[GiDlist] Algorithm used in Smooth Contour Fill

GiDList Archive 2013 - 2005
1

Hello:

Can you please help with following questions:

  1. What is algorithm used for Smooth Contour Fill?

  2. What are equations used for calculating Si, Sii, Siii from 6 components
    of Matrix type in post-processing?

Thank you in advance.
Regards,
Thanh
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2

Hi,

explained in GiD’s help and in :

http://www.gidhome.com/support_team/gidbeta/gid125.html#POSTPROCESS%20RESULT
S%3ESmooth%20Contour%20Fill

http://www.gidhome.com/support_team/gidbeta/gid148.html#POSTPROCESS%20DATA%2
0FILES%3EPostprocess%20results%20format:%20ProjectName.post.res%3EResult%20b
lock



1.- foreach element incident to a node, the gauss point results are
extrapolated to the nodes. Then from the set of extrapolated values for that
node,

GiD uses:

  • the minimum value if ‘Options–Contour–Smoothing type–minimum value’
    is selected;

  • the maximum value if ‘Options–Contour–Smoothing type–maximum value’
    is selected;

  • the mean value if ‘Options–Contour–Smoothing type–mean value’ is
    selected ( == sum(all values) / NumValues)



    2.- When a stress matrix is read, GiD calculates the eigen vectors and eigen
    values of this matrix, then sort them according to the eigen values, being
    Si the biggest value and Siii the smallest one.



    Miguel Pasenau



    –

Miguel Pasenau @: miguel at cimne.upc.edu

Despacho C2, Edifico C1, Campus Norte UPC, c/ Gran Capitán s/n

08034 - Barcelona ( SPAIN)

T: +34 3 93 401 74 03 F: +34 3 93 401 65 17

IMPORTANT NOTICE

All personal data contained in this mail will be processed confidentially
and stored in a file property of CIMNE in order to manage corporate
communications. You may exercise the right of access, rectification,
deletion and objection by letter sent to CIMNE, Gran Capitán, Edificio C1 -
Campus Norte UPC, 08034 Barcelona, Spain.



De: gidlist-admin at gatxan.cimne.upc.edu
[mailto:gidlist-admin at gatxan.cimne.upc.edu] En nombre de Thanh Chau Dinh
Enviado el: miércoles, 20 de enero de 2010 16:59
Para: gidlist at gatxan.cimne.upc.edu
Asunto: [GiDlist] Algorithm used in Smooth Contour Fill



Hello:



Can you please help with following questions:


\

  1. What is algorithm used for Smooth Contour Fill?


    \
  2. What are equations used for calculating Si, Sii, Siii from 6 components
    of Matrix type in post-processing?



    Thank you in advance.

Regards,

Thanh

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3

2- Eigenvalues/eigenvector are calculated with an iterative Jacobi method

(see “Numerical Recipes in C” at http://www.nrbook.com/a/bookcpdf.php , chapter 11.1)

----- Original Message -----
From: Miguel Adolfo Pasenau de Riera
To: gidlist at gatxan.cimne.upc.edu
Sent: Monday, January 25, 2010 4:05 PM
Subject: RE: [GiDlist] Algorithm used in Smooth Contour Fill


Hi,

explained in GiD’s help and in :

http://www.gidhome.com/support_team/gidbeta/gid125.html#POSTPROCESS%20RESULTS>Smooth%20Contour%20Fill

http://www.gidhome.com/support_team/gidbeta/gid148.html#POSTPROCESS%20DATA%20FILES>Postprocess%20results%20format:%20ProjectName.post.res>Result%20block



1.- foreach element incident to a node, the gauss point results are extrapolated to the nodes. Then from the set of extrapolated values for that node,

GiD uses:

  • the minimum value if ‘Options–Contour–Smoothing type–minimum value’ is selected;

  • the maximum value if ‘Options–Contour–Smoothing type–maximum value’ is selected;

  • the mean value if ‘Options–Contour–Smoothing type–mean value’ is selected ( == sum(all values) / NumValues)



    2.- When a stress matrix is read, GiD calculates the eigen vectors and eigen values of this matrix, then sort them according to the eigen values, being Si the biggest value and Siii the smallest one.



