Properties for Vulcanized Rubber

[anantha]

Greetings:

I am modeling a rubber tire in Abaqus and am having a great difficulty in finding experimental test data for the tire constituents. I am assuming them to be vulcanized rubber, and I would be requiring uniaxial, biaxial test data (hyperelasticity) and viscoelastic data.

Any help/suggestions, leads, links in this regard would be of great help. Thanks in advance

- Anantha

[Jorgen]

Anantha,

What constituents of the tire are you working with? What materials do you need experimental data for? What material model are you planning on using?

There are all questions that will guide the selection of what experimental data to use. There is a lot of experimental data for rubber available in the literature. You can also find experimental data for a number of different elastomers in the Materials and Models (http://www.polymerfem.com/modules.php?name=Materials_Models) section of this web site.

Jorgen

[anantha]

Dr. Bergstrom:

Thank you for your prompt response. When I said constituents, I was referring to the main components of the tire like the Butadiene rubber, Styrene Butadiene rubber that the tires are comprised of.

I am intending to try to model the tire as made of these materials initially, without the presence of the steel beading or the polymer meshes. However, as my research progresses, it is inevitable that I *embed* these materials in the rubber core, as they contribute a lot towards the strength of the tire I am looking for in uniaxial tension and later under dynamic loading (pseudo seismic loads).

I was able to model the tire as a rubber donut without any reinforcements including hyperelastic properties from a sample data that I found. However I was not sure as to what kind of rubber it was or other specifics except that I knew it was some rubbery material. And its strength was very low, as it elongated to about 2.5 in. under a load of about 50 lb.

Hence, I was looking for data for rubber present in tires (I think BR, SBR) so that I could model them and see if there was any difference. Also, I would be requiring some tips on how to embed materials in Abaqus.

Thank you very much
Anantha

[Jorgen]

Hmm, I don't think I have any experimental data for butadiene rubber, or styrene butadiene rubber. It should be possible, however, to find exemplar experimental data in the literature, e.g. Rubber Chemistry and Technology or Tire Science.

If you don't find the data that you need, you will probably need to characterize the materials yourself. That might be a good idea anyway to make sure that you get the appropriate properties for the compounds that you are interested in.

Jorgen