RoLaSIM | Professional Rotordynamic & Gas Bearing Simulation Software | SADAP

RoLaSIM: Professional Rotordynamic and Bearing Simulation for Turbomachinery

Scientifically validated software for rotordynamic analysis and aerodynamic bearing optimization in practical applications.

RoLaSIM Software — Rotordynamic Analysis and Aerodynamic Bearing Development for Turbomachinery

Core Rotordynamics Module

Comprehensive analysis of critical speeds, stability thresholds, and 3D mode shapes for reliable system design.

Aerodynamic Foil Bearings

Precise simulation of multi-layer foil structures for journal and thrust bearings with optimal damping characteristics.

Spiral Groove Bearing Modules

Optimization of herringbone and spiral groove geometries for maximum load capacity and minimal friction.

3D Visualization

Interactive display of mode shapes, pressure profiles, and vibration behavior for in-depth system insights.

Developed for Demanding Turbomachinery Applications

Advanced specialized software for gas-bearing turbines, compressors, medical spindles, and high-speed drives.

Modular Software for Rotordynamics and Aerodynamic Bearings — Scientifically Validated Precision Technology

RoLaSIM combines specialized modules for the holistic analysis and optimization of rotordynamic systems and aerodynamic bearings. The central rotordynamics module precisely calculates critical speeds, stability behavior, and unbalance responses. It is complemented by four dedicated bearing modules for the advanced design of foil bearings (journal and thrust) as well as spiral groove bearings (radial and axial) — optimally tailored to your specific operating conditions.

The scientifically validated software was developed by informatics and domain experts based on a modular, multilingual software architecture with a powerful user interface, flexible frontend, and robust backend. Thanks to the integrated bearing-rotor coupling, fully gas-bearing systems can be simulated and optimized with unprecedented precision. Whether in turbines, medical devices, precision manufacturing, or other demanding applications — RoLaSIM delivers crucial insights for innovative and reliable designs.

Five Specialized Modules

3D-Animation der Rotordynamikanalyse

Interactive 3D Visualization of Rotor-Bearing Systems

Rotordynamics Core Module

Core Component for System Analysis

Breaking Computational Barriers: The Next Evolution in Rotordynamic Analysis — the industry's most advanced computational platform that transforms complex vibrational challenges into clear, actionable insights with unparalleled numerical stability. Our revolutionary module employs proprietary multi-method eigenvalue solutions with adaptive matrix conditioning algorithms that ensure convergence for systems with extreme stiffness ratios. Enhanced mode detection algorithms intelligently classify vibration patterns, distinguishing between rigid body and elastic modes with precision that surpasses conventional approaches. Gain unprecedented insight through comprehensive bearing influence analysis, sophisticated energy distribution visualization, and ISO 1940-compliant unbalance response—all integrated with interactive 3D visualizations and automated report generation for complete end-to-end rotordynamic solutions.

Core Module

Rotordynamik-Basismodul: Detaillierte Funktionen Kernmodul

Unbalance Response Simulation

ISO-Compliant Unbalance Response

Predict real-world vibration behavior with precision through our advanced unbalance response simulations, fully compliant with ISO 1940 standards for balance quality requirements.

  • Automated balance grade selection based on machine type and operating conditions
  • Multi-plane unbalance distribution with phase angle optimization
  • Node-specific amplitude prediction at critical measurement locations
  • Comprehensive bearing force calculations for reliable support design
  • Automatic correction weight placement suggestions for practical balancing procedures
  • Speed-dependent scaling with adaptive matrix conditioning for optimal numerical stability
Bearing Influence Analysis

Advanced Bearing Influence Analysis

Gain unprecedented insight into bearing-rotor interaction with our revolutionary bearing influence analysis—optimizing bearing placement and properties for maximum stability and vibration control.

  • Quantitative mode-specific influence mapping that reveals each bearing's impact on critical vibration modes
  • Detailed spatial distribution analysis of bearing effectiveness for optimal placement decisions
  • Intelligent pivot point detection for conical modes with precise node correlation metrics
  • Comprehensive stiffness and damping coefficient evaluation across operating speed ranges
  • Automatic identification of bearing nodes with limited influence for targeted design improvement
  • Multi-parameter bearing optimization with speed-dependent stiffness recommendations
3D Mode Visualization

Interactive 3D Mode Visualization

Transform complex rotordynamic data into intuitive visual insights with our interactive 3D mode shape visualization system - making advanced analysis accessible to your entire engineering team.

