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Adams
The Multibody Dynamics Simulation Solution
Applications in Robotics
Ecda Erol
Haptics & Robotics Lab
Boğaziçi University
Department of Mechanical Engineering
Presentation Outline
• What is Adams?
• Simulation Examples
• Fields of Usage
• Advantages & Disadvantages of Adams
• Restrictions in Free Edition
• Examples of simulations from our project (Demo)
• How to build a system in Adams (Demo)
What is Adams?
• Automated Dynamic Analysis of Mechanical Systems
• Multibody Dynamics Software (MBD)
• Usage: -Study of moving part’s dynamics
-Observation of the distribution of forces through mechanical
system
• Numerical Solvers: Fortran (Formula Translation) & C++
• Compatible with Linux and Microsoft Windows
• A free student edition is available (limitations exist)
Simulation Examples
Figure 1. Car drive simulation. Adapt. from [1] Figure 2. Beam under oscillating force. Adapt. from [1]
Figure 3. Piston cylinder system simulation. Adapt. from [1] Figure 4. Landing gear system simulation. Adapt. from [1]
Fields of Usage
• Landing systems of aircrafts
• Agricultural machinery
• Escalator systems
• Crane systems
• Gear train mechanisms
• Vehicle drive performance
• Roll-over predictions of cars
Figure 5. Gear-train mechanism. Adapt. From [2]
Figure 6. Car drive simulation and its results. Adapt.
from [2]
Advantages of
Adams
• System level simulation (noise effect,
interaction of components etc.)
• Accurate dynamic load predictions
(especially useful for complex systems)
• Flexible bodies are applicable (not only
rigid body simulation)
• Control system integration
(Matlab/Simulink, EASY5)
• More accurate designs are possible
• Compatibility with Nastran
• Money & time saving
Figure 7. Adams Machinery Belt discretized usage. Adapt.
From [2]
Figure 8. A flexible body example. Adapt. From [2]
Disadvantages
• Student edition is too limited
• Open source information is too
limited
• Free learning materials are not
available
• Difficulties in usage for small
scale simulations
• Drawing tools
• User interface
Figure 9. Illustration of complicated coordinate systems in a model.
Restrictions in Education Version
• No more than 20 bodies, including
ground
• Less than or equal to 1000 geometry
curves
• No more than 500 surfaces
• No more than 100 solids
• The sum of all flexible bodies’ nodes
must be no more than 5000 nodes
• Adams Machinery Belt discretized
methods
• Adams Machinery Cable discretized
method
• Adams Machinery Chain [3]
Limitations Impractical
How to use it?
• For illustration, a spring mass damper
system is going to be shown. The spring
mass damper system can be represented as
in figure.
𝑚: 𝑚𝑎𝑠𝑠 𝑜𝑓 𝑡ℎ𝑒 𝑜𝑏𝑗𝑒𝑐𝑡
𝑘: 𝑠𝑡𝑖𝑓𝑓𝑛𝑒𝑠𝑠 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡
𝑐: 𝑑𝑎𝑚𝑝𝑖𝑛𝑔 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡
𝐹 𝑡 : 𝑎𝑝𝑝𝑙𝑖𝑒𝑑 𝑓𝑜𝑟𝑐𝑒
Figure 8. Representation of
spring mass damper system.
Adapt. from [4].
References
1. MSC Software Corp., Adams,
http://www.mscsoftware.com/product/adams, accessed on
22.04.2018.
2. MSC Software, Top 10 Reasons to Start Using Adams,
https://www.youtube.com/watch?v=jvehWzfk52I, accessed on
22.04.2018.
3. MSC Software Corp., Release Notes on Adams 2018.0 Student
Edition, 2018.
4. Chegg.com, http://www.chegg.com/homework-help/questions-and-
answers/problem-consider-spring-mass-damper-system-shown-k-
30-kn-m-m-150-kg-c-15-kns-m-f-t-harmoni-q9173949, accessed on
23.04.2018.
