[MBDyn-users] MBDyn 1.5.4 is out

Pierangelo Masarati masarati at aero.polimi.it
Fri Dec 28 00:09:43 CET 2012

Dear users,

MBDyn 1.5.4 is out.  The tarball is available at


Main improvements are a new nonlinear solver based on a line search
algorithm, contributed by Reinhard Resch, and a run-time loadable module
that implements contacts with friction formulated as a linear
complementarity problem using SICONOS, developed by Matteo Fancello.

The complete changelog is:

MBDyn 1.5.4
        - added '-N' command-line switch to set threads number
        - added module-nonsmooth-node: non-smooth dynamics support
          using SICONOS <http://siconos.gforge.inria.fr/>
          (Matteo Fancello)
        - added 3D variant of continuous contact constitutive law
          (Matteo Fancello)
        - added line search nonlinear solver (Reinhard Resch)
        - added condition number output (Reinhard Resch)
        - added scalar support genel private data (Reinhard Resch)
    Backward compatibility issues:
    Known issues:
        - Schur solver is broken
        - TotalPinJoint inverse dynamics support is broken
        - RTAI and multithread support incompatible
        - module-octave and multithread support incompatible
    Bug fixes:
        - simplify escaping of delimiter in input
        - fix deformable hinge early Jacobian assembly
          (noted by Filippo Tunesi)
        - fix conjugate transpose of `X' in pod.m
        - fix modal element when origin redefined
          (noted by Sebastiano Fichera)
        - fix block 11 one row too much in output of femgen
          (noted by Sebastiano Fichera)
        - fix arpack memory issue (noted by Reinhard Resch)
        - fixed NaivePermMatrixHandler resize
          (noted by Reinhard Resch)
        - fix array drive caller derivative bug

Enjoy!  p.

Pierangelo Masarati
Associate Professor
Dipartimento di Ingegneria Aerospaziale
Politecnico di Milano

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