Thanks to the symbolic generation of equation of motion, Robotran is also a very flexible and portable tool which can reveal very beneficial for industrial applications. It is for instance to built hand-key model in simulink that can then be integrated in a larger model.

Full Car Vehicle Identification

Multibody dynamics is more and more involved in industrial developments for which dynamic performances are non negligible or even part of the product specification (ex. maximum critical speed of railway vehicle, automotive suspension damping performances, machine tool precision, …). More than the use of a computer program to model and solve the problem, a crucial phase relates to the problem specification itself: understanding of the system, (re-)formulation with the industrial partner of the problem at hand, formulation of valid and realistic hypotheses for the subsequent model, selection of results and pertinence of the latter with respect to the original problem.
Curiously, this phase is often a difficult step for the industrial partner himself and an expertise in the field of multibody modeling is desirable to propose an “optimal” methodology to answer the problem, starting by the above-mentioned steps. Then, the choice of the adequate modeling approach (software, language, etc.) can be done: depending on the previous analysis, a simple model can be sufficient (i.e. in Matlab) or we can decide to resort to a multibody software (Robotran, Simpack, …) or to a multi-physic environment (Modelica, Amesim, …).
For multibody-type systems, Robotran can be easily used for all these situations, i.e. from a simple Matlab model … to a complex multiphysics application. In case of very large system, including for instance tridimensionnal flexible parts, the use of commercial package will be preferred, especially if the industrial partner is using it (or simply bought it previously!).

An illustrative application is shown here: the modeling of a modern car equipped with a new concept of hydraulic suspension. The simulation illustrates the soft wrap behavior of the car on a 4 poster test rig, expected by using this new system. Have a look on some interesting animation illustrating respectively the soft wrap and the stiff roll motions.

Articulated Tramway Bogie with Independent Wheels

An articulated bogie

The goal of this research project was to model and analyse the dynamic behaviour of a complex bogie (the “BAS2000” bogie) which consists of an articulated chassis equipped with four independent wheels. This bogie is presently (2005) in use in Brussels and equips the full-length low floor “TRAM2000” urban tramway.


Hydraulic Anti-roll Suspension System

An Audi A6 on posters

The goal of this research project is to analyse the performances of a modern vehicle equipped with a new suspension system linking front, rear, right and left cylinders via a semi-active hydraulic circuit, developed by Tenneco Automotive.



©2017 Robotran