Hi this might be a silly question, but am not able to find a way to get the mass matrix from the problem in sfepy.
I can get the stiffness matrix K but how to get the Mass matrix M.
Any help is appreciated. Thanks
Hi,
On 01/30/2015 06:27 PM, Sukhbinder Singh wrote:
Hi this might be a silly question, but am not able to find a way to get the mass matrix from the problem in sfepy.
I can get the stiffness matrix K but how to get the Mass matrix M.
the mass matrix can be obtained using the dw_volume_dot term, see [1].
r. [1] http://sfepy.org/docdevel/examples/linear_elasticity/linear_elastic_damping...
Thanks. I will give it a try.
On 01/31/2015 04:55 AM, Sukhbinder Singh wrote:
Thanks. I will give it a try.
Check also our modal analysis example [1].
r.
[1] http://sfepy.org/docdevel/examples/standalone/interactive/modal_analysis.ht...
Thanks Robert. I found it and it worked..
Is there any plan to include other elements other than the already existing ones?
How difficult it is? I would like to contribute if its okay?
Thanks Sukhbinder
On Tuesday, February 3, 2015 at 7:33:25 PM UTC+5:30, Robert Cimrman wrote:
On 01/31/2015 04:55 AM, Sukhbinder Singh wrote:
Thanks. I will give it a try.
Check also our modal analysis example [1].
r.
[1] http://sfepy.org/docdevel/examples/standalone/interactive/modal_analysis.ht...
On 02/03/2015 05:14 PM, Sukhbinder Singh wrote:
Thanks Robert. I found it and it worked..
Good.
Is there any plan to include other elements other than the already existing ones?
How difficult it is? I would like to contribute if its okay?
You mean adding a new term to [1], right? It is somehow described in the docs [2], and it is not so easy  for a decent speed, either a vectorization with numpy or using C or Cython is needed.
Or you mean adding e.g. vector elements like Nedelec for electromagnetics?
Anyway, contributions are welcome!
r. [1] http://sfepy.org/docdevel/terms_overview.html [2] http://sfepy.org/docdevel/developer_guide.html#howtoimplementanewterm
Thanks Sukhbinder
On Tuesday, February 3, 2015 at 7:33:25 PM UTC+5:30, Robert Cimrman wrote:
On 01/31/2015 04:55 AM, Sukhbinder Singh wrote:
Thanks. I will give it a try.
Check also our modal analysis example [1].
r.
[1] http://sfepy.org/docdevel/examples/standalone/interactive/modal_analysis.ht...
On Tuesday, February 3, 2015 at 10:09:08 PM UTC+5:30, Robert Cimrman wrote:
On 02/03/2015 05:14 PM, Sukhbinder Singh wrote:
Thanks Robert. I found it and it worked..
Good.
Is there any plan to include other elements other than the already existing ones?
How difficult it is? I would like to contribute if its okay?
You mean adding a new term to [1], right? It is somehow described in the docs [2], and it is not so easy  for a decent speed, either a vectorization with numpy or using C or Cython is needed.
I meant other element types, tetra, 6 noded triangle etc
Or you mean adding e.g. vector elements like Nedelec for electromagnetics?
Anyway, contributions are welcome!
Thanks for your prompts answers. Have just discovered sfepy. Loving it . Want to use it as a user for some time now.
r. [1] http://sfepy.org/docdevel/terms_overview.html [2] http://sfepy.org/docdevel/developer_guide.html#howtoimplementanewterm
Thanks Sukhbinder
On Tuesday, February 3, 2015 at 7:33:25 PM UTC+5:30, Robert Cimrman wrote:
On 01/31/2015 04:55 AM, Sukhbinder Singh wrote:
Thanks. I will give it a try.
Check also our modal analysis example [1].
r.
[1]
http://sfepy.org/docdevel/examples/standalone/interactive/modal_analysis.ht...
On 02/03/2015 06:47 PM, Sukhbinder Singh wrote:
On Tuesday, February 3, 2015 at 10:09:08 PM UTC+5:30, Robert Cimrman wrote:
You mean adding a new term to [1], right? It is somehow described in the docs [2], and it is not so easy  for a decent speed, either a vectorization with numpy or using C or Cython is needed.
I meant other element types, tetra, 6 noded triangle etc
Tetras are supported, see [1]. 6 noded triangle not. But you can use higher order approximations [2] (approx_order)  the extra nodes are automatically created by linear interpolation of the vertices. What is missing is a curved boundary support here  a straight facet stays straight.
[1] http://sfepy.org/docdevel/users_guide.html#femesh [2] http://sfepy.org/docdevel/users_guide.html#fields
Or you mean adding e.g. vector elements like Nedelec for electromagnetics?
Anyway, contributions are welcome!
Thanks for your prompts answers. Have just discovered sfepy. Loving it . Want to use it as a user for some time now.
Welcome aboard :)
r.
participants (2)

Robert Cimrman

Sukhbinder Singh