How can I measure Poissons ratio of Auxetic structure using ANSYS workbench

hasanifte · July 12, 2018, 06:38

I am trying to measure Poisson ratio using ANSYS Workbench static structural module. Can I use the deformation values to measure Poissons ratio.

I worry that deformation value gives displacement/movement of structure rather than how much the structure has expanded in both directions?

Please help

karachun · July 12, 2018, 15:36

Yes. Poisson ratio is related to a whole structure.
Auxetic have negative Poisson ratio
https://en.wikipedia.org/wiki/Poisson%27s_ratio#Negative_Poisson's_ratio_materia ls
Make block of your structure, load it, measure deformations, calculate strains and poisson ratio.

July 12, 2018, 06:38	How can I measure Poissons ratio of Auxetic structure using ANSYS workbench	#1
hasanifte Member Hassan Iftekhar Join Date: Jan 2015 Posts: 40 Rep Power: 11	I am trying to measure Poisson ratio using ANSYS Workbench static structural module. Can I use the deformation values to measure Poissons ratio. I worry that deformation value gives displacement/movement of structure rather than how much the structure has expanded in both directions? Please help

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July 12, 2018, 15:36		#2
karachun Senior Member Join Date: Nov 2015 Posts: 244 Rep Power: 11	Yes. Poisson ratio is related to a whole structure. Auxetic have negative Poisson ratio https://en.wikipedia.org/wiki/Poisson%27s_ratio#Negative_Poisson's_ratio_materia ls Make block of your structure, load it, measure deformations, calculate strains and poisson ratio.