Robot Structural Analysis General Discussion

Robot Structural Analysis General Discussion

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Contributor
29 Posts
Post 1 of 32

time history analysis

480 Views, 31 Replies
03-20-2013 02:49 AM

Bonjour,

je veux faire une analyse temporelle d'une structure non lineaire (passerelle haubanée).

J'ai mon cas 1 poids propre, que j'ai transformé en masse

cas 2 analyse modale

cas 3 le cas de charge de piéton

cas 4 analyse temporelle, methode de Newmark, j'ai défini ma fonction et mon cas 3

 

je n'obtiens pas les bonnes valeurs d'accélération.

quand j'affiche les réactions, j'obtiens presque les memes valeurs dans le cas 1 et 3

est ce que le problème vient de là??

merci d'avance

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Post 2 of 32

Re: time history analysis

03-20-2013 02:53 AM in reply to: dziub7

PLease send us the file.



Rafal Gaweda
Contributor
29 Posts
Post 3 of 32

Re: time history analysis

03-20-2013 03:06 AM in reply to: Rafal.Gaweda

what is the best way to send the file?

Contributor
29 Posts
Post 4 of 32

Re: time history analysis

03-20-2013 03:09 AM in reply to: dziub7
Contributor
29 Posts
Post 5 of 32

Re: time history analysis

03-20-2013 08:40 AM in reply to: dziub7

anyone???

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Post 6 of 32

Re: time history analysis

03-20-2013 09:01 AM in reply to: dziub7

be patient. We are cheking it.



Rafal Gaweda
Autodesk Support
6941 Posts
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1301 Solutions
Post 7 of 32

Re: time history analysis

03-21-2013 03:06 AM in reply to: Rafal.Gaweda

All cases must be pdelta.

NOTE - now calculations will last at least ~1,5h with THA NON tolerance 0.001, with tol 0.0001 - 2,5h

 

thanon.jpg

 

File with results: https://www.filemail.com/dl.aspx?id=HHLXBXCYWHRISCC



Rafal Gaweda
Contributor
29 Posts
Post 8 of 32

Re: time history analysis

03-21-2013 09:30 AM in reply to: Rafal.Gaweda

Hi RG,

thank you to take time to look into the model!

I think there is something wrong with the results: because if you look the loads i put

in case 3 "pedestrians" : 12.7N/ml, is almost nothing and the max results of acceleration is

8m/s² !! is there something wrong with the loads taking into account in load case 3? 

Contributor
29 Posts
Post 9 of 32

Re: time history analysis

03-25-2013 06:59 AM in reply to: dziub7

hi there,

do you have an idea about the question?

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Post 10 of 32

Re: time history analysis

03-25-2013 07:02 AM in reply to: dziub7

Tomorrow.



Rafal Gaweda
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