Extract Matrices from CALC_MODAL

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Christian
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11 years 2 days ago #7549 by Christian

Extract Matrices from CALC_MODAL was created by Christian

Hi all,

does anyone of you know, how I can print out or extract the mass and stiffness matrix of a model, which are generated by the CALC_MODAL macro command?
Thanks for your help,

Cheers!

kwou
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11 years 1 day ago - 11 years 1 day ago #7552 by kwou

Replied by kwou on topic Re: Extract Matrices from CALC_MODAL

Hoi Hefti

You can extract the mass of groups and print it by the following commands (in this case shell elements)

....
masshell=POST_ELEM(MASS_INER=_F(GROUP_MA='shell',),
                  MODELE=modmod,
                  CHAM_MATER=material,
                  CARA_ELEM=shellch,);

IMPR_TABLE(TABLE=masshell,NOM_PARA='MASSE',);
...

I guess you can use it for calc_modal as well, if you use the same groups. See:
www.caelinux.org/wiki/index.php/Contrib:...al_mass_of_the_plate

Interest: structural mechanics, solar energy (picture at 'my location' shows too little pv panels)

--
kind regards - kees

Last edit: 11 years 1 day ago by kwou.

RichardS
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11 years 9 hours ago #7553 by RichardS

Replied by RichardS on topic Re: Extract Matrices from CALC_MODAL

Hello,
I think what you are looking for is the command EXTR_MATR() which returns the matrix in python array format.

mod_meca =MACRO_MODE_MECA(
	MATR_RIGI=matrrigi,
	MATR_MASS=matrmass,
	...)

rigipy = matrrigi.EXRT_MATR()
masspy = matrmass.EXTR_MATR()

Best regards,
Richard

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Christian
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10 years 11 months ago #7555 by Christian

Replied by Christian on topic Re: Extract Matrices from CALC_MODAL

Thanks for the help. The POST_ELEM command worked out fine!

Cheers!

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