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Check out this video on Mechanism Dynamics from PTC Application Engineers!
Presenters: Lino Tozzi (Technical Specialist, Fellow) and Tom Quaglia (Strategic Segment Specialist)
To dive deeper into the subject, check out PTC University
Question from Ryan: Is the truck box simulation taking the shock/spring weight into account?
Answer: All applicable weights are taken into consideration.
Question from James: Can constraint sets of both types, normal assembly constraints vs mechanisms constraints, be activated/deactivated such that a single assembly can be used as both a normally constrained assembly or a mechanism assembly? Or, is it either or...thus two assemblies are required if both a mechanism assembly is needed as well as a regularly constrained assembly?
Answer: You can have multiple constraints sets to pick and choose different combinations within the same assembly.
Question from James: So, a single assembly can be used for both mechanism and conventional assembly by simply toggling constraint sets? If this will not be demonstrated normally in this presentation, could Lino perform a quick demo of it (i.e. fully constrained assembly to mech assembly and vice versa)?
Answer: Within the same component, all constraint sets need to be of the same type. You could toggle between constraint types though.
Question from James: Is there a downside to assembling Mechanism Assemblies into "normally" constrained assemblies as sub-assemblies? Also, conversely, is there a downside to making normally constrained assemblies sub-assemblies to a mechanism assembly?
Answer: No downside.
Question from James: I understand that some forethought will be required, but does PTC have any rules or caveats to these scenarios?
Answer: Not that we can think of.
Question from Paul: These examples appear to be bottom-up engineering. Parts already exist. How would you develop the parts from top down?
Answer: We do have the ability to create motion skeletons with very little geometry and then add parts to that.
Question from Rafal: Is it possible to save a mechanism's motion as a surface or solid envelope and use it in the assembly as a reference?
Answer: You can create a motion envelope which will be a tesselation.