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Axisymmetric Hertzian Contact mechanics model

Posted 2011年10月4日 GMT-4 18:25 Studies & Solvers, Structural Mechanics Version 4.3 2 Replies

Vahid Vahdat
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Hi,

I am trying to model a sphere pushing on a surface. To do so, I have created a 2D axisymmetric model with a point load close to the apex of the half-circle; as putting a point load right at the apex which is on the axis of symmetry returns an error message most probably because of the singularity. Anyhow, the model does not work and either the two parts penetrate into each other or strangely get separated from each other (the point load is downward, so moving up is kind of unexpected). I defined the contact pair under the the model's definition and solid mechanics. Does anyone know why this happens? I thought maybe this is a common problem that might root in a simple mistake in defining the contact.

Thanks
Vahid
2 Replies Last Post 2013年8月13日 GMT-4 04:05
COMSOL Moderator

Hello Vahid Vahdat

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Marjan
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Posted: 1 decade ago 2012年10月1日 GMT-4 03:41
Hi Dear Vahid,

Look in the model library >tutorial> cylinder roller in contact :www.comsol.com/showroom/gallery/1431/. There you can check your setting. I think it will help you a lot.

Jumping is just an artifact that you observe as failure of solver, I think and only means your solver has failed.

All the best,
Marjan
Hi Dear Vahid, Look in the model library >tutorial> cylinder roller in contact :http://www.comsol.com/showroom/gallery/1431/. There you can check your setting. I think it will help you a lot. Jumping is just an artifact that you observe as failure of solver, I think and only means your solver has failed. All the best, Marjan
Muhammad Waleed
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Posted: 1 decade ago 2013年8月13日 GMT-4 04:05
Hello.

can anyone send me Hertzian contact model of comsol. i have no access to this tutorial.
thank you.
Hello. can anyone send me Hertzian contact model of comsol. i have no access to this tutorial. thank you.

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