2:15
Friction on an inclined plane
A block on an inclined plane: the holding force when raising and lowering, with and without friction. Using constraints, you quickly check many variants.
Example · Basics · ASOM
Joint friction in revolute joints
ASOM calculates friction directly in the revolute joints of the model – so you see how much additional force it takes.
4:18
The task
How much force is lost to friction?
A four-bar linkage is used to show how much the friction in the revolute joints changes the required manual force and the forces in the joints.
What ASOM shows here
- Pin diameter and friction coefficient for each revolute joint in a dedicated joint friction element.
- Manual force and joint forces with and without friction side by side, plus the friction torque – in the diagram and as arrows on the model.
- Small jumps in the curves show where the direction of rotation between two mating parts reverses; easy to see with the coupler as the reference element.
Your benefits
Know friction losses early
You factor in friction as early as the conceptual design stage instead of having to make corrections later.
Fewer surprises
You know what friction costs before the first prototype. More on force calculation
Drives with headroom
With friction factored in, you avoid undersizing drives and springs.
Size pins and bearings
The joint forces with friction are the basis for sizing pins and bearings. More on forces in the model
More examples
All example videos
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