  • Real-time animated 3D mode shapes with whirl orbit visualization
  • Customizable view angles and sectional analysis for detailed inspection
  • Direct comparison functionality between different operating speeds
  • High-resolution export capabilities for reports and presentations
  • Intuitive color-mapping of displacement, stress, and energy distribution
Mode Detection and Classification Analysis

Intelligent Mode Classification Technology

Eliminate the guesswork in vibration mode identification with our sophisticated mode detection system that uses advanced strain energy and correlation metrics to precisely classify and visualize complex vibrational behavior.

  • Precise energy distribution analysis that accurately differentiates rigid body from elastic modes
  • Advanced conical/cylindrical mode differentiation with automated pivot point identification
  • Detailed zero-crossing analysis that determines exact bending order with mathematical precision
  • Sophisticated whirl direction detection using Principal Component Analysis for complex orbits
  • Comprehensive strain energy visualization with intuitive color-mapped representations
  • Mode-specific damping estimation with intelligent physical constraints for realistic predictions
Critical Speed Analysis

Comprehensive Critical Speed Analysis

Eliminate unexpected resonance issues with our multi-method critical speed identification system, ensuring no dangerous operating points are missed in your analysis.

  • Dual-methodology approach using both frequency response and Campbell diagram intersections
  • Proprietary mode tracking algorithm to follow natural frequencies across variable speeds
  • Intelligent filtering of non-critical modes to focus on relevant vibration concerns
  • Automatic categorization of forward and backward whirls with participation factors
  • Speed-dependent critical amplification factors for accurate severity assessment
  • Advanced bearing influence evaluation identifying optimal damping configurations
Matrix Contribution Analysis

Comprehensive Matrix Contribution Analysis

Unlock deep physical insights into your rotating system's behavior with our unique matrix contribution analysis—revealing the precise influence of mass, stiffness, damping, and gyroscopic effects across the operating speed range.

  • Logarithmic visualization of matrix norm evolution across the entire speed spectrum
  • Quantitative comparison of shaft stiffness versus bearing stiffness contributions
  • Precise evaluation of gyroscopic effect amplification with increasing rotational speed
  • Bearing damping influence assessment for critical stability boundary determination
  • Interactive dominance analysis showing which physical effects control system response at each speed
  • Targeted design guidance based on matrix contribution insights for system optimization
Enhanced Stability Analysis

Advanced Multi-Method Stability Analysis

Our breakthrough stability calculation engine employs three complementary mathematical approaches that work together to deliver unmatched accuracy in rotordynamic prediction, even for the most complex machinery.

  • Triple-method eigenvalue solution (State-Space, Direct, and QEP) with intelligent result selection
  • True speed-dependent damping that accurately captures bearing influence across all operating ranges
  • Comprehensive matrix contribution analysis that quantifies every component's impact on system behavior
  • Enhanced modal tracking with sophisticated frequency and damping visualization
  • Bearing-specific stability influence analysis with automatic coefficient validation and correction
  • Robust numerical stability even for ill-conditioned systems with extreme stiffness ratios
Numerical Stability Enhancements

Revolutionary Numerical Stability Technology

Solve previously impossible rotordynamic problems with our breakthrough adaptive matrix conditioning algorithms—delivering reliable results for systems with extreme stiffness ratios where conventional methods fail completely.

  • Proprietary multi-stage matrix regularization that preserves physical accuracy while ensuring convergence
  • Intelligent adaptive timestep control for handling extremely stiff differential equations
  • Smooth damping limiters with physical constraints that prevent unrealistic vibration predictions
  • Triple-method eigenvalue solution with automatic fallback mechanisms for guaranteed convergence
  • Enhanced frequency filtering with continuity enforcement to eliminate numerical artifacts
  • Advanced mode tracking using Modal Assurance Criterion with frequency-based penalty functions
STL-Based Rotor Modeling

Advanced STL Import & Automatic Modeling

Transform your CAD models directly into precise rotordynamic simulations with our groundbreaking STL import feature. Skip tedious manual modeling and accelerate your design process.

