Axial Spring

• An axial spring is a connection between two points or vertices on two rigid bodies.
• An axial spring exerts an equal force but opposed on each attached body, along the direction defined by the points or vertices.
• The force exerted can be:
  • Bidirectional, that is in compression and in extension
  • In compression only (the extension force is null)
  • In extension only (the compression force is null)
• The axial spring parameters are stiffness, damping, and reference length.
  • By default, the value of the length is equal to the distance between the two points specified at spring creation.

Note: A representation of the axial spring is displayed and animated when:

• Playing Experience and running kinematic simulation in Mechanical Systems Design app.
• Running a simulation in Mechanical Systems Experience app.

Gravity

You can edit the gravity force applied to a mechanism and accounted for when playing the mechanism.

To edit gravity, you can:

• turn it on and off
• reverse its orientation
• specify a direction according to the mechanism orientation
• change its value.

Steps to Simulate a Vibration System

• Open or create an assembly (at least two rigid bodies)
• Switch to Mechanical Systems Design App.

You can add an axial spring connection between two components involved in the simulation.

• From the Mechanical Systems Design section of the action bar, click Axial Spring.
  • The Connection Property dialog box appears.
• Select the first and second support of the axial spring.
  • Note: The supports must be either a point or a vertex belonging to another component.
• In the Elasticity tab, select the direction of the force, Fx
• Select the type of force exerted by the axial spring:
  • Bidirectional
  • Compression only
  • Extension only
• Select the type of translational stiffness:
  • Select Linear and enter the value of the force over displacement.
  • Select Nonlinear and enter the values of the force over displacement in the table.
• In the Damping tab, select the force and define the damping value over displacement based on a linear or a nonlinear law.
• In the Ref. Length tab, indicate the reference length associated with the component.
  • Note: By default, the reference length is calculated from the initial geometry.
• Click OK.

A spring engineering connection is created under the Engineering Connections node of the active product.

This engineering connection contains the Axial Spring connection definition under the Simulation connections node.

• Fix one of the part/rigid body
• Browse and Apply Material
• Compute Weight
• Create a Mechanism
• Switch to Mechanical Systems Experience App.
  • Note: Create a Simulation Object
• Add Gravity
• Add Probe
• Create a Dynamics Scenario 
• Preview the Simulation
• Compute the Simulation
• Analyze the Simulation

CAD + Simulation Data	Simulation Preview

Download and use more Mechanisms

https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/#community:AH6Out1lTB2kjqDkm0S-Qg/wiki:WpHLnOdCSu64zfumZJR_4Q

💪Powers of Mechanical System Design(MSD)
✅ Contact (⭐ friction, collision, etc.)
✅ Gravity ⭐
✅ Axial Spring
✅ Bushing 

💪Powers of Mechanical System Experience(MSE)
✅ Position Excitation
✅ Velocity Excitation
✅ Force Excitation
✅ Torque Excitation
✅ Sequence of Excitation
✅ Probes (⭐ position, speed, acceleration, joint force, etc.)
✅ Plots
✅ Traces

Recommended courses:
Practice CATIA Mechanical Systems Design
Practice CATIA Mechanical Systems Experience

Simulation Challenge:

​​​​​​​​​​​​​​Simulate and prove that,

Equivalent Stiffness of the following system, k = k1+ k2

Edu Mechanical Systems Design​​​​​​​​​​​​​​