COSMOSMotion Slides

What is COSMOSMotion?

• COSMOSMotion is a rigid body kinematics and dynamic simulation software that is fully integrated in SolidWorks

• COSMOSMotion simulates the real life working of your mechanism

• It is used by students, designers, engineers and other professionals to produce efficient and optimized designs

Traditional Design Cycle

• Use SolidWorks to build the model• Manufacture a prototype• Test the model under various

conditions. Instrumentation is needed in most cases

• Based on the results, modify the model in SolidWorks, build a prototype, and test again until you are satisfied with the design

• Send the drawings to manufacturing

Design Cycle with COSMOSMotion

• Use SolidWorks to build the model• Use COSMOSMotion to test the

model virtually on a computer• Based on the results, modify the

model and simulate until you are satisfied with the design

• Build the prototype for further testing

• Send the drawings to manufacturing

Benefits of using COSMOSMotion

• Reduces the number of prototypes needed for testing

• Reduces the design time and thereby time to market

• Reduces the engineering design cost due to reduced physical testing

• Optimize your designs by quickly simulating many concepts and scenarios before making a final decision

What can COSMOSMotion do?

• Determine how the mechanism (assemblies) will move

• Find Clearance/Interference through entire range of motion

• Determine how forces effect the mechanism• Determine reaction forces, spring forces, loads,

torques, accelerations, velocities• Create trace path and Cam profile• Size actuators, motors, springs and dampers• Provide loading information for design validation

What is Motion Simulation?

• How parts in an assembly will move is determined by:– Joints connecting the part– Driving motions applied to joints– The mass properties of parts– Applied Forces to the system (Dynamics)– Time

• COSMOSMotion allows you to input these parameters and show you how parts in an assembly will move

Key Engineering Problems addressed by COSMOSMotion

• Size motors and actuators• Determine power consumption• See how friction will increase power

requirements and actuators size• Design Force Transmission• Spring and damper stiffness• Design Hydraulic actuators• Reduce vibrations. Understand imbalance

effects on mechanisms• Determine boundary conditions for stress

analysis

Joints

• A joint is used to constrain the relative motion of a pair of rigid bodies by physically connecting them

• Joints are automatically created from SolidWorks mates

• COSMOSMotion also allows users to create joints manually

Types of Motion

• Free

• Displacement

• Velocity

• Acceleration

• Displacement, Velocity and Acceleration can be constant or a function of time

• Types of Functions: Step, Harmonic, Spline and Expression

Spring and Dampers

• Types of Springs in COSMOSMotion– Translation Spring– Torsion Spring– Non linear Spring

• Types of Dampers in COSMOSMotion– Translation Damper– Torsion Damper– Non linear Damper

Types of Forces

• Gravity

• Applied Forces– Action only force– Action only moment– Action/Reaction force– Action/Reaction moment– Impact force

Analysis Steps

• Create the model in SolidWorks and apply materials

• Select Fixed parts and Moving parts• Automatically derive joints from SolidWorks

assembly mates• Define motion to the joints• Create springs, dampers, forces if needed• Run the motion simulation• View the results

View Results

• Play Animations of Motion

• Check for Interference

• Plot Numerical Data

• Display Result Symbols

• Create Trace Path and Cam Profile

• Export Forces to COSMOSWorks