  • Automatic extraction of shaft and disk geometry from standard STL files
  • Intelligent hollow shaft detection for accurate mass distribution
  • Optimized segmentation for ideal element distribution and accuracy
  • Direct integration with your existing CAD workflow
  • Composite material support with multi-layer analysis capability
  • Significant time savings compared to manual modeling approaches
Automatic Report Generation

Comprehensive Automated Reporting

Transform complex analysis results into professional documentation instantly with our powerful report generation system – eliminating hours of manual documentation work.

  • One-click generation of complete engineering reports with customizable templates
  • Automatic inclusion of all critical analysis results with proper formatting and annotation
  • Interactive Campbell diagrams and mode shapes embedded directly in reports
  • Export options for various formats including PDF, HTML, and Microsoft Office
  • Comparison reporting for tracking design improvements across multiple iterations

RADIAL FOIL BEARINGS

Journal Bearings with Multi-Layer Foils

High-precision simulation and optimization of multi-layer foil structure journal bearings for dynamically demanding high-speed applications. The module captures non-linear hysteresis effects in detail and calculates speed-dependent stiffness and damping coefficients for optimal stability prediction. The comprehensive analysis of temperature influences enables precise design even under extreme operating conditions.

Foil Bearing

Radial Foil Bearings: Detailed Functions Specialized

Radial Foil Bearing Analysis

Multi-Layer Foil Structure Analysis

The Radial Foil Bearing module offers advanced simulation capabilities for complex multi-layer foil structures used in modern high-speed applications.

  • Detailed analysis of multi-layer foil structure with layer-specific material characterization
  • Precise calculation of speed-dependent dynamic coefficients (stiffness and damping)
  • Advanced modeling of non-linear hysteresis effects for realistic stability predictions
  • Comprehensive thermal analysis with temperature distribution prediction across the operating range
  • Optimization of foil geometry for maximum damping properties and operational stability
 

AXIAL FOIL BEARINGS

Thrust Bearings with Multi-Layer Foils

Specialized analysis of thrust bearings with multi-layer foil structures for maximum axial load capacity with minimal friction in high-speed applications. The unique temperature distribution calculation and advanced multi-layer foil analysis enable optimal design for start-stop conditions and wear minimization. The module provides precise predictions of axial damping characteristics for robust system designs.

Foil Bearing

Axial Foil Bearings: Detailed Functions Specialized

Axial Foil Bearing Analysis

Axial Load Optimization

The Axial Foil Bearing module offers specialized simulation capabilities for thrust bearings with multi-layer foil structures designed for maximum loads and optimal damping properties.

  • High-precision calculation of maximum axial load capacity under various operating conditions
  • Advanced multi-layer foil analysis with layer-specific material characterization
  • Detailed prediction of temperature distribution for thermal deformation analysis
  • Optimized start-up behavior simulation to minimize initial wear
  • Precise wear prediction for reliable maintenance planning and increased bearing life
 

RADIAL SPIRAL GROOVE BEARINGS

Herringbone & Spiral Groove

High-precision simulation and parametric optimization of journal bearings with spiral groove or herringbone structures for low-friction high-speed applications. The detailed groove geometry analysis and pressure distribution simulation enable optimal geometry configuration for various gas media (air, H₂, He). The integrated instability prediction minimizes development risks and ensures reliable bearing performance across the entire operating range.

Air bearing

Radial Spiral Groove Bearings: Detailed Functions Specialized

Radial Spiral Groove Bearing Analysis

Geometric Parameter Optimization

The Radial Spiral Groove Bearing module offers advanced simulation functions for precise design and optimization of spiral and herringbone structures in highly loaded journal bearings.

  • Parametric optimization of groove geometry for maximum pressure development and minimum friction
  • High-resolution analysis of groove geometry with detailed pressure profile simulation
  • Comprehensive gas media characterization for various applications (air, hydrogen, helium)
  • Advanced instability prediction and mitigation for safe high-speed operation
  • Integrated optimization algorithms for application-specific geometry adaptations
 

AXIAL SPIRAL GROOVE BEARINGS

Optimized Axial Loading

Specialized development and optimization of thrust bearings with spiral groove structure for maximum efficiency and load capacity under axial loads. The precise geometry optimization and high-resolution pressure profile analysis ensure an optimal load capacity-to-friction ratio. The detailed speed dependency analysis enables the design of robust thrust bearings for varying operating conditions with maximum axial force absorption at minimal energy dissipation.

