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COBEM 2021
26th International Congress of Mechanical Engineering
CO-EXISTING ATTRACTORS IN HIGH FREQUENCY JARRING
Submission Author:
Idin Nazzari , Scotland , United Kingdom
Co-Authors:
Idin Nazzari, Saleh Kehoul, Marcin Kapitaniak, Vahid Vaziri, Ekaterina Pavlovskaia, Marian Wiercigroch
Presenter: Idin Nazzari
doi://10.26678/ABCM.COBEM2021.COB2021-1702
Abstract
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 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.
Keywords
low-order modelling, Numerical analysis, Parametric analysis, jarring
