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Ryan Latture 2015-11-12 18:32:21 -08:00
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@ -29,12 +29,12 @@ The latter of which ties to nodes together via a linear springs between all tran
The `fea::Options` struct can be used to request results of the analysis be written to disk as well as modify various aspect of the analysis. The `fea::Options` struct can be used to request results of the analysis be written to disk as well as modify various aspect of the analysis.
#### Forming the job #### #### Forming the job ####
The job defines the nodal coordinates in \f$(x, y, z)\f$ space, The job defines the nodal coordinates in ``(x, y, z)`` space,
the nodes that are connected to form beam elements, and the elemental properties. the nodes that are connected to form beam elements, and the elemental properties.
The nodal coordinates are formed as a vector of `fea::Node`'s where each node simply contains the \f$(x, y, z)\f$ coordinates of the point. The nodal coordinates are formed as a vector of `fea::Node`'s where each node simply contains the `(x, y, z)` coordinates of the point.
An element contains the 2 nodal indices that are connected to form the element as well as the associated properties of the element. An element contains the 2 nodal indices that are connected to form the element as well as the associated properties of the element.
The properties must define the extensional stiffness, \f$EA\f$, bending stiffness parallel to the local z-axis \f$EI_{z}\f$, The properties must define the extensional stiffness, `EA`, bending stiffness parallel to the local z-axis `EIz`,
bending stiffness parallel to the local y-axis\f$EI_{y}\f$, the torsional stiffness, \f$GJ\f$, and a vector pointing along the beam elements local y-axis. bending stiffness parallel to the local y-axis `EIy`, the torsional stiffness, `GJ`, and a vector pointing along the beam elements local y-axis.
An example forming a simple job with a single element is shown below. An example forming a simple job with a single element is shown below.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp} ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}