bug outputs delta t

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dgale
Posts: 55
Joined: Fri Jan 15, 2016 4:01 am
Location: UPM

bug outputs delta t

Post by dgale » Thu Feb 08, 2018 10:25 am

Hello everyone,
Please look at these outputs for displacements, look at first column "time":

0 0.38805213 -0.01355947 -0.28633711 0.00078968616 -0.00060116829 8.0562438e-005
0.005 0.38877903 -0.013434167 -0.28554026 0.00078027136 -0.00059185581 7.9535598e-005
0.01 0.38956691 -0.013757701 -0.28539001 0.00077741455 -0.00058610778 7.9228774e-005
0.015 0.38979096 -0.013886809 -0.28582653 0.00077766012 -0.00058667605 7.9469461e-005
0.02 0.38979159 -0.013781887 -0.28605072 0.00077830915 -0.00058773051 7.9496851e-005 <---------- up to here delta t=0.005
0.0275 0.38955198 -0.013477022 -0.28577781 0.00078189511 -0.00058667064 8.0033511e-005 <----------change of delta t to 0.0075
0.0325 0.38929109 -0.013311956 -0.28564141 0.00078307171 -0.00058613147 8.0458064e-005 <--------- change again of delta t to 0.005
0.0375 0.38919005 -0.013307949 -0.28558876 0.00078299008 -0.00058623816 8.0749423e-005
0.0425 0.38938556 -0.013523167 -0.2857974 0.00078244242 -0.00058708128 8.0909815e-005
0.0475 0.38986046 -0.013949446 -0.28624762 0.00078219843 -0.00058853775 8.0999355e-005
0.0525 0.39055098 -0.014501867 -0.28670403 0.00078236867 -0.00059012125 8.1073645e-005
0.0575 0.39139527 -0.015061734 -0.28699773 0.00078253295 -0.00059132966 8.1156238e-005
0.0625 0.39235532 -0.01553079 -0.28712307 0.00078251415 -0.00059194369 8.1270614e-005
0.0675 0.39348029 -0.015806286 -0.28698794 0.00078146249 -0.00059193321 8.1382598e-005


What's going on? Why did delta t change?

I used the following sentence to call outputs:

recorder Node -file Outputs/Displacement/disp895.out -precision $nSD -time -closeOnWrite -dT $dtR -node 895 -dof 1 2 3 4 5 6 disp;

fmk
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Re: bug outputs delta t

Post by fmk » Tue Feb 13, 2018 4:20 pm

roundoff .. set dt in the recorder command slightly smaller than dtR, e.g. [expr $dtR-0.00000001]

dgale
Posts: 55
Joined: Fri Jan 15, 2016 4:01 am
Location: UPM

Re: bug outputs delta t

Post by dgale » Fri Mar 02, 2018 2:04 am

Thank you very much, it worked!!

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