Recording stiffness in zerolength element

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sattar
Posts: 8
Joined: Thu Apr 15, 2010 3:11 pm
Location: University of Colorado-Boulder

Recording stiffness in zerolength element

Post by sattar »

I tried the following command line to record the stiffness in the zerolength element. But it does not record anything. Could you tell me how I can record the stiffness of the zerolength element?

recorder Element -file Stiff_3000.out –time -ele 3000 stiff
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: Recording stiffness in zerolength element

Post by vesna »

Recorder you created looks good. Do you at least get the column with the time in it? If not, that means that your analysis did not go through. Check other recorders in your model to see if you are getting any other outputs.
kampix01
Posts: 14
Joined: Thu Mar 15, 2012 10:04 pm
Location: University of Innsbruck

Re: Recording stiffness in zerolength element

Post by kampix01 »

I've exactly the same problem. If I want to record the stiffness in my zero length element with

recorder Element -file $result_fileTIME_springK -time -ele $SPRING_tag stiff;

I only got back the timesteps of my calculation.
If I leave the '-time' option beside, nothing is written to my outputfile. I've no clue what there could be wrong!
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: Recording stiffness in zerolength element

Post by vesna »

I've tested it myself and it did not work either. I looked at the source code and did not see that recorder option there so I removed it from the manual.
wuhaoshrek
Posts: 122
Joined: Tue Oct 28, 2008 4:01 am

Re: Recording stiffness in zerolength element

Post by wuhaoshrek »

vesna wrote:
> I've tested it myself and it did not work either. I looked at the source
> code and did not see that recorder option there so I removed it from the
> manual.

Hi vesna,

Could any option record the stress-strain of a fiber in a zerolength element, the zero length
element is assigned with a fiber section, with the zeroLengthSection element. In my model
it did not record anything either, but only time column.
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: Recording stiffness in zerolength element

Post by vesna »

Yes, you should be able to do that.
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