Apply load with offset

Tim S.
Tim S. Altair Community Member
edited December 2020 in Community Q&A

Hi all,

i have lumbar spine model where i would like to apply a torque. The simulation time is 10ms and i want to apply the torque after 4ms. I have created the curve which reflects this correctly (see below, left column is the time domain, right column is the torque). However, when i look at the simulation results, it seems that the torque is applied instantly at 0ms. Does anybody know, what could be the issue here?

Torque Curve:

0.0,0.0
0.4091,0.0
0.4122,-14.3678
0.4154,-28.7356
0.4185,-43.1034
0.4216,-57.4713
0.4248,-71.8391
0.4279,-86.2069
0.431,-100.5747
0.4342,-114.9425
0.4373,-129.3103
0.4404,-143.6782
0.4436,-158.046
0.4467,-172.4138
0.4498,-186.7816
0.453,-201.1494
0.4561,-215.5172
0.4592,-229.8851
0.4624,-244.2529
0.4655,-258.6207
0.4687,-272.9885
0.4718,-287.3563
0.4749,-301.7241
0.4781,-316.092
0.4812,-330.4598
0.4843,-344.8276
0.4875,-359.1954
0.4906,-373.5632
0.4937,-387.931
0.4969,-402.2989
0.5,-416.6667
1.0,-7500.0

 

Thanks a lot!

Cheers, Tim

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Answers

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited December 2020

    are you able to share your .out files (both of them)?

     

    This should work nicely.

  • Tim S.
    Tim S. Altair Community Member
    edited December 2020

    Hi Adriano,

    many thanks for your reply.  I was able to fix the issue in the meantime by applying a sensor with a time delay to the torque load collector. I had to scale the torque curve to 6ms, though.

     

    Have a good one.

    Tim

     

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