Air Bearing

Axial Spiral Groove Bearings: Detailed Functions Specialized

Axial Spiral Groove Bearing Analysis

Maximized Axial Load Capacity

The Axial Spiral Groove Bearing module offers specialized functions for optimizing thrust bearings with spiral groove structure for maximum load capacity with minimum friction.

  • Precise geometry optimization of spiral groove structure for maximum pressure development
  • High-resolution pressure profile analysis with 3D visualization for detailed insights
  • Optimization of load capacity-to-friction ratio for energy-efficient bearing design
  • Comprehensive speed dependency analysis for variable operating conditions
  • Integrated thermal analysis with temperature distribution calculation and heat flow modeling
 
Turbomachines Concept RoLaSIM — Modular Rotordynamics Analysis & Aerodynamic Bearing Development Rotordynamics Module Comprehensive analysis of complex rotor systems Radial Foil Bearing Optimized static and dynamic properties Axial Foil Bearing Optimized static and dynamic properties Radial Spiral Groove Bearing Optimized static and dynamic properties Axial Spiral Groove Bearing Optimized static and dynamic properties Benefits • Optimized turbomachine design • Cost savings from reduced tests • Consideration of critical operating conditions • Tolerance studies for manufacturing inaccuracies • Increased component lifetime • Lower development costs • Validated models for highest reliability

Comprehensive Analysis Capabilities for Turbomachinery Design

Rotordynamic Analysis

  • Critical speeds and amplitude calculation for reliable operating range determination
  • Campbell diagrams with color-coded damping values to visualize speed-dependent natural frequencies
  • 3D visualization of bending modes and vibration modes with animation
  • Complete stability analysis with logarithmic decrement and whirl frequencies
  • Detailed calculation of gyroscopic effects and anisotropic bearing properties
  • Precise damping predictions for realistic vibration behavior
  • Comprehensive unbalance response and balance quality analysis according to ISO 1940 with automatic report generation
  • Advanced sensitivity analyses for critical design parameters and material influences

Aerodynamic Bearing Optimization

  • High-precision spiral groove bearing geometry optimization for maximum pressure development with minimum friction
  • Advanced multi-layer foil structure analysis for improved damping properties
  • High-resolution pressure distribution profiles with 3D visualization and export function
  • Speed-dependent stiffness and damping coefficients for accurate rotordynamic simulation
  • Detailed lift-off behavior and start-up analysis for start-stop cycles and wear minimization
  • Comprehensive temperature distribution and thermal deformation calculation
  • Multivariable parameter optimization for specific operational requirements and operating conditions
  • Simulation of various gas media (air, helium, hydrogen, etc.) for special applications

Integration & Tools

  • Seamless bearing-rotor integration for holistic system analysis with true bidirectional coupling
  • Extensive material database with editable properties and temperature dependencies
  • Versatile export and report functions (PDF, Excel, CSV, MATLAB) with customizable templates
  • Intuitive design wizard with intelligent geometry suggestions for quick modeling
  • Automatic parameter sweep analyses for optimal design point determination in complex systems
  • Advanced design optimization with customizable objective functions and constraints
  • Interactive visualizations of all calculation results with zoom, rotation, and export functions
  • Comprehensive comparison functions for different design variants with automatic difference analysis
 

Adaptive Solutions

At SADAP, we offer flexible solution paths for optimal design of your turbomachinery and high-speed systems. While our RoLaSIM software provides a comprehensive platform for independent simulation and design of rotors and aerodynamic bearings, you can also take advantage of our specialized development services if you want to outsource the complex design task.

Explore our Aerodynamic Bearing Development Services — let our experts develop the optimal bearing geometry for your specific applications, with years of experience, validated methodology, and comprehensive scientific expertise in the field of air and foil bearings.

 
 
 

Starten Sie jetzt mit RoLaSIM

Transformieren Sie Ihre Rotordynamik- und Lagerentwicklung mit der fortschrittlichsten Simulationssoftware auf dem Markt. Optimieren Sie Turbomaschinen, Kompressoren und Hochgeschwindigkeitssysteme mit wissenschaftlich validierter Präzisionstechnologie. Ob Automotive, Luft- und Raumfahrt oder Medizintechnik: Sichern Sie sich überlegene Produktqualität durch KI-gestützte Rotordynamikanalyse.