Co-existing attractors in high frequency jarring

Research output: Contribution to conferenceUnpublished paperpeer-review


Low dimensional models of a typical multiple impact jarring tool are developed and studied to understand the effect of design and operational parameters on the tool’s performance. These simple models comprised of lump masses, springs and viscous dampers, can mimic the tool main function of generating of high amplitude impact forces from the energy stored in the pre-compressed spring. The magnitude and frequency of these impacts are controlled by the overpull and cam mechanisms respectively. The obtained numerical simulation results in form of bifurcation diagrams and basin of attractions, suggest that the system can exhibit co-exiting attractors, which can be explored to enhance the jarring tool performance by generating preferable impact force patterns
Original languageEnglish
Publication statusPublished - 18 Aug 2021
EventCOBEM 2021: 26th International Congress of Mechanical Engineering - Virtual Event
Duration: 22 Nov 202126 Nov 2021
Conference number: 26


ConferenceCOBEM 2021
Internet address


  • jarring
  • low-order modelling
  • parametric analysis
  • numerical analysis


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