3:35
Symmetrical six-bar linkage for a door
A six-bar linkage guides a door, with the joints arranged symmetrically. The synthesis is built from constraints alone, and the start and end positions remain adjustable.
Example · Caravans · ASOM
Step ladder for a motorhome
Scissor mechanism or parallelogram linkage? For the fold-out, two-step ladder of a motorhome, ASOM compares both mechanisms in one project.
4:43
The task
Two solutions for the same ladder
The first variant is a six-bar scissor mechanism, the second a parallelogram linkage – which can also be understood as a special case of the same six-bar linkage type. For both variants, a suitable solution and the required torques are to be found. In addition, there are forces that depend on whether the steps are retracted or extended.
What ASOM shows here
- Both variants are in separate folders of the element tree and can be compared directly.
- A kinematic synthesis finds the solution for each variant, and the force analysis provides the required torques.
- Forces defined by script act depending on whether the steps are retracted or extended.
Your benefits
Identify the better variant early
You compare both mechanisms in one project and see early on which torque each variant requires.
Reach a solution faster
The synthesis provides suitable linkages, so you do not have to try out joint positions by hand. More on syntheses
One project, two concepts
Both variants stay in the same project, and you compare every change directly.
Your knowledge in the model
With scripts, you capture your own rules, such as forces that depend on the position of the steps. More on scripts
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