Motion Simulation

Understanding the engineering performance is challenging for intricate mechanical systems, like in wing flaps or landing gear, 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 postprocessing capabilities allow you to study of a broad range of mechanism behaviors.

Rigid Bodies


Basic multibody dynamics begins with rigid body motion, which is the fastest way to develop a critical understanding of your product’s motion characteristics. Simcenter gives you the right tools to 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 your assembly constraints, or you can create your own model by scratch. You can also easily model and simulate contact between your rigid bodies.

Flexible Bodies


Typical motion simulation represents mechanisms using rigid bodies. While this approach is acceptable for general design, in many cases, rigid bodies do not accurately represent all the parts and assemblies involved. However, by including the motion of flexible bodies, you can analyze elastic deformation and rigid body motion together. This facilitates a more accurate understanding of part and mechanism performance.

Interference Checking


When designing new assemblies, you need to consider the package space the assembly operates in and whether components will interfere with surrounding geometry. Simcenter can help you solve these this problem by providing a true multibody dynamic solver that can compute the displacement and position of assembly components connected to springs, bushings, and flexible bodies. By using your geometry directly, you can determine whether you need to make design changes to avoid interference issues.

Co-simulation with Control Systems


Today’s products often have various controllers that include electronics, hydraulics and software components. The behavior of the control system impacts the hardware mechanical system, and vice-versa, and so it’s critical for mechanical and controls engineers to understand these effects as they develop their systems. You can increase engineering productivity by simulating and optimizing both the mechanical and control systems concurrently. 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.