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:

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.
flexible four-bar linkage Contributed by Reinhard Resch. See a movie.
nonlinear hyperviscoelasticity using MFront’s Signorini model. Contributed by Reinhard Resch.
slender twisted bar. Contributed by Reinhard Resch.
rolling ring made of hyperelastic material subject to large deformations, contact and friction. Contributed by Reinhard Resch.
Cook’s membrane benchmark using fully incompressible hyperelastic material. Contributed by Reinhard Resch.
double elasto-hydrodynamic analysis of a journal plain bearing - pressure distribution. Contributed by Reinhard Resch.
double elasto-hydrodynamic analysis of a journal plain bearing - deformations. Contributed by Reinhard Resch.
Norman Owen Freund 1995 EHD diaphragm plain bearing - deformations. Contributed by Reinhard Resch.
Norman Owen Freund 1995 EHD diaphragm plain bearing - fractional film content. Contributed by Reinhard Resch.
Norman Owen Freund 1995 EHD diaphragm plain bearing - pressure. Contributed by Reinhard Resch.
large deflection analysis of a cantilever beam using. Contributed by Reinhard Resch.
rotor dynamics - resonance. Contributed by Reinhard Resch.