LS Dyna

LS Dyna

Transient analysis of a rocket using given boundary conditions

    • shantashreejena97


      I am trying to do transient analysis of a rocket by using mode superposition method and with the below boundary conditions. The effect of a load impulse (half-sine wave, duration 0.3 s, amplitude 100 kN) in the z-direction on the Merlin engine of the main rocket on the z-displacements in the payload is to be investigated. I need to plot the first 15 oscillation amplitudes of the impulse response and calculate the response frequency. But i couldn't able to figure out how to assign the load impulse as half sine wave with 100KN amplitude. Also would 0.3s be step end time or time step? Can anyone help me regarding this?

    • Keyur Kanade
      Ansys Employee

      This is regarding your recent post on the Ansys Learning Forum. 
      The technology raised in this topic may be restricted by the US International Traffic in Arms Regulation (ITAR), 22 CFR Parts 120-130, which controls the export and import of defense-related material and services, including export of sensitive technical data, or the US Export Administration Regulation (EAR), 15 CFR Parts 730-774, which controls dual use items. As such, we are removing your post and advice you to seek guidance using channels which comply with all applicable export-control regulations.
      Thank you.
      Best Regards,

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