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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Nodal acceleration from transient structural apdl › Reply To: Nodal acceleration from transient structural apdl

March 27, 2024 at 5:36 pm
Avnish Pandey
Ansys Employee

Hi,

To define the integration time step (ITS) you will need to find out the highest frequency in the spectrum of the impact load. You can obtain it from the FFT of the signal and modal analysis of the structure. As a standard practice, the max. time step should be less than 1/20th of the period of the highest frequency of interest.

Check these links for more information:

/forum/forums/topic/auto-time-stepping-in-transient-structure/

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https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/ans_str/Hlp_G_STR5_12.html

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/ans_str/Hlp_G_STR5_5.html

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