The purpose of this symposium is to discuss novel and efficient methods and techniques for multibody systems and nonlinear dynamics. We welcome contributions on topics such as efficient algorithms and computational strategies, real-time simulation, Human/Hardware-in-the-Loop (HiL) and System-in-the-Loop (SITL) applications, haptics and simulators, co-simulation methods, fluid/structure interaction, reduced order models, and related areas of study.

The symposium welcomes submissions regarding formulations for flexible multibody dynamics, model order reduction methods, dynamics of solids and slender structures undergoing large deformations, floating frame of reference and absolute nodal coordinate formulations, as well as related topics. Contributions to flexible multibody dynamics regarding computational methods, analytical or data-based / machine learning models, as well as industrial and biomechanical applications are also highly welcome.

The "Contact and Interface Dynamics" symposium focuses on recent advances in theoretical, experimental, and computational aspects related to contact, impact, friction, and interface dynamics as they come into play in disciplines such as robotics, automotive, aerospace and biomechanics.

The list of topics of interest includes, but is not limited to, experimental investigations, modeling, numerical techniques and software implementation methods that concern tribology, contact modeling, unilateral constraints, imperfect joints, lubrication, proximity computation, collision detection, granular dynamics, soft soil contact modeling, locomotion on granular materials, terradynamics, impact mechanics, and crush analysis.

Most real-world engineering problems confront behaviors neither linear nor nearly linear. Research is stimulated towards exploring a galaxy of nonlinear dynamics phenomena, terrain for exciting applications that have multiplied throughout engineering, biological ecological sciences, beside the ever-vibrant fields of mechanics and physics. We are witnessing a blossoming of important and exciting new applications far beyond the known restrictions. The Mini Symposium “Nonlinear Dynamics of Structures” invites theoreticians, computationalists, and experimentalists active in the fields of nonlinear dynamics of structures. The MS brings together experts to discuss problems and findings in the area of:

✦Nonlinear Resonances, Phenomena, and Interactions

✦Dynamic Systems with Time-Variability, Delay, or Discontinuities

✦Reduced-Order Modelling

✦Fractional Dynamics

✦Structural Dynamics

✦Flexible slender structures

✦Nonlinear Energy Transfers and Harvesting

✦Vibration and Stability of Systems

✦Computational Methods

✦Optimization and Control

✦Sensitivity Analysis and Design

✦Nonlinear dynamics and fracture of composite structures

Topics of interest include, but are not limited to: vehicle modeling and simulation, tire/terrain and track/terrain interactions, autonomous vehicle mobility, wheel/rail contact, vibration and ride comfort, vehicle control, vehicle stability, suspension and steering designs, hardware-in-the-loop simulation, human factor research, verification and validation (V&V), and next generation simulation tools.

The use of machine learning (ML) in mechanical engineering problems is enabling new possibilities in the field. ML models are intended to shed light on complex dynamic problems that remain unsolved or to ease the calculation in those cases where the classic mechanical models become computationally expensive. This symposium encompasses a wide range of possible mechanical engineering subjects in relation to the application and development of ML. Topics of interest include, but are not limited to:

• ML for dynamics and applications: real-time models and simulation, vehicle dynamics, robotics, biomechanics, structural dynamics.

• System identification and characterization.

• Optimization of dynamic systems through ML.

• Advanced mechanical signal analysis for the definition of meaningful features for ML.

• ML for model reduction in dynamics.

• Application of ML for condition-based and predictive maintenance of mechanical systems.

• Applications of reinforcement learning in control and modelling of dynamic systems.

• Data-driven modelling for dynamic systems.

• Application of physics-based models in ML (model-driven ML).

• Hybrid, data- and model-driven approaches for dynamics.

The purpose of this symposium is to discuss novel methods and techniques for time-delay and time-varying systems. We welcome contributions on recent advances in theoretical, computational, and applied aspects related to topics such as formulations, algorithms and computational strategies for the modeling, analysis and simulation of time-delay and time-varying systems.

Papers in the following areas of time-varying and/or time-delay systems are particularly encouraged:

• models, analytical, numerical, computational, and experimental methods,

• deterministic, stochastic, uncertain systems,

• fractional-order systems,

• qualitative and quantitative analyses,

• continuous, smooth, non-smooth and hybrid systems,

• bifurcations, fast/slow dynamics, quasi-periodicity, chaos,

• vibration suppression and control of dynamical behaviors,

• applications and problems from any discipline of engineering sciences,

• cross-disciplinary topics from, physics, bioscience, medicine, materials, and other related disciplines.

