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full model of a coil spring?
Posted Mar 18, 2014, 2:35 p.m. EDT 3 Replies
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Hello,
I'd like to model a coil spring, to include changes in diameter due to compression, and longitudinal and torsional modes. Is this a reasonable task for Comsol, or would it be prohibitively complex?
Perhaps it's already been done and there are sample models?
Thanks!
-Andy
I'd like to model a coil spring, to include changes in diameter due to compression, and longitudinal and torsional modes. Is this a reasonable task for Comsol, or would it be prohibitively complex?
Perhaps it's already been done and there are sample models?
Thanks!
-Andy
3 Replies Last Post Mar 18, 2014, 10:31 p.m. EDT
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Posted:
1 decade ago
Hi Andrew,
It’s a reasonable task in my opinion. Select physically accurate boundary conditions depending on whether the ends of the coil are allowed to rotate or twist. Also if you compress the spring enough then account for contact.
Nagi Elabbasi
Veryst Engineering
It’s a reasonable task in my opinion. Select physically accurate boundary conditions depending on whether the ends of the coil are allowed to rotate or twist. Also if you compress the spring enough then account for contact.
Nagi Elabbasi
Veryst Engineering
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Posted:
1 decade ago
Thanks Nagi.
I presume I would need a moving mesh, since the displacement is greater than the width of one of the helicies?
My force input is from a speaker coil attached to one end of the spring, which would exert force only in the axial direction.
Thanks again,
Andy
I presume I would need a moving mesh, since the displacement is greater than the width of one of the helicies?
My force input is from a speaker coil attached to one end of the spring, which would exert force only in the axial direction.
Thanks again,
Andy
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Posted:
1 decade ago
Hi Andy,
No need for a moving mesh. COMSOL uses a Lagrangian framework for structural problems so if the deformations are large the mesh will move “automatically”.
Nagi Elabbasi
Veryst Engineering
No need for a moving mesh. COMSOL uses a Lagrangian framework for structural problems so if the deformations are large the mesh will move “automatically”.
Nagi Elabbasi
Veryst Engineering