Examples

Tutorials

(see the tutorials for details):

• rigidbody.
• rigidpendulum.
• cantilever1.
• cantilever1piezo.
• cantilever5 (also needs beam.nod and beam.elm).
• actuator.
• speedcontrol.
• rigidhelicopter.
• rigidhelicopter2: same as rigidhelicopter, but with swashplate.

IFToMM Multibody Technical Committee Benchmark Problems:

• Double parallelogram (problem description)
• Spatial Rigid Slider-crank Mechanism (problem description)
• Andrew’s Squeezer Mechanism (problem description)

Dymore Benchmark Problems:

• Princeton beam experiments (problem description)
• Four bar mechanism (problem description) (movie)
• Lateral buckling (problem description) (movie) (static analysis movie)
• Rotating shaft (problem description) (movie)

Misc:

• chain: falling rigid 4 links chain.
• modalextsocket.tar.gz: examples of socket-based tight coupling by external modal forces using C test tool.
• motioncapture.tar.gz: example of motion capture. Two sensors are attached by springs to a constrained system. The motion of the sensors is prescribed; their location is updated to minimize motion mismatch.
• pendulum: simple pendulum.
• pid: simple PID controller example.
• planemech: simple plane mechanism.
• privdataoutput: example of private data output.
• rotationalspring.
• socket.tar.gz: examples of socket-based tight coupling by external forces using C (and C++ and F77) test tools.
• springmass.tar.gz: example of tightly coupled cosimulation directly in python, optionally wrapped through Matlab using pymex.
• ssbeam.tar.gz: example of hand-made modal element representing a simply supported beam, subjected to gravity.
• stream-springmass.tar.gz: example of loosely coupled cosimulation between two instances of MBDyn or between an instance of MBDyn and a Python script.
• wire: eigenanalysis of a wire with pretension.
• slidercrank: rigid and deformable slider crank examples (the rigid case is also used in this tutorial for the mbdyn-blender postprocessing tool).

Applications:

• AS330 Puma.
• modalbody: example modal element (also needs hand-made-dynamic.fem and hand-made-static.fem ).
• HA145B: unsteady aerodynamics modal element.
• HALEcantilever: cantilevered HALE wing model.
• hale: HALE wing model with pseudo-control.
• tm4760: rotating blade eigenanalysis example from NASA TM4760 (broken?)
• tnd371: rotating blade eigenanalysis example from NASA TN-D371 (broken?)
• cart0: aeroelastic model of NREL’s CART wind-turbine (updated April 10, 2010).
• NREL 5MW: NREL’s 5MW class wind turbine. Contributed by Pay Thorben Sacknieß (more details here).
• triangle: control constraint of a simple manipulator, based on the movie presented by Prof. Betsch at the 1st ESA Workshop on Multibody Dynamics for Space Applications, February 2-3, 2010, ESA/ESTEC, Noordwijk, The Netherlands. See a movie of MBDyn’s analysis animated with EasyAnim.
• curved beam: eigenanalysis of a curved beam; uses arpack. Courtesy of Resch Reinhard.
• semitrailer: 22 wheel vehicle model. Courtesy of Louis Gagnon. See a movie of MBDyn’s analysis animated with Blender.
• cycloidal rotor. Courtesy of Louis Gagnon.