Papers dealing with experimental investigations and phenomena experienced in practical mechanical systems are especially welcome.

Papers are solicited in the areas of motion planning, dynamics, and control of robots and mechanisms. Theoretical, experimental, and computational aspects are all invited. Topics of interest include, but are not limited to:

• Legged and mobile robots

• Serial and parallel robots

• Cable robot and tensegrity mechanism

• Dynamic analysis, modeling, and simulation

• Control methods and controller design

• Trajectory optimization and optimal control

• Applications of machine learning and AI

• Manipulation and locomotion

• Stability and efficiency

The symposium focuses on recent advances in theoretical, computational, and applied aspects related to optimizing the performance and reducing the cost of complex dynamic systems, potentially involving multiple disciplines and phenomena. Topics addressed include design synthesis and analysis, optimal control, sensitivity analysis, uncertainty quantification and verification & validation, multi-objective optimization, optimization under uncertainty, etc.

Submissions are welcome on the following and related topics:

• sensitivity analysis

• optimal design & control

• simulation under model and data uncertainty & optimization under uncertainty

• design of computational experiments

• reduced-order models and surrogate models

• multi-objective and multi-disciplinary optimization

• engineering applications of sensitivity analysis, uncertainty quantification, and/or optimization

• algorithms and tools development.

We welcome contributions on recent advances in theoretical, computational and applied aspects related to multibody biomechanical systems. Natural topics and applications will involve, but are not limited to, the analysis of musculoskeletal systems, nonlinear modeling of biological materials and structures for multibody applications, computational aspects of under- and over-determined biodynamical systems, coupled multi-physics problems and high-performance computing in biomechanics, and many more.

Submissions are welcome on the following and related topics:

• muscular activation dynamics modeling and prediction

• prediction and analysis of human body motion

• inverse kinematics and inverse dynamics problems

• motion reconstruction

• multi-physics (co-)simulation of biomechanical systems

• benchmark problems

• biotribology

• multi-objective and multi-disciplinary optimization

• algorithms and tools development

• human-machine interaction

The symposium is focused on Nonlinear Dynamics of Smart Structures and Systems across different scales, from the nano- to the meso-scale, including nanocomposites and metamaterials-based structures, and the macro-scale, including complex mechanical systems. The relevant systems involve innovative applications in the field of mechanical engineering. Papers are welcome in the area of analytical modeling and numerical simulations of linear and nonlinear dynamic phenomena, numerical and analytical studies on the dynamic stability of systems, wave propagation and absorption, vibration control and experimental characterization of nonlinear dynamic behaviors. The symposium also intends to encourage interactions between theoretical and applied researchers working in the most innovative areas of nonlinear dynamics. The symposium will also be a great opportunity for disseminating recent developments of analytical and numerical techniques, and for discussing novel phenomena and behaviors characterizing smart materials and structures. The symposium “Nonlinear Dynamics of Smart Structures and Systems” will cover, but will not be limited to, the following topics:

- characterization of the dynamic response of smart structures and systems.

- reduced-order modeling of smart structures and systems.

- nonlinear dynamics of continuous and discontinuous mechanical systems.

- analytical and numerical techniques to study the nonlinear dynamics of mechanical systems and structures.

- nonlinear dynamic phenomena and interactions in mechanical systems and structures.

- dynamic stability of nonlinear systems due to multiphysic interaction.

- experimental studies of observed linear and nonlinear dynamic phenomena.

- control of dynamical systems including time delay.

- wave propagation and absorption in smart structures and systems.

- bifurcations and chaos in dynamic systems.

- asymptotic methods in nonlinear dynamics.

- non-smooth systems.

The purpose of this symposium is to discuss novel and efficient methods and techniques for applications that involve multibody systems and nonlinear dynamics. We welcome contributions on recent advances in theoretical, computational, and applied aspects related to topics such as formulations, algorithms and computational strategies for the modeling, analysis and simulation of rotating systems, with specific focus on nonlinear rotordynamics, vibrations, and control.

Papers in the following areas are particularly encouraged:

modeling and analytical methods

nonlinear effects including bifurcation and chaos

vibrations related to bearings and seals

torsional vibrations

stability

modal analysis and identification

cracked rotors

rotor/stator impact and rubbing

monitoring, diagnostics and related signal processing and computational techniques

electromechanical interactions

passive and active control including magnetic bearings

smart material based bearings and dampers

applications to mechanical systems, including power, propulsion, and aerospace.

Papers dealing with experimental investigations and phenomena experienced in practical mechanical systems are especially welcome.