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Credits

Author: Eka Cahya Prima
Contact: ekacahyaprima@upi.edu

Rolling Cylinders 401 (Advanced Dynamics) by Eka Cahya Prima"

This document investigates highly advanced dynamics of rolling cylinders, incorporating multi-body interactions, external force applications, and energy optimization strategies. It emphasizes the use of simulation and Tracker software to analyze real-time motion data for predictive modeling and applied physics research.

Study Guide:

Objective:

• Analyze the interplay of forces in complex rolling scenarios.
• Explore advanced topics, including rolling under external forces and multi-body dynamics.

Key Concepts:

1. Multi-Body Dynamics:

   • Interaction of multiple cylinders rolling in tandem or collision scenarios.

2. External Forces:

   • Influence of external factors, such as wind or magnetic fields, on rolling motion.

3. Energy Optimization:

   • Strategies for minimizing energy loss and enhancing efficiency in rolling systems.

4. Predictive Modeling:

   • Using motion data to forecast future states of rolling systems under varying conditions.

Experiment Overview:

• Setup:
  Experiments involve rolling cylinders subjected to controlled external forces (e.g., air streams, magnets) and collision scenarios with other rolling objects. High-speed cameras and Tracker software record and analyze the motion.

• Procedure:

  1. Configure experiments with single and multiple cylinders.
  2. Apply external forces and observe their effects.
  3. Conduct collision experiments to study energy transfer.
  4. Record all motion using Tracker for detailed analysis.

• Observation Points:

  • Force-induced deviations in motion paths.
  • Energy loss during collisions.
  • Long-term stability under multi-body conditions.

Questions to Consider:

1. How do external forces alter rolling dynamics?

   • Answer: External forces cause deviations in velocity, trajectory, and rotational behavior based on their magnitude and direction.

2. What occurs during cylinder collisions?

   • Answer: Energy and momentum are redistributed, leading to changes in velocity and direction for all cylinders involved.

3. How can rolling efficiency be optimized?

   • Answer: Reducing surface resistance, enhancing material elasticity, and streamlining cylinder geometry can improve efficiency.

4. What factors influence stability in multi-body systems?

   • Answer: Symmetry, distribution of forces, and interaction points determine the system's overall stability.

5. How does Tracker software enhance these experiments?

   • Answer: Tracker provides detailed kinematic data, enabling precise calculation of velocity, acceleration, and force interactions.

Applications:

• Robotics: Designing efficient rolling systems for mobile platforms.
• Transport Engineering: Improving the dynamics of rolling components in vehicles and conveyors.
• Physics Research: Developing predictive models for complex rolling systems.

FAQ:

1. Why explore rolling dynamics at this level?

   • Advanced studies provide insights into optimizing energy use and stability in real-world rolling systems.

2. What challenges might arise in these experiments?

   • External force application and collision control require precise setups and accurate measurements.

3. Can Tracker simulate external forces?

   • While Tracker itself doesn't simulate forces, it captures motion data that can be analyzed to infer force effects.

4. What are potential real-world benefits of this study?

   • Findings contribute to innovations in engineering, transport, and energy-efficient designs.

5. How do multi-body interactions add complexity?

   • Interactions involve compounded forces and motion variables, requiring sophisticated analysis to fully understand.

Research

http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.4941183 Kinematics investigations of cylinders rolling down a ramp using tracker Eka Cahya Prima1,2,*, Menurseto Mawaddah1, Nanang Winarno1 andWiwin Sriwulan3