MBDyn 1.7.3

MBDyn features the integrated multidisciplinary simulation of multibody, multiphysics systems, including nonlinear mechanics of rigid and flexible bodies (geometrically exact & composite-ready beam and shell finite elements, component mode synthesis elements, lumped elements) subjected to kinematic constraints, along with smart materials, electric networks, active control, hydraulic networks, and essential fixed-wing and rotorcraft aerodynamics. MBDyn is the first and one of the few full-featured free general purpose Multibody Dynamics analysis software, released under GNU’s GPL. It has been developed at the Dipartimento di Scienze e Tecnologie Aerospaziali (formerly Dipartimento di Ingegneria Aerospaziale) of the University “Politecnico di Milano”, Italy.

Tags fem fea finite-element-analysis elm cpp
License GNU GPLv3
State stable

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Recent Releases

1.7.311 Jul 2025 20:20 minor bugfix: Enhancements: Added network byte order to drivers element output streams. Added width/format for eigenanalysis output files. Added relative output of follower force/couple. Refactored communication code (stream drivers and output. Elements) to support user-defined communicators (Luca Conti For GSoC 2017) Added module-flightgear (Luca Conti for GSoC 2017). Added automatic derivatives coefficient estimation. (Reinhard Resch) Backward compatibility : Got rid of adams and motionview output support. Deprecated "drees 2" rotor inflow model (identical to. "dreese") Known : : - (harmless?) off-by-one read in step drive. - in timestep control (Reinhard Resch). Default max time step (Reinard Resch). Build without libmbc. Test if residual is NaN (Reinard Resch). Error message in strext (Richard Crozier). Typos and strengthened rotor inflow models.