I have a question about simulating a joint w/o connector
hardware parts in the assembly. The pivot end of a cylinder
assembly is mated axis-to-axis with the the bushings in the arm
sub-assembly. Using ComosMotion, how can the joint be properly
constrained without adding a SW connector part in the main
assembly?
In CosmosWorks for FEA, an option exists to add a connector pin or bolt to an assembly (w/o inserting a SW part file). How is this done using ComosMotion 2007? I have not yet decided what type of connector hardware to use for this joint (shoulder bolt, pin, etc.) and would like to run the simulation without adding extra parts.
In CosmosWorks for FEA, an option exists to add a connector pin or bolt to an assembly (w/o inserting a SW part file). How is this done using ComosMotion 2007? I have not yet decided what type of connector hardware to use for this joint (shoulder bolt, pin, etc.) and would like to run the simulation without adding extra parts.
The simple way you would represent these is by including different mates. You can have a concentric mate to represent the shaft of the pin or bolt and then use a coincident or distance mate to lock transation of the cylinder lug along the bolt axis. These transfor forces from the cylinder to the mounting lug.
The impact of these options really depends on restraints at the other end of the cylinder. Do these already prevent the cylinder from moving side to side? If not, then you will need something to lock that or the cylinder will slide.
If you want more levels of refinement, then you can add 3-D contacts that would allow the cylinder slide on the bolt/pin and hit the mounting lugs, but is that what you need to study? For bolts or pins, the main interest is going to be on the bearing load and then size the bolt or pin that carry that load right? If you're concerned about alingment, then you're going to be putting in bushings of some sort to heep the cylinder centrally located between the lugs.
This is the flexibility in motion where you can have the bolt/pin there or just have a mate representing it.
Hope this helps.
Cheers,
Ian