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capture hysteresis loop using Iwan or masing model

capture hysteresis loop using Iwan or masing model

capture hysteresis loop using Iwan or masing model

(OP)
Hi,
I am trying to correlate the junker test in FEA with hand calculation. Junker test is a bolted joint subjected to transverse harmonic load would result in reduction of preload of the bolt.
Currently I am able to simulate it in ANSYS. And I am getting a hysteresis loop when I plot transverse load vs transverse displacement which is in line with what papers say.
In order to capture this hysteresis loop I need to use Iwan or masing model. Assuming I can get the constants of iwan model I am not able to create hysteresis loop.

Please refer the paper for more details
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000100115

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