CSWP Motion Studies 3 — Questions and Answers
Question 1: Which option must be enabled in a Motion Analysis study to account for the effect of gravity on component motion?
- Apply Gravity under Motion Study Properties (Correct answer)
- Add a Fixed constraint to the ground plane
- Set a Force with direction 'Down' on each body
- Enable 'Gravity' in the FeatureManager
Correct answer: Apply Gravity under Motion Study Properties
Gravity is enabled via Motion Study Properties (or the Gravity tool in the Motion toolbar), where magnitude and direction are specified.
Question 2: What does a 'damper' element contribute to a Motion Analysis simulation?
- It increases spring stiffness over time
- It dissipates energy by applying a force opposing velocity (Correct answer)
- It locks components at a fixed distance
- It applies a constant external torque
Correct answer: It dissipates energy by applying a force opposing velocity
A damper applies a resistive force proportional to relative velocity (F = c·v), removing energy from the system over time.
Question 3: In SOLIDWORKS Motion Studies, what is the function of the 'Camera' feature on the timeline?
- Triggers a render at that time step
- Animates the camera position/orientation over time for fly-through animations (Correct answer)
- Locks the viewport to an isometric view
- Sets lighting intensity at a key frame
Correct answer: Animates the camera position/orientation over time for fly-through animations
Adding a Camera to the timeline lets you animate view direction and position so the saved animation follows a custom camera path.
Question 4: What type of mate suppression behavior is recommended before running a Motion Analysis study?
- Suppress all mates to allow free motion
- Keep all mates active so the solver can reference them as constraints (Correct answer)
- Delete coincident mates and replace with contact
- Convert all mates to rigid groups
Correct answer: Keep all mates active so the solver can reference them as constraints
Mates act as kinematic constraints in the Motion Analysis solver; keeping them active correctly restricts degrees of freedom.
Question 5: Which result quantity can be plotted in Motion Analysis to evaluate whether a mechanism is over- or under-constrained?
- Degrees of Freedom (DOF) count
- Redundant Constraint count from the solver message (Correct answer)
- Mass of each moving body
- Surface contact area
Correct answer: Redundant Constraint count from the solver message
The Motion Analysis solver reports redundant constraints; too many indicate over-constrained mechanisms that may cause solver failures.
Question 6: In an Animation study, which toolbar button records the current component positions as key points at the current time marker?
- Calculate
- Save Animation
- Autokey (Record) (Correct answer)
- Place Camera
Correct answer: Autokey (Record)
The Autokey (Record) button, when enabled, automatically creates key points whenever you move components while the time marker is not at zero.
Question 7: What is the effect of setting a motor's 'Displacement' function to a sine wave in Motion Analysis?
- The motor applies a sinusoidal force
- The motor position oscillates sinusoidally over time (Correct answer)
- The motor runs at constant speed regardless of load
- The motor reverses direction at each zero crossing of force
Correct answer: The motor position oscillates sinusoidally over time
When the Displacement function is defined as a sine wave, the driven component's position follows that sinusoidal pattern over time.
CSWP Motion Studies 3
Which option must be enabled in a Motion Analysis study to account for the effect of gravity on component motion?