ATTENTION: UTILITIES, PUMP & LARGE FAN MANUFACTURERS:
Our software is especially applicable to your operations!
DyRoBeS™ is a powerful and sophisticated software tool authored by Wen Jeng Chen, Ph.D., for rotor dynamics including comprehensive bearing analysis. The procedure is based on Finite Element Analysis (FEA), which allows for multi-shaft designs and modeling of bearing housings. The FEA technique also provides more accurate predictions of natural frequencies than traditional transfer matrix methods. There are three rotor dynamics modules which analyze lateral, torsional, and axial vibrations of multi-shaft and multi-branch systems.
DyRoBeS™ provides the engineer with the tool to analyze a rotor bearing system without the expense of extensive trials. The engineer can modify the design and investigate the sensitivity of the dynamics of the rotor to geometry, unbalance, seal wear, bearing changes, and low frequency excitation.
The program contains extensive modeling, analysis, and pre/post processing capabilities. This Windows-based software is very user friendly and easy to use. The operation is entirely consistent with the industry standard for the Windows environment.
Lateral Vibration
The lateral vibration of the discretized system is described by two translational and two rotational coordinates at each finite element station. The motion of a flexible support is described by two translational displacements. The analysis for lateral vibration contains:
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Multi-shaft, multi-material |
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Static deflection and bearing constraint reactions |
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Critical speed analysis of multilevel rotors |
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Whirl speed and stability analysis with 3-D animation |
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Steady state unbalance response analysis - linear and nonlinear |
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| Rotor unbalance | |||
| Skewed disks | |||
| Bowed rotors | |||
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Systems with linear bearings | ||
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Systems with non-linear squeeze film dampers and floating bush bearings |
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Magnetic bearings | ||
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Nonlinear Time transient analysis for variable speed blade loss rubs on nonlinear, rolling element, fluid film, or magnetic bearing effects |
Torsional and Axial Vibration
For torsional and axial vibrations, the motion of each finite element station is described by a rotational displacement for torsional vibration and a translational displacement for axial vibration. The systems can be continuous or discrete. The analyses for the torsional and axial vibrations are:
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Undamped natural frequency calculation of multi-level geared rotors |
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Steady state forced response analysis |
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Time transient startup with synchronous or inductive motion |
Rotor Balancing
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Multi-plane, multi-speed balancing calculations | ||
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Trim balancing | ||
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Balancing predictions based on previous influence coefficients | ||
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Balance plane graphics showing balance and trim weight placement |
Bearing Capabilities
Bearing stiffness and damping coefficients are computed over a specified speed range for speed variables and constant loadings. Thermal effects may be included. Temperature rise and oil flow are computed.
The following predefined bearing types are provided in the program:
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Plain journal bearings |
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Multi-lobe journal bearings |
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Tilting pad bearings |
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Pressure dam bearings | ||
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Ball and roller element bearings |
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Squeeze film damper |
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Rolling elements with clearance |
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User defined bearings |
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Lubricant properties |
Recommended System
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Windows 95, 98, NT, 2000, XP, or VISTA |
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Pentium III Processor |
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At least 128 Megabytes of RAM |
Priority Support
RODYN offers complete support services that include training and telephone support. Priority support provides the users with 24-hour response time and product upgrades.
Upgrades
Please call for special upgrade pricing if you are a user of a DOS or older Windows version of DyRoBeS™.