects in Contact Mechanics: A Finite Element Analysis of Isolated Roughness and Influential Parameters"
• Myles Kelly and David Nowell, "Modelling of under-platform dampers in gas turbines"

Part 1

Part 2

Panel Debate

Title Tribomechadynamics Debate: "In nonlinear system identification, what does the backbone response of a structure even mean?"

Panelists

Matthew Brake, Rice University, TX, USA

Matthew Allen, Brigham Young University, UT, USA

Christoph Schwingshackl, Imperial College London, UK

Friday, August 4th

Session 4 Nonlinear System Identification Technical Session

• Daily Overview
• Sheng-Wei Tseng, Hugh Goyder, and Yum Ji Chan, "Preliminary investigation of Amplitude-dependent Modal Parameters Idenfication on Structures with close natural frequencies"
• Ashish Pal and Satish Nagarajaiah, "Unscented Kalman filter based sparsity-promoting algorithm using novel selective thresholding and penalty-based model selection for system identification of non-linear dynamic systems"
• Hugh Goyder, "Determining differential equations from measured decay responses for nonlinear systems"

Part 1

Part 2

Senior Keynote

Robert Jackson, "Multiphysics Modeling of the Resistance across Rough Lubricated Contacts"

Session 5 Ultrasonics and Piezoelectrics for Use in Studying Jointed Structures

• Drithi Shetty, Risto Djishev, Jonah Wagner, and Matthew Brake, "Roving Ultrasound Test for In-situ Contact Stiffness Measurement"
• Tong Wei, Alfredo Fantetti, Frederic B. Cegla and Christoph W. Schwingshackl, "Ultrasound Measurements to Monitor the Contact Condition in a Steel-to-Steel Sliding Joint"
• Gangbing Song, "Bolt connection looseness monitoring using piezoceramic transducers"

Session 6 Nonlinear Dynamics

• Justin H. Porter and Matthew R. W. Brake, "Tracking Superharmonic Resonances in Frictional Systems"
• Hugh Goyder, "Exploring nonlinear systems on the complex plane by looking into the forbidden zone"
• Brian Evan Saunders, Andrew Steyer, and Robert J. Kuether, "Machine learning for event detection in non-smooth initial value problems"