For the sake of enhancing the dissipation efficiency of landing energy stored in the fuselage of flexible airplane and the passing through performance of the airplane running over the being bombed but rush-repaired runway,a kind of dual air-chambered oil-pneumatic styled intelligent bumper for controlling oil-hole damping force was designed.

Landing dynamic simulation and landing-gear optimization design are used to improve the landing-gear design for a flexible airplane.

Landing dynamic simulation of a flexible airplane is evaluated by using velocity-squared damping, poly-tropic air-compression spring, exponential tire force-deflection, and an equivalent three-mass system.

For the case in which the rigid mode and the first n modes of a flexible airplane are considered,the body of the airplane is defined as a multi-mass equivalent system and the calculation formulas of the parameters of the system are derived,which presents a model for testing/verifying landing impact load,landing work etc.

Landing dynamic simulations are evaluated for a flexible airplane with the conventional type of oleo-pneumatic main landing gear.

Structural and topological optimization approaches:designing monolithic compliant mechanisms;

Firstly, the concepts and characteristics of compliant mechanisms are introduced.

A novel strategy for size and shape optimization of compliant mechanisms was presented and implemented.

Topology optimization design for compliant mechanisms based on nodal density;

Topology Optimization of Structure and Compliant Mechanisms;

Research on structural designing methodology of concentrated compliance flexible mechanism using pseudo-bar-group method;

Identification model of flexible mechanism dynamic response based on RBF neural network;

Analysis on degree of freedom of flexible components and flexible mechanisms