• parent directory

Some images from MBDyn analysis

• WRATS stiff-inplane: original movies of the '90s... (ADAMS/View)
  • flutter.avi
  • flutterm.avi
  • flutter.mpeg
  • flutterp.avi
  • flutterz.avi
• WRATS stiff-inplane: recent movies, 2007 (EasyAnim)
  • rotor wind-up
  • rotor with excitation (stable)
• Courtesy of Marco Morandini (OpenDX)
  • GearWalk.mpg
• PA-10 Courtesy of Alessandro Fumagalli (EasyAnim)
  • pa-10-a.mpg
  • pa-10-b.mpg
  • pa-10-c.mpg
• More on PA-10:
  • Corner smoothing using Lamé curve
  • Obstacle avoidance during corner smoothing using Lamé curve
• Courtesy of Michele Attolico (EasyAnim)
  • robot-opt.mpg
• Courtesy of Marco Fossati (EasyAnim)
  • rotor-pitch.0.mpg
  • rotor-pitch-rel.0.mpg
  • rotor-pitch-rel.1.mpg
• Courtesy of Marco Mantegazza and Luca Veroni (EasyAnim)
  • fiera10dg.1.mpg
  • fiera10dg.2.mpg
  • fiera10dg.3.mpg
  • fiera10dg.4.mpg
  • fieraPlane.1.mpg
  • fieraPlane.2.mpg
  • fieraPlane.3.mpg
  • fieraPlane.4.mpg
• Courtesy of Nicola Turini (EasyAnim)
  • pilot_0.0gain_heli.mpg Bo105 in hover, collective perturbation (baseline)
  • pilot_0.0gain_rel3.mpg Bo105 in hover (relative frame), collective perturbation (baseline)
  • pilot_1.2gain_rel3.mpg Bo105 in hover (relative frame), collective perturbation (pilot in the loop, gain=1.2)
  • pilot_2.0gain_rel3.mpg Bo105 in hover (relative frame), collective perturbation (pilot in the loop, gain=2.0)
• Courtesy of Alessandro Fumagalli (EasyAnim)
  • stest.mpg wave-based control of a lumped multibody flexible system
  • Ramp1Sec.mpg wave-based control of a multibody flexible system
• Control constraint example, 2010 (EasyAnim)
  • triangle2.gif the trajectory of the center point is controlled by the torque applied to the outer hinges. Inspired by an example in P. Betsch, S. Uhlar, N. Saeger, R. Siebert, and M. Franke, "Benefits of a rotationless rigid body formulation to computational flexible multibody dynamics" 1st ESA Workshop on Multibody Dynamics for Space Applications 2nd and 3rd February 2010, ESTEC, NL
• Rotorcraft-Pilot Coupling, 2010 (EasyAnim)
  • flutter_abs.gif Rotor collective bounce (absolute frame).
  • flutter_rel.gif Rotor collective bounce (relative frame).
  Part of research about RPC sponsored by MIUR under PRIN 2007-8TJFZE. See
  • P. Masarati, G. Quaranta, M. Gennaretti, and J. Serafini, "Aeroservoelastic Analysis of Rotorcraft-Pilot Coupling: a Parametric Study", 66th AHS Forum, May 11-13, 2010, Phoenix, AZ.
  • P. Masarati, G. Quaranta, M. Gennaretti, and J. Serafini, "Aeroservoelastic Analysis of Rotorcraft-Pilot Interaction by Coupled BEM-Multibody Solvers", 36th ERF, Paris, France, September 7-9, 2010.
  Part of research about RPC sponsored by European Commission under 7FP project ARISTOTEL.
  • Multibody model of helicopter and pilot's left arm undergoing PAO here
• Within the project MAST/CTA, 2010 (EasyAnim)
  • 7segments.mpg a 7-segment snake-like robot moving in vacuum
  • Slit annular plate subjected to lifting line force (6x30, 10x80)
  • Pullout of an open-ended cylindrical shell (16x24, 24x36)
  • Pullout of an open-ended cylindrical shell, imposed displacement (16x24, 24x36)
  • Pinched cylindrical shell mounted over rigid diaphragms, imposed displacement (40x40, 48x48)
  • Cantilever plate subjected to end moment (12x6)
  • HemiShellData.gif hemi-shell test.
  • fwflexible4x4_40deg10Hz.gif a flexible wing model inspired by Figure 11(b) of R. Malhan, M. Benedict, I. Chopra, "Experimental Investigation of a Flapping Wing Concept in Hover and Forward Flight for Micro Air Vehicle Applications", 66th AHS Annual Forum, Phoenix, Arizona, May 11-13 2010.
  • dashsmall.avi a crawler moving on granular medium (co-simulation of MBDyn and MD, courtesy of Dan Goldman and Tingnan Zhang)
  • compliant_legged_robot_2.gif a (sixth of a) compliant legged robot falling on a rigid flat plane (nonsmooth-node module implemented by Matteo Fancello)
• Theo Jansen's mechanism, 2010 (EasyAnim) "... sitting on the dock of the bay, wasting time..."
  • TheoJansenMech.gif: a static model was used to "pull" arbitrarily placed nodes at the exact distances specified here using distance joints; then the real model was built and simulated.
  • TheoJansenMech4.gif: a four-modules variant, obtained by replicating the previous module.
  • TheoJansen_perfilm_close.gif: a four-modules variant, obtained by replicating the previous module.
• Examples using module-loadinc, 2010 (EasyAnim)
  • beam_loadinc.gif: a curved beam, pinned at the ends, is statically loaded beyond multiple snap-throughs related to various buckling loads.
  • fixedsliding.gif: a straight beam, subjected to gravity, with one end clamped whereas the other can slide along a fixed axis, is statically twisted beyond multiple snap-throughs related to various buckling loads.
• Benchmarks:
  • lateralbuckling.gif: dynamic analysis.
  • lateralbuckling_static.gif: static analysis.
  • rotatingshaft.gif: unbalanced rotating shaft going through the critical velocity.
  • multibarmech.gif: multi-loop mechanism.