Different beam cross-sections can be modeled using OptiStruct by specifying the orientation and the cross-section of the
beams.
This option is available under Aerospace > Beams > Beams from Lines and the orientation can be specified under the same. Figure 1 shows the stringers and the frames
that were created using this technique. Figure 1. 1D Element Modeling in the Aerospace Module
Fastener Modeling
Fasteners are one of the most important components of an aircraft structure. These
are often considered the weak points in an aircraft and; therefore, it necessary to
analyze them at critical loading conditions. OptiStruct
facilitates the modeling of connections between components of a structure.
CFAST can be used to define a fastener with material
orientation connecting two shell surfaces. The workflow to create fasteners is: Figure 2. Fastener Setup in HyperMesh
CFAST modeling is available under Aerospace > Connections > Fastener Setup. By selecting the parameters as per requirements,
CFAST can be modeled and it automatically creates the
PFAST property and assigns it to the respective
CBUSH elements. Figure 3 shows a fastener that was modeled
using CFAST. Figure 3. CFAST Fastener Modeling in the Aerospace Module Figure 4. Detailed View of CFAST Connected between Multiple
Component