Q&A

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An Overview of Adams Simulation Software in Robotics Applications

  • 1. Adams The Multibody Dynamics Simulation Solution Applications in Robotics Ecda Erol Haptics & Robotics Lab Boğaziçi University Department of Mechanical Engineering
  • 2. Presentation Outline • What is Adams? • Simulation Examples • Fields of Usage • Advantages & Disadvantages of Adams • Restrictions in Free Edition • Examples of simulations from our project (Demo) • How to build a system in Adams (Demo)
  • 3. What is Adams? • Automated Dynamic Analysis of Mechanical Systems • Multibody Dynamics Software (MBD) • Usage: -Study of moving part’s dynamics -Observation of the distribution of forces through mechanical system • Numerical Solvers: Fortran (Formula Translation) & C++ • Compatible with Linux and Microsoft Windows • A free student edition is available (limitations exist)
  • 4. Simulation Examples Figure 1. Car drive simulation. Adapt. from [1] Figure 2. Beam under oscillating force. Adapt. from [1] Figure 3. Piston cylinder system simulation. Adapt. from [1] Figure 4. Landing gear system simulation. Adapt. from [1]
  • 5. Fields of Usage • Landing systems of aircrafts • Agricultural machinery • Escalator systems • Crane systems • Gear train mechanisms • Vehicle drive performance • Roll-over predictions of cars Figure 5. Gear-train mechanism. Adapt. From [2] Figure 6. Car drive simulation and its results. Adapt. from [2]
  • 6. Advantages of Adams • System level simulation (noise effect, interaction of components etc.) • Accurate dynamic load predictions (especially useful for complex systems) • Flexible bodies are applicable (not only rigid body simulation) • Control system integration (Matlab/Simulink, EASY5) • More accurate designs are possible • Compatibility with Nastran • Money & time saving Figure 7. Adams Machinery Belt discretized usage. Adapt. From [2] Figure 8. A flexible body example. Adapt. From [2]
  • 7. Disadvantages • Student edition is too limited • Open source information is too limited • Free learning materials are not available • Difficulties in usage for small scale simulations • Drawing tools • User interface Figure 9. Illustration of complicated coordinate systems in a model.
  • 8. Restrictions in Education Version • No more than 20 bodies, including ground • Less than or equal to 1000 geometry curves • No more than 500 surfaces • No more than 100 solids • The sum of all flexible bodies’ nodes must be no more than 5000 nodes • Adams Machinery Belt discretized methods • Adams Machinery Cable discretized method • Adams Machinery Chain [3] Limitations Impractical
  • 9.
  • 10.
  • 11. How to use it? • For illustration, a spring mass damper system is going to be shown. The spring mass damper system can be represented as in figure. 𝑚: 𝑚𝑎𝑠𝑠 𝑜𝑓 𝑡ℎ𝑒 𝑜𝑏𝑗𝑒𝑐𝑡 𝑘: 𝑠𝑡𝑖𝑓𝑓𝑛𝑒𝑠𝑠 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡 𝑐: 𝑑𝑎𝑚𝑝𝑖𝑛𝑔 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡 𝐹 𝑡 : 𝑎𝑝𝑝𝑙𝑖𝑒𝑑 𝑓𝑜𝑟𝑐𝑒 Figure 8. Representation of spring mass damper system. Adapt. from [4].
  • 12.
  • 13. References 1. MSC Software Corp., Adams, http://www.mscsoftware.com/product/adams, accessed on 22.04.2018. 2. MSC Software, Top 10 Reasons to Start Using Adams, https://www.youtube.com/watch?v=jvehWzfk52I, accessed on 22.04.2018. 3. MSC Software Corp., Release Notes on Adams 2018.0 Student Edition, 2018. 4. Chegg.com, http://www.chegg.com/homework-help/questions-and- answers/problem-consider-spring-mass-damper-system-shown-k- 30-kn-m-m-150-kg-c-15-kns-m-f-t-harmoni-q9173949, accessed on 23.04.2018.
  • 14. Q&A