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Rotor dynamics analysis: SAMCEF Rotors is up to the challenge


Predicting rotor dynamics phenomena is not a straightforward job. To address the challenges associated with rotor dynamics simulation we developed SAMCEF Rotors: a solution specifically dedicated to the dynamic analysis of fast rotating machines, like turbo machines, propellers, fans, etc.. Based on Finite Element Theory, SAMCEF Rotors enables the computation of critical speeds as well as responses to excitations, in the frequency and time domains of fast rotating systems that can also include non- moving parts (stators, casing...) as well as different linking devices such as bearings, gears... The software provides engineers fast and accurate insight into rotor dynamics.


Rotor Dynamics 0"Design better and faster" is the concept driving most new developments and ideas in today's high speed rotating machines sector. Enhancing products and processes is a challenge faced every day in this industry.

SAMCEF Rotors has been developed to address the complex challenge of rotor dynamics analysis. We provide a professional solution specifically dedicated to rotor dynamics specialists and, more generally, to engineers focusing on global dynamics of rotating machines. SAMCEF Rotors is a top of the range package, both in terms of results accuracy and user friendliness. The long list of international companies all over the world using SAMCEF Rotors on a daily basis is a testimony to this.

Accurately simulating the behavior of high speed rotating machines is among the most complex numerical simulations. SAMCEF Rotors harnesses 30 years of experience in this field. SAMCEF Rotors is the right tool for your rotor dynamics analysis job.

Model your rotor according to your needs

From predesign to verification, you choose the type of model you want to build according to your goals:

    • simple models made of beams and lumped masses are well suited to assess the global dynamic behavior of the rotor with short computation time
    • 3D models can be built very easily and produce accurate results since they naturally include all details of the rotor

      Beside these classical approaches, SAMCEF Rotors features several unique modeling techniques:

        • 2D Fourier multi-harmonics’. For axisymmetric structures, full 3D results can be obtained by running analyses on 2D models for various values of the azimuth angle. The 2D multi-harmonics technique combines the ease of building models and results accuracy with reduced computation times
        • Another unique way to build an accurate model of a rotor is by taking advantage of the cyclic symmetry of rotors to model only one angular sector of it. Obtained results can then be extrapolated to the whole structure. This technique can even be used for rotors featuring several stages with different angular sizes. Special elements are available to take the junction between the stages into account

          These different modeling techniques include the requested features to build rotor dynamics models: an extended library of bearings (dry rollers and balls, hydrostatic, hydrodynamic), squeeze film dampers, gears, ... The same model can be used to run stability analyses, response to harmonic forces or transient analyses. SAMCEF Rotors is delivered with SAMCEF Field, a state of the art Graphical User Interface, including all classical Finite Element Analysis features as well as a driver dedicated to Rotor Dynamics analyses. SAMCEF Field makes rotor model building so easy that you will be able to fully focus on your engineering work. SAMCEF Rotors is the perfect solution to better understand rotor dynamics, the behavior of a rotating machine and control the vibration level during its use.


          • large library of Finite Elements available
          • several models for bearings and seals
          • gear elements and macros to build complete reductor stages
          • free orientation of rotation axis in space
          • several rotors with different rotation speeds can be modeled
          • non rotating parts (stators and casings) can be taken into account
          • critical speed computation, energies distribution mode shapes and display
          • response to a harmonic force (linear or non - linear)
          • transient analysis
          • dedicated post processing tools including several types of diagrams


            • rotor models are easily built in a user friendly environment
            • better understanding of the dynamic behavior of a rotating machine
            • reduce the vibration level and avoid harmful resonances through prediction
            • build the best model to the required specifications as a result of  a large library of elements (1D, 3D, 2D Fourier multi-harmonics, cyclic symmetry...)
            • reduce costs thanks to a faster design cycle
            • dedicated post processing tools according to industrial standards
            • reduce the design cycle due to reduced need for physical testing
            • take advantage of 45 years of expertise in FEA and 30 years in Rotor Dynamics analysis
            • reduce the maintenance and warranty costs thanks to increased reliability
            • one simple but powerful user oriented software to develop expertise and take advantage of industrial know-how at simulation level
            • uising SAMCEF Rotors in combination with unique LMS testing capabilities will provide first class simulation and testing technologies

              Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges. Go to the customer stories section

              Rotor dynamics images

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