Simpack is a high-fidelity multibody system (MBS) simulation software used to model and analyze complex mechanical systems under real operating conditions. From suspension dynamics and drivetrain vibration to wind turbine response and HIL applications, Simpack enables engineers to gain deep insight into system behavior early in the design process.
What sets Simpack apart is its robust and high-speed solver, built on advanced mathematical formulations for real-time accuracy, non-linear behavior handling, and flexible body dynamics. It is ideal for companies requiring both precision and scalability—from individual experts to large, distributed teams.
Key Advantages
- Fast, stable solvers for non-linear multibody dynamics
- Real-time capable without code generation (HIL, SIL, MIL)
- Seamless integration with FEA, CAD, control systems, and in-house tools
- Built-in parametric component libraries and industry-specific templates
- Supports flexible bodies, high-speed dynamics, and fatigue/stress evaluation
- Scalable from detailed offline simulations to full-scale real-time applications
Automotive
Simpack Automotive is used by many of the biggest automotive OEMs for all of their multibody simulation processes, especially in the field of suspension and chassis engineering. Simpack aids engineers in analyzing and designing any type of on- or off-road vehicle.
Highlights:
- Unlimited modeling flexibility
- Extreme non-linear system behavior
- Analyses in the frequency and time domain
- Fully parameterized, highly detailed automotive database for all typical suspension/driveline types available
- Scalable detail and complexity
- Process automation and standardization using Simpack Wizard
Simpack simulates anything from passenger jets, helicopters and satellites to autonomous planetary vehicles and comet probes–virtually any aerospace application area.
Highlights:
- Simulation of any aeronautical design
- Open and closed loop systems
- Resonance analysis
- Stochastic and transient response
- Geometric and material modification
- Lift-off and touch down analyses
- Payload separations
- Solar panel deployment, robotics, etc.
BiomechanicsSimpack enables detailed modeling of biomechanical systems in areas such as sports medicine, orthopedics and human-machine interaction.
Highlights:
- Detailed Human Models
- Forward dynamic motion synthesizes and enables Human-in-the-Loop simulation
- Extendable by user-defined elements
- Realistic man-machine interaction
- Detailed human rider model
- Fully compatible with Biomotion TraXXol and Varibody
DrivetrainAdding to the functionality of Simpack in the automotive, wind turbine and rail sectors, Simpack Drivetrain is suited to the analysis and optimization of any mechanical power transmission system.
Highlights:
- Simulation of any design
- Extreme non-linear system behavior, for example, emergency braking
- Acoustic analyses in the frequency and time domain
- Detailed Gear Pair and bearing elements
- Complete system behavior
- Batch jobs
- Automatic analysis reports
Within the automotive, land machinery, shipping and power generator sectors, Simpack Engine enables engineers to design, optimize and fully understand the coupled dynamics of complete combustion engine systems.
Highlights:
- Pre-defined and fully parameterized database models of all common engine types
- Specialized user interfaces for chain drives, hydrodynamic bearings and valve spring generation
- Application-specific modeling elements for belt, combustion pressure maps and hydraulic lash adjusters
- Scalable level of model detail and complexity
- Reuse of verified components in system context
- Complete system simulations
- Extreme non-linear system behavior
- Unlimited modeling flexibility
- Reasonable computation times due to Simpack specialized solvers and relative coordinate algorithm
- Broad interfaces to third-party software
- Detailed bearing models (journal and rolling bearing)
Simpack Realtime enables the use of complex models for a wide range of performance-critical real-time applications such as Hardware-in-the-Loop (HIL) and Software-in-the-Loop (SIL) scenarios. Typical applications include handling and comfort simulations, ECU testing and component test rigs, for example, for gearboxes and engines.
Highlights:
- Unmatched model detail for real-time applications
- Seamless process, from complex MBS offline analysis to real-time applications
- Common databases and models for detailed MBS analyses and HIL/SIL applications
- Flexible bodies from FEM codes or Simpack
- Considerable acceleration of simulation time
- Easy model modification with the Simpack model editor
RailSimpack helps to analyze and design any type of rail-based vehicle or mechanism – from roller coasters, material handling systems or tramcars to complete articulated high-speed trains. Manufacturers and operators worldwide use Simpack as the leading MBS software for railway system dynamics.
Highlights:
- Unlimited flexibility
- Easy assembly of multi-car trains from submodels
- Powerful track editor
- Each wheel is treated independently.
- Scalable detail and complexity
- Batch jobs Automatic analysis reports
- Curving, rail-to-wheel forces
- Switches and crossing design
- Driveline and braking
Built on technology that has proved its worth in many application areas, Simpack Wind offers users unparalleled insight into the dynamics of any complete wind turbine system.
Highlights:
- Load calculations
- Extreme non-linear system behavior, for example emergency
braking, voltage dip, wind gust - Interfaces to aerodynamic codes, for example from NREL and ECN
- Scalable detail and complexity
- Available wind turbine models with highly detailed drivetrains
- Flexible rotor blade generator
- Automatic analysis reports
- Batch jobs
Simpack is uniquely suited to the analysis and design of any type of mechanical or mechatronic system. In addition to its primary application areas, Simpack can be applied to practically any engineering field.
Highlights:
- Simulation of any mechanical/mechatronic system
- Non-linear bending
- Stress and durability analyses
- Integration of in-house software into Simpack
- Time domain frequency analysis up into the acoustic range
- Transient harsh shock contact
Is Simpack Right for You?
If your product involves dynamic systems, rotating components, vibration-sensitive mechanisms, or human-machine interaction, Simpack enables you to:
- Predict real-world behavior before prototypes
- Optimize for both performance and comfort
- Integrate seamlessly with your simulation ecosystem
- Deploy the same models in offline, HIL, and production environments
