Poissons Ratio |
 
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Poissons Ratio |
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This section describes how Poisson’s ratio effects are modelled.
Poisson’s ratio is defined as the ratio of transverse strain (perpendicular to the applied load), to axial strain (in the direction of the applied load). In Flexcom, changes due to Poisson’s ratio and internal and external pressure are calculated using the following relationship:
where 
is the axial load due to Poisson’s ratio effects, 
and 
are external the internal pressures respectively, 
and 
are the corresponding cross sectional areas of the element, and is the specified Poisson’s ratio. Note also that Poisson’s ratio may be specified on an element set-by-set basis in Flexcom, or simply specified as a global parameter applicable to all elements in the model.
•*GEOMETRIC SETS is used to assign geometric properties to element sets.
•*POISSON is used to include Poisson's ratio effects in an analysis.
If you would like to see an example of how this keyword is used in practice, refer to C03 - Turret Disconnect.