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SIMCENTER

Motion simulation

Simulate multibody dynamics to engineer performance for moving mechanisms.

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Study mechanism behaviour

Understanding engineering performance is challenging for intricate mechanical systems, like wing flaps or landing gears, sliding sunroofs or suspensions, or photocopiers and other mechanisms. Motion simulation uses multibody dynamics to calculate the reaction forces, torques, velocities, acceleration and more for mechanical systems.

 

You can directly convert CAD geometry and assembly constraints into an accurate motion model, or create your own multibody model from scratch. The embedded motion solver and robust post-processing capabilities enable you to study a broad range of mechanism behaviours.

Motion simulation capabilities

Rigid Body Dynamics

Perform detailed rigid body dynamics analyses. It’s easy to create your motion model directly from your CAD assembly through an automated conversion process based on assembly constraints, or you can create your model from scratch. You can also quickly model and simulate contact between rigid bodies.

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Flexible Body Dynamics

By including the motion of flexible bodies, you can analyse elastic deformation and rigid body motion together. This facilitates a more accurate understanding of part and mechanism performance.​

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Control System Integration

Simcenter gives you the ability to co-simulate mechanical designs coupled with control systems to verify whether the control system design is robust enough to control the dynamic mechanism and help eliminate costly changes later in development.

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Time waveform Application

Time waveform replication (TWR) uses multibody dynamics capabilities to allow you to build a virtual test rig, calculate the frequency response of a given system, specify target signals, filter and condition the signals and, ultimately, produce conditioned drive signals using an iterative solution process.

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Drivetrain, transmission & gears

Simcenter helps you create and simulate detailed drivetrain models. Simcenter brings in-depth, gearbox-specific ease of use into the multibody simulation process, so you can rapidly move from initial design specifications to accurate simulations. The discrete drivetrain capability also provides a convenient interface to simplify the modeling of complex chain, track and belt systems.

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Interference Checking

Simcenter provides a true multibody dynamic solver that can compute the displacement and position of assembly components connected to springs, bushings and flexible bodies. Using your geometry directly lets you determine whether you need to make design changes to avoid interference issues.

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Hardware-in-the-loop

Unlock new external model integration possibilities by adding a model to a real-time (RT) platform, such as a vehicle simulator. This helps you more accurately reflect the actual physics of a vehicle. Integrate with other multiphysics models and combine with RT simulators and hardware-in-loop (HiL). Re-use existing models or extend the accuracy of RT models by adding more degrees-of-freedom (DOF).

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Tyre Model Integration
Tires play an integral part in the performance of vehicle dynamics simulation, and Simcenter allows you integrate tire models into multibody dynamics models.

CASE STUDY

Daimler-Benz AG

Daimler-Benz AG uses the reliability and accuracy of Simcenter 3D for motion simulation solver and its visual basic automation capabilities as the cornerstone of the ride simulation process.

Simulation of next-generation driving dynamics using Simcenter 3D for motion simulation

Company: Daimler-Benz AG

Industry: Automotive & transportation

Location: Sindelfingen, Germany

Real-time multi-body simulation and its relationship to “the best cars in the world”

"Our whole development process is focused on achieving that one goal: the best cars in the world.

Prof. Dr. Ludger Dragon, Senior Manager, Ride Comfort Division"
- Mercedes Technology Center

Challenges

  • Develop a multitude of car variants based on the same platform where each variant has its own ride and handling characteristics

  • Predict driving behaviour as realistically as possible in an early vehicle development phase

  • Build every car to standards such that it will be adjustable to all global markets

 

Keys to Success

  • Use model-based development as one of the keys for the realization of platform concept

  • Utilize reliability and accuracy of Simcenter 3D for motion simulation solver and its Visual Basic automation capabilities as the cornerstone of the ride simulation process

Learn more 

Contact us to get started with Simcenter Motion

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