Rubber contraction simulation
Rubber contraction simulation
(OP)
Hello dear friends,
I have some issues, sometimes, when I try to simulate the contraction of metal/rubber bodies after molding. Right now I'm using the isotropic secant coefficient of thermal expansion, in Ansys 16. Sometimes by using this coefficient my results are according to reality but sometimes they aren't. Has anyone here tried to simulate the rubber contraction in Ansys? If yes, have you obtained good results? And again, if the answer is still yes, how you've done that?
Thank you!
I have some issues, sometimes, when I try to simulate the contraction of metal/rubber bodies after molding. Right now I'm using the isotropic secant coefficient of thermal expansion, in Ansys 16. Sometimes by using this coefficient my results are according to reality but sometimes they aren't. Has anyone here tried to simulate the rubber contraction in Ansys? If yes, have you obtained good results? And again, if the answer is still yes, how you've done that?
Thank you!





RE: Rubber contraction simulation
RE: Rubber contraction simulation
RE: Rubber contraction simulation
For my application we were thermally curing our product. Upon removal of the part shrinking and deformation was occurring. The simulation went through the following steps.
1. Initial geometry of cold mold and negative of mold modeled.
2. Heat up mold causing expansion due to CTE
3. Force the part to expand with the mold
4. Anneal the part
5. Cool allowing plastic deformation in part
6. Open mold
7. Remove part
8. Measure part
Hopefully this will parallel your needs enough to be useful.
Rob Stupplebeen
www.optimaldevice.com
https://sites.google.com/site/robertkstupplebeen/
RE: Rubber contraction simulation
Thank you again!
RE: Rubber contraction simulation
Have Fun!
James A. Pike
www.xl4sim.com
www.erieztechnologies.com
RE: Rubber contraction simulation
So there are many factors which affect this contraction( I was aware of that).
Can I input them somehow, beside, the isotropic secant coefficient of thermal expansion in a simulation in Ansys so the results would be more accurate?
Has anyone tried this and succeeded? I know that it matters the temperature of molding, the time in which the molding is done, etc.
Thank you all!
Any idea is more than appreciated!