    Miguel Pasenau



    –

Miguel Pasenau @: miguel at cimne.upc.edu

Despacho C2, Edifico C1, Campus Norte UPC, c/ Gran Capitán s/n

08034 - Barcelona ( SPAIN)

T: +34 3 93 401 74 03 F: +34 3 93 401 65 17

IMPORTANT NOTICE

All personal data contained in this mail will be processed confidentially and stored in a file property of CIMNE in order to manage corporate communications. You may exercise the right of access, rectification, deletion and objection by letter sent to CIMNE, Gran Capitán, Edificio C1 - Campus Norte UPC, 08034 Barcelona, Spain.



De: gidlist-admin at gatxan.cimne.upc.edu [mailto:gidlist-admin at gatxan.cimne.upc.edu] En nombre de Thanh Chau Dinh
Enviado el: miércoles, 20 de enero de 2010 16:59
Para: gidlist at gatxan.cimne.upc.edu
Asunto: [GiDlist] Algorithm used in Smooth Contour Fill



Hello:



Can you please help with following questions:


\

  1. What is algorithm used for Smooth Contour Fill?


    \
  2. What are equations used for calculating Si, Sii, Siii from 6 components of Matrix type in post-processing?



    Thank you in advance.

Regards,

Thanh
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4

Hello:
Thanks for your clear reply.
Thanh

On Tue, Jan 26, 2010 at 12:05 AM, Miguel Adolfo Pasenau de Riera
miguel at cimne.upc.edu wrote:

Hi,
explained in GiD’s help and in :

_http://www.gidhome.com/support_team/gidbeta/gid125.html#POSTPROCESS%20RESULTS>Smooth%20Contour%20Fill_

_http://www.gidhome.com/support_team/gidbeta/gid148.html#POSTPROCESS%20DATA%20FILES>Postprocess%20results%20format:%20ProjectName.post.res>Result%20block_


1.- foreach element incident to a node, the gauss point results are
extrapolated to the nodes. Then from the set of extrapolated values for that
node,
GiD uses:
- the minimum value if ‘Options–Contour–Smoothing type–minimum value’
is selected;
- the maximum value if ‘Options–Contour–Smoothing type–maximum value’
is selected;
- the mean value if ‘Options–Contour–Smoothing type–mean value’ is
selected ( == sum(all values) / NumValues)


2.- When a stress matrix is read, GiD calculates the eigen vectors and
eigen values of this matrix, then sort them according to the eigen values,
being Si the biggest value and Siii the smallest one.


Miguel Pasenau


–
----------------------------------------------------------------
Miguel Pasenau @: miguel at cimne.upc.edu
Despacho C2, Edifico C1, Campus Norte UPC, c/ Gran Capitán s/n
08034 - Barcelona ( SPAIN)
T: +34 3 93 401 74 03 F: +34 3 93 401 65 17
----------------------------------------------------------------
IMPORTANT NOTICE
All personal data contained in this mail will be processed confidentially
and stored in a file property of CIMNE in order to manage corporate
communications. You may exercise the right of access, rectification,
deletion and objection by letter sent to CIMNE, Gran Capitán, Edificio C1 -
Campus Norte UPC, 08034 Barcelona, Spain.


De: gidlist-admin at gatxan.cimne.upc.edu [mailto:
gidlist-admin at gatxan.cimne.upc.edu] *En nombre de *Thanh Chau Dinh
Enviado el: miércoles, 20 de enero de 2010 16:59
Para: gidlist at gatxan.cimne.upc.edu
Asunto: [GiDlist] Algorithm used in Smooth Contour Fill


Hello:


Can you please help with following questions:


1. What is algorithm used for Smooth Contour Fill?


2. What are equations used for calculating Si, Sii, Siii from 6 components
of Matrix type in post-processing?


Thank you in advance.
Regards,
Thanh
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