Lecture Notes on GIM Software for Mechanism Simulation

Introduction to GIM Software

• Software Name: GIM (Geometry in Motion)
• Source: Available for download on ILEARN website
• Recognition: Acknowledge the university group that developed the software if used for publications or projects.

Comparison with Other Software

1. Adams
   • Traditional approach, very powerful, not currently available in the lab.
2. MotionSolve by Altair Hyperworks
   • Available in Clement Hall lab.
   • Integrated multi-body solutions, free student edition available.
3. Working Model 2D
   • Recommended for purchase ($29 for 6 months, $49 for 12 months).
   • Comes with a textbook that includes examples.

GIM Software Overview

• Purpose: Mechanism analysis software
• Modules:
  • Geometry: Create or download mechanisms from a library.
  • Kinematics: Perform kinematic simulations.
  • Dynamics: Conduct dynamic simulations.
  • Synthesis: Specify desired motion to find corresponding mechanisms.
  • Workspace Analysis: Analyze and study the mechanisms.

Geometry Module

• Creating Mechanisms:
  • Start by creating key points for the mechanism.
  • Example: Create an elliptical machine mechanism.
  • Use the modify icon to adjust key points.
• Creating Links:
  • Select starting and ending points to create links between key points.
  • Insert kinematic pairs (e.g., revolute joints) to connect elements.
  • Ground connections are implied if links end in space.

Kinematics Module

• Types of Motion Analysis:
  • Single Position Analysis
  • Controlled Motion
  • Automatic Motion: Automatically determines possible motion based on input.
• Degrees of Freedom: Updates dynamically as the mechanism is constructed.
• Animation: Ability to visualize the motion of the mechanism as parameters are adjusted.

Synthesis Module

• Functionality: Create mechanisms based on desired motion paths.
• Example: Determining mechanisms that approximate straight line motion.

Conclusion

• GIM is user-friendly and encourages exploration through its tutorials and features.
• Practice with the software is encouraged to master its capabilities.
• Next, synthesis of mechanisms based on specific motion requirements will be discussed in future sessions.