Aeroelastic analysis is a capability that enables the simulation of structural models in the presence of an airstream. NX Nastran calculates the loads and damping characteristics from an aerodynamic model and applies them to a structural model. Aeroelasticity is applicable in the design of airplanes, helicopters, missiles, high-speed trains and civil engineering applications including suspensions bridges, tall buildings, chimneys and power lines. Femap version 10.3 extends the scope of simulation with the introduction of user interface support for NX Nastran aeroelasticity, which allows aeroelastic model preparation for statics and flutter analyses.
With static aeroelasticity, structural stresses can be obtained due to aerodynamic loading and control systems. With flutter analysis, you can simulate the interaction of aerodynamic forces with natural frequencies that produce potentially destructive rapid period motion. For the aerodynamic model, basic components such as panel and body components are defined, as well as splines that interpolate between aerodynamic and structural grid points. Specify basic flight characteristics within Femap including angle of attack, turn and pitch rates etc., as well as control surfaces and body-to- panel interference factors.
Aeroelasticity is an add-on module within the Femap with NX Nastran product line.