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Shape memory alloys

Posted Apr 6, 2012, 8:10 p.m. EDT Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.2, Version 4.2a, Version 4.3, Version 5.2 14 Replies

Atma Bhawuk
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Hi.

I poseted a few days ago regarding a material model for nitinol.

I was wondering if anyone knows whether COMSOL has shape memory alloys, or superelastic materials in a library?

Or do I need to create a user defined library for superelastic materials?

Thanks,

Atma
14 Replies Last Post Feb 11, 2018, 12:31 p.m. EST
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Apr 7, 2012, 1:24 p.m. EDT
There is no built-in material model for shape memory alloys like Nitinol. You have to implement it yourself. That is not a trivial task, but doable. There is one example in the COMSOL model gallery called “Viscoplastic Creep in Solder Joints” that should be a good starting point as it shows how to implement the Anand viscoplastic material. I used a similar approach to implement a Bergstrom-Boyce material model for elastomers and it works.

Nagi Elabbasi
Veryst Engineering
There is no built-in material model for shape memory alloys like Nitinol. You have to implement it yourself. That is not a trivial task, but doable. There is one example in the COMSOL model gallery called “Viscoplastic Creep in Solder Joints” that should be a good starting point as it shows how to implement the Anand viscoplastic material. I used a similar approach to implement a Bergstrom-Boyce material model for elastomers and it works. Nagi Elabbasi Veryst Engineering
Rakesh Dhote
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Posted: 1 decade ago Apr 8, 2012, 10:51 p.m. EDT
There are no prebuilt libraries for shape memory alloys in comsol.
You can implement the governing equations in coefficient or generalized form.

There are couple of papers published on shape memory alloy modelling on the comsol website.
There are no prebuilt libraries for shape memory alloys in comsol. You can implement the governing equations in coefficient or generalized form. There are couple of papers published on shape memory alloy modelling on the comsol website.
Rakesh Dhote
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Posted: 1 decade ago Apr 8, 2012, 10:52 p.m. EDT
btw, what model are you planning to use?
btw, what model are you planning to use?
Atma Bhawuk
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Posted: 1 decade ago May 16, 2012, 7:47 p.m. EDT
Are there any papers in particular for SMA on COMSOL

I have looked at Thiebaud, Ghosh, and one other.

Thanks,
AB
Are there any papers in particular for SMA on COMSOL I have looked at Thiebaud, Ghosh, and one other. Thanks, AB
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 17, 2012, 2:12 a.m. EDT
Hi
From what I read in the release notes of 4.3, I believe this will be easier with the new release, there will be more advanced pre-cooked physics prepared. But I agreeit doesnt help for 4.2a ;)

--
Good luck
Ivar
Hi From what I read in the release notes of 4.3, I believe this will be easier with the new release, there will be more advanced pre-cooked physics prepared. But I agreeit doesnt help for 4.2a ;) -- Good luck Ivar
Adrián Lara
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Posted: 1 decade ago May 30, 2012, 8:22 a.m. EDT
Do you have any model or example about a SMA wire? Or some documentation for "semi"-beginners in COMSOL to learn to model this kind of materials?

Thanks in advance,
Do you have any model or example about a SMA wire? Or some documentation for "semi"-beginners in COMSOL to learn to model this kind of materials? Thanks in advance,
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 30, 2012, 8:47 a.m. EDT
Hi

no unfortunately not from my side, I have high expectations in the new release though, to fullfill one of my futur projects

--
Good luck
Ivar
Hi no unfortunately not from my side, I have high expectations in the new release though, to fullfill one of my futur projects -- Good luck Ivar
Adrián Lara
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Posted: 1 decade ago Jun 21, 2012, 8:08 a.m. EDT
Is anything new in COMSOL 4.3 that could help to this? I cannot believe that this material behaviour is not implemented yet... :-(

By the way, Ivar, thanks for all your help. I can see that you actively help hundreds of people here!
Is anything new in COMSOL 4.3 that could help to this? I cannot believe that this material behaviour is not implemented yet... :-( By the way, Ivar, thanks for all your help. I can see that you actively help hundreds of people here!
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Jun 27, 2012, 11:12 a.m. EDT
Hi

I'm also interested in examples of NiTi phase change models, particularly how V4.3 non -linear modelling might help us

--
Good luck
Ivar
Hi I'm also interested in examples of NiTi phase change models, particularly how V4.3 non -linear modelling might help us -- Good luck Ivar
Deepesh Meena
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Posted: 7 years ago Jun 29, 2017, 1:43 a.m. EDT
Hi,
Can anyone help me with how to proceed for shape memory effect in comsol ?
Hi, Can anyone help me with how to proceed for shape memory effect in comsol ?
Vasudha N
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Posted: 7 years ago Jul 31, 2017, 11:04 a.m. EDT
Hi,

There is a inbuilt material ti-ni in comsol 5.2 version.

But I am not sure if that takes care of the phase transformations(austenite to martensite and vice versa) internally.

Can anyone help me with the simulation of a SMA wire with comsol.

Regards
Vasudha
Hi, There is a inbuilt material ti-ni in comsol 5.2 version. But I am not sure if that takes care of the phase transformations(austenite to martensite and vice versa) internally. Can anyone help me with the simulation of a SMA wire with comsol. Regards Vasudha
VASUNDHARA M G
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Posted: 6 years ago Jan 31, 2018, 3:46 a.m. EST

Hi Inbuilt material Ti-Ni in comsol 5.3 version

How change the phase transformation from austenite to martensite , if any help models are there? How to give the material properties in comsol?

Please help me any one.......... Thanks Vasundhara

Hi Inbuilt material Ti-Ni in comsol 5.3 version How change the phase transformation from austenite to martensite , if any help models are there? How to give the material properties in comsol? Please help me any one.......... Thanks Vasundhara
Henrik Sönnerlind COMSOL Employee

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Posted: 6 years ago Jan 31, 2018, 7:42 a.m. EST
Updated: 6 years ago Jan 31, 2018, 9:16 a.m. EST

Hi,

From version 5.3a, there is a built in material model in Solid Mechanics for shape memory alloys. The material data in the Ni-Ti material in Material Library does however not contain any of the neccessary phase transformation parameters.

For some examples of how to use the Shape Memory Alloy material model, please refer to

https://www.comsol.com/model/uniaxial-loading-of-shape-memory-alloy-54871

This is the same example as is shipped with the product in Application Libraries -> Nonlinear Structural Materials Module -> Shape Memory Alloys -> Uniaxial Loading of Shape Memory Alloy.

Regards,

Henrik

-------------------
Henrik Sönnerlind
COMSOL
Hi, From version 5.3a, there is a built in material model in Solid Mechanics for shape memory alloys. The material data in the Ni-Ti material in Material Library does however not contain any of the neccessary phase transformation parameters. For some examples of how to use the Shape Memory Alloy material model, please refer to This is the same example as is shipped with the product in Application Libraries -> Nonlinear Structural Materials Module -> Shape Memory Alloys -> Uniaxial Loading of Shape Memory Alloy. Regards, Henrik
michael
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Posted: 6 years ago Feb 11, 2018, 12:31 p.m. EST

Hi, Is there any way something like the "Uniaxial Loading of Shape Memory Alloy" Application example can be carried out in the previous version of Comsol, ie. version 5.3? rgds Michael

Hi, Is there any way something like the "Uniaxial Loading of Shape Memory Alloy" Application example can be carried out in the previous version of Comsol, ie. version 5.3? rgds Michael

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