1. Overall description of the problem
The four-bar mechanism is a study of the coupled bending-torsion coupled behavior of a simple four-bar mechanism rotating at a constant angular velocity.
2. Input file
The input file for Dymore 4.0 is available in two formats
- A plain text version of the input file, and
- A web version of the input file.
3. Numerical results
Numerical predictions can be downloaded here for the four-bar mechanism problem. Each archive (in .zip format) contains the following information.
- An Octave script for plotting (.m file),
- Existing numerical predictions (.dat files).
The following data is available.
- The component of angular velocity about unit vector i_{3}, denoted ω_{3}, at the mid-span of Bar 1. (zip),
- The component of axial force in the material basis, denoted F_{1}, at the mid-span of Bar 1. (zip),
- The component of bending moment about unit vector e_{2} in the material basis, denoted M_{2}, at the mid-span of Bar 1. (zip),
- The component of linear velocity along unit vector i_{1}, denoted V_{1}, at the mid-span of Bar 1. (zip),
- The rotation of Bar 2 at point C, denoted ϕ. At point C, the Euler angles (sequence 3-1-2) of Bar 2 in the inertial basis are computed and the first angle of the sequence is plotted. (zip),
- The component of displacement along unit vector i_{1}, denoted U_{1}, at point C. (zip),
- The relative rotation at the revolute joint at point D. (zip).
4. Movies
The visualization of this benchmark problem simulated by Dymore 4.0 was captured on screen using camstudio.
- Visualize the movie in you browser (Be patient 1.9Mb file), or
- Download a zip archive of the avi file containing the same movie (Be patient 10.6Mb file).