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Motion
Set up and run a motion analysis, plot the results, and export the results.
Motion Analyst
The Analyst profile functions as a feature-rich pre-processor, originally inspired by the needs of the automotive industry. Utilizing a hard-point design approach, it provides access to the full suite of MotionSolve features and capabilities. The Analyst profile offers unparalleled flexibility in system modeling and can be highly tailored to specific industry requirements. However, this versatility comes with increased complexity, requiring a higher level of MBD expertise and a specialized mindset for effective use.
Motion Forces
Apply motors, actuators, springs, and gravity to define the elements for a motion analysis.
Motions
Use the Motions tool to define predetermined displacements, velocities, and accelerations in joints or between markers.
Motion Properties

Welcome
What's New
Discover new features and enhancements.
Get Started
New to Inspire? Learn the basics here.
Tutorials
Start using Inspire with our interactive tutorials.
Variables
Create and assign variables to parametrize a model. This allows you to quickly iterate and compare design concepts by tweaking the values of the variables.
Parametric Modeling
Create parametric sketches, geometry, and PolyNURBS with construction history and variables.
Implicit Modeling
Create implicit models with primitives, lattices, point clouds, fields, offsetting, Booleans, inverting, smoothing, morphing, and filleting.
Structures
Set up your model and run a structural analysis or optimization.
Motion
Set up and run a motion analysis, plot the results, and export the results.
- Motion Designer
  The Designer profile adopts a user-centric approach, prioritizing accessibility and ease of use over complexity. While its feature set is less extensive than that of the Analyst profile, it compensates by streamlining functionality and abstracting complexities through intuitive user interactions. This simplicity empowers users outside the traditional Multibody Dynamics (MBD) community to achieve their objectives efficiently, requiring minimal familiarity with MBD.
- Motion Analyst
  The Analyst profile functions as a feature-rich pre-processor, originally inspired by the needs of the automotive industry. Utilizing a hard-point design approach, it provides access to the full suite of MotionSolve features and capabilities. The Analyst profile offers unparalleled flexibility in system modeling and can be highly tailored to specific industry requirements. However, this versatility comes with increased complexity, requiring a higher level of MBD expertise and a specialized mindset for effective use.
  - Creating Motion Entities
  - Motion Connections
    Define motion connections by grounding parts and creating rigid groups and joints.
  - Motion Forces
    Apply motors, actuators, springs, and gravity to define the elements for a motion analysis.
    - Motions
      Use the Motions tool to define predetermined displacements, velocities, and accelerations in joints or between markers.
      - Add Motions
      - Edit Motions
        Edit a motion entity using the Motions tool or Property Editor.
      - Motion Properties
    - Forces
      Use the Forces tool to apply force or torque between parts.
    - Gravity
      Use the Gravity tool to apply gravitational acceleration (G) and adjust its direction.
    - Spring Dampers
      Use the Springs tool to create and edit SpringDampers.
    - Bushings
    - Fields
      Use the Fields tool to create a compliant connection between two bodies where stiffness or damping in one direction can be a function of displacement in another direction.
    - Motion Contacts
      Use the Contacts tool to create motion contacts between parts or sets of parts.
  - Flexible Bodies
    Convert rigid bodies or rigid groups to flexible bodies and review flexible body modes before running a motion analysis.
  - Motion References
  - Motion Outputs
  - Motion Control
  - Motion Analysis
    Run a motion analysis, plot the results, and extract the results for use in structural (FE) analysis and optimization.
Fluids
Prepare and run a computational fluid dynamics simulation.
Design Explorer
Evaluate designs by using geometric variables and applying a design-of-experiments (DOE) or optimization method. We recommend fully constraining your sketch when sketch variables are used in the design exploration.
Manufacture
Set up and run a basic porosity or thinning analysis.
Print 3D
Prepare and run an additive manufacturing simulation, and export a file for 3D printing.
Rendering
Adjust the materials and environment of objects in the scene to create a photorealistic image.
Inspire Python API
Learn how to access the Inspire Python API including online help, quick start demos, and the Extension Manager.
Reference
View the glossary, frequently asked questions, and errors and alerts.
Keyboard Shortcuts and Mouse Controls
Learn keyboard shortcuts and mouse controls for common operations.

Motion Properties

Table 1. Motion properties
Property Name	Description
General
Name	Descriptive name for the entity
Variable Name	The variable name, a unique identifier string of the entity
ID	A unique identifying integer
Use Virtual	Virtual is an expert option that is very similar to a kinematic constraint, but with soft constraint behavior that is useful for avoiding redundancy.
Using Markers	Defines the motion using markers. The markers should belong to two different bodies.
Marker 1	The 1^st marker on which motion is applied.
Marker 2	The 2^ndmarker. The motion is applied on Marker 1 with reference to this marker.
Direction	The direction in which motion is applied. You can choose to apply motion along either the translational or rotational axis of Marker 2.
Property	Select the kinematic method for applying Motion: Displacement, Velocity or Acceleration.
Signal
User-defined	This is an alternate to the Type choices. Motion can be defined using a user subroutine.
User expr	Solver expression USER call to the subroutine with arguments.
Use local file and function name	Optional. Provide a local file and function for the sub-routine.
Local file	Select a file for the subroutine based on Function type.
Function type	Select the type of file. DLL, Python, MATLAB or Compose.
Function name	Name of the function within the subroutine file that needs to be called.
Properties
Type	Linear Spline Spline3D Expression
Value (value)	A real value (or a reference data member of type real value).
Spline (value)	Reference to an existing Spline.
Spline3D (value)	Reference to an existing Spline3D.
Interpolation	Interpolation scheme to be used for the curve – AKIMA, CUBIC, LINEAR or QUINTIC.
Independent variable X	Solver expression to consider as the independent variable for Spline or the first independent variable for Spline3D.
Independent variable Z	Solver expression to consider as the second independent variable for Spline3D.
Expression (value)	Solver expression that describes the motion.
FlexBody Connection
Override
Connection Radius

If local file and filename is not used, the solver may use the subroutine based on its default search criteria. Refer the solver reference guide to learn more.