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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Deformation in a Tire

Posted 27.04.2013, 12:47 GMT-4 Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.3, Version 4.3a 1 Reply

TJ Rumbaugh
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Hi everyone,

I am currently trying to model a tire going over a ledge and examining the stresses and deformation caused by the impact of the ledge with the tire. I am applying applying 5000 N of force that is dependent on the location of the ledge. In other words, the force in the x direction is 5000*cos(theta) in the x direction and 5000*sin(theta) in the z direction, where theta varies between 220 and 270 degrees. There is also an internal pressure being applied of 70 psi.

I am having trouble actually getting the deformation to occur. The force is applied in the area where the ledge meets the tire, but no deformation actually occurs.

If you need more information I will gladly provide it. Any insight is greatly appreciated.

Thanks


The attached picture is one of the results I am getting. A force is applied in that small cut-out region that represent where the ledge meets the tire. As shown, stresses are caused by the force, but no deformation occurs. The inside part of the tire has a fixed constraint on it, which is where the metal would be on a real tire.

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1 Reply Last Post 29.04.2013, 17:07 GMT-4
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 29.04.2013, 17:07 GMT-4
Make sure you are scaling displacements appropriately in the results node. Expand that node, right click on the Surface plot, and select Deformation (if it’s not selected already, in which case you’ll see it as a sub-node under the surface plot).

Nagi Elabbasi
Veryst Engineering
Make sure you are scaling displacements appropriately in the results node. Expand that node, right click on the Surface plot, and select Deformation (if it’s not selected already, in which case you’ll see it as a sub-node under the surface plot). Nagi Elabbasi Veryst Engineering

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