Simulation Analysis Of Dynamic Behavior For Airplane Landing Gear

At present we still adopt traditional method about the design and analysis of landing gear in China. We seldom see the simulation analysis reports of dynamic behavior of landing gear, say nothing of exploiting design platform of digital model of landing gear based on simulation software.In the paper material post landing gear structure is developed by applying dynamics basic theory. Dynamic simulation models of landing and taxiing of undercarriage and full-aircraft are established, in which influence of parameter of sorts is as possibly considered as we can. The main contents are included as followings:A model for dynamic analysis of post landing gear is established based on ADAMS. By the model the simulation analysis and parameter optimization can be conducted in terms of the software. The output curves and results have good correspondence to those from drop tests. Parameter optimization has good reference worthiness. It proves reliable for ADAMS software to perform digital simulating analysis.A full-aircraft assembly model based on ADAMS/Aircraft is defined, which includes wheel subsystems, landing-gear subsystems, a brake subsystem, and an airframe subsystem, and performs full-aircraft landing simulation analyses (including aircraft landing and drop). It proves not only highly reliable for ADAMS/Aircraft to perform landing-gear or full-aircraft simulation analyses, but also get twice the result with half the effort.Another full-aircraft simulation analysis model based on ADAMS/Aircraft is established, and performs full-aircraft taxiing simulation analysis. Influence of behavior parameters of sorts is carefully considered such as tire stiffness,friction coefficient with ground> runway profile.