[ GiDlist ] erosion of elements?

GiDList Archive 2002 - 2000
1

Yes, during the analysis you can completely modify your mesh. Indeed, in
this case you are forced to write the new element conectivities and node
numbers in the ‘filename.flavia.msh’, as well as use the new node list in
the ‘filename.flavia.res’.
On the other hand, if you don’t modify your mesh during the analysis, only
the ‘filename.flavia.res’ has to be created.
-----Mensaje original-----
De: owner-gid at gatxan.cimne.upc.es [mailto:owner-gid at gatxan.cimne.upc.es]En
nombre de Matthew Profit
Enviado el: martes, 15 de mayo de 2001 18:32
Para: gidlist at gatxan.cimne.upc.es
Asunto: [ GiDlist ] erosion of elements?


Hello,

Is it possible to delete elements within gid?? for erosion or fracture
problems.

I’ve created the initial mesh in gid format for the post processor to
read, under the name “filename.flavia.msh”. This file reads in the number of
initial elements for the problem. If during the analysis some elements are
deleted is it possible to update the number of elements as the analysis is
running? Within the file named “filename.flavia.res”.

Thanks in advance,
Matthew
-------------- next part --------------
An HTML attachment was scrubbed…
URL: http://listas.cimne.upc.edu/pipermail/gidlist/attachments/20010515/0b0be493/attachment.htm

2

----- Original Message -----
From: Javier Mora
To: gidlist at gatxan.cimne.upc.es
Sent: Tuesday, May 15, 2001 5:47 PM
Subject: RE: [ GiDlist ] erosion of elements?


Yes, during the analysis you can completely modify your mesh. Indeed, in this case you are forced to write the new element conectivities and node numbers in the ‘filename.flavia.msh’, as well as use the new node list in the ‘filename.flavia.res’.
On the other hand, if you don’t modify your mesh during the analysis, only the ‘filename.flavia.res’ has to be created.

Hello again,

I’m sorry but i did not understand your initial e-mail with the following problems:

  1. If only ‘filename.flavia.res’ is used in the post-processor an error is returned asking for the *msh or *bon files.

  2. Whilst updating the *.msh file during the analysis, do you overwrite the file during each output? And then output the *.res file straight afterwardws? Or do you contiuue adding to the *msh as the output is required.

  3. Do you possess any examples on the Gid site showing how an erosion problem is dealt with?? I’ve looked but couldn’t find anything.

Thanks again

Matthew
-----Mensaje original-----
De: owner-gid at gatxan.cimne.upc.es [mailto:owner-gid at gatxan.cimne.upc.es]En nombre de Matthew Profit
Enviado el: martes, 15 de mayo de 2001 18:32
Para: gidlist at gatxan.cimne.upc.es
Asunto: [ GiDlist ] erosion of elements?


Hello,

Is it possible to delete elements within gid?? for erosion or fracture problems.

I’ve created the initial mesh in gid format for the post processor to read, under the name “filename.flavia.msh”. This file reads in the number of initial elements for the problem. If during the analysis some elements are deleted is it possible to update the number of elements as the analysis is running? Within the file named “filename.flavia.res”.

Thanks in advance,
Matthew
-------------- next part --------------
An HTML attachment was scrubbed…
URL: http://listas.cimne.upc.edu/pipermail/gidlist/attachments/20010522/48c9fcc8/attachment.htm

3

In GiD postprocess, actually the mesh is the same in all time steps.

In order to simulate the element erosion:

The analysis must create two files for result step: filestepi.flavia.msh and filestepi.flavia.res.
and then load in postprocess each result to visualize separatelly.

Another possibility is assign a too big value to nodes/elements to ignore in a result step, and then
visualize a resul, setting the upper limit with the maximun real value.

Best regards



----- Original Message -----
From: Matthew Profit
To: gidlist at gatxan.cimne.upc.es
Sent: Tuesday, May 22, 2001 4:25 PM
Subject: Re: [ GiDlist ] erosion of elements?



----- Original Message -----
From: Javier Mora
To: gidlist at gatxan.cimne.upc.es
Sent: Tuesday, May 15, 2001 5:47 PM
Subject: RE: [ GiDlist ] erosion of elements?


Yes, during the analysis you can completely modify your mesh. Indeed, in this case you are forced to write the new element conectivities and node numbers in the ‘filename.flavia.msh’, as well as use the new node list in the ‘filename.flavia.res’.
On the other hand, if you don’t modify your mesh during the analysis, only the ‘filename.flavia.res’ has to be created.

Hello again,

I’m sorry but i did not understand your initial e-mail with the following problems:

  1. If only ‘filename.flavia.res’ is used in the post-processor an error is returned asking for the *msh or *bon files.

  2. Whilst updating the *.msh file during the analysis, do you overwrite the file during each output? And then output the *.res file straight afterwardws? Or do you contiuue adding to the *msh as the output is required.

  3. Do you possess any examples on the Gid site showing how an erosion problem is dealt with?? I’ve looked but couldn’t find anything.

Thanks again

Matthew
-----Mensaje original-----
De: owner-gid at gatxan.cimne.upc.es [mailto:owner-gid at gatxan.cimne.upc.es]En nombre de Matthew Profit
Enviado el: martes, 15 de mayo de 2001 18:32
Para: gidlist at gatxan.cimne.upc.es
Asunto: [ GiDlist ] erosion of elements?


Hello,

Is it possible to delete elements within gid?? for erosion or fracture problems.

I’ve created the initial mesh in gid format for the post processor to read, under the name “filename.flavia.msh”. This file reads in the number of initial elements for the problem. If during the analysis some elements are deleted is it possible to update the number of elements as the analysis is running? Within the file named “filename.flavia.res”.

Thanks in advance,
Matthew
-------------- next part --------------
An HTML attachment was scrubbed…
URL: http://listas.cimne.upc.edu/pipermail/gidlist/attachments/20010523/f4161868/attachment.htm

4

Hi All
I wonder if it is possible to generate two type of
elements in the same model using GID.
ie: For example a quadratic brick element and a linear
line element.
I know we can generate different elements of the same
order(say only linear or only quadratic).Is it
possible to have both types together.Just curious to
know this.
gnana

Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail - only $35
a year! http://personal.mail.yahoo.com/

5

GiD has not thought to create linear and quadratic elements simultaneously,
but indirectly can be generated. For example:

  • Activates the MaintainOldMesh variable (Utilies Variable MaintainOldMesh
  1. so that it is asked the user if the existing mesh is deleted when
    remeshing.
  • Generate one of the two meshes, for example the quadratic hexahedra.
  • Set the volume to not generate mesh (MeshCriteria-NoMesh-Volumes)
  • Set Meshing-QuadraticElements to Normal way.
  • Mesh now the lines without destroying the hexahedral. (Cancelling old
    mesh? Not).


    ----- Original Message -----
    From: “Gunaratnam Gnanaranjan” gnana72 at yahoo.com
    To: gidlist at gatxan.cimne.upc.es
    Sent: Wednesday, June 06, 2001 8:40 PM
    Subject: [ GiDlist ] elements



    Hi All
    I wonder if it is possible to generate two type of
    elements in the same model using GID.
    ie: For example a quadratic brick element and a linear
    line element.
    I know we can generate different elements of the same
    order(say only linear or only quadratic).Is it
    possible to have both types together.Just curious to
    know this.
    gnana

Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail - only $35
_a year! http://personal.mail.yahoo.com/_