Gas springs in Mechanism

[Pettersson]

Hi. Does anyone know of a way to simulate gas springs in Mechanism analyses in Creo? I can do regular springs, with a spring constant, but how can I model a gas spring with force and progressivity values? Do I recalculate these values into a spring constant and a relaxed length, and will this even be accurate? Anyone know of a guide or equation to use for this? I'd love to do it in Creo relations so I can optimize on the actual gas spring values.

[ChrisKaswer · Accepted solution]

This is a fairly simple problem to solve. You can create a user defined force that is a function of any other measure. Start by creating a measure for the response output you need to have your forcing function be dependent on. Then create a force with a user defined relation and make it dependent on this pre-defined measure. That should do it. This approach has worked for me countless times in the past. Optimization should be straightforward as well, once you have your forcing function established.

Good Luck!

[Pettersson]

Ah, of course, good thinking. That's a clever way to solve it, and I guess I can create all sorts of forces that way. Very useful! Thank you.