Analysis of nutritive composition of body wall in wild Apstichopus japonicus Selenka at Zhangzi Island;

Histological and histochemical examination of body wall of sea cucumber Apostichopus japonicus;

Extraction of collagen from body wall of Asterias amurensis;

The ultra structure of the integument of the malformed larvae and pupae were observed.

Research on geometric development method of integral panel skin surface;

Since the lap joint is a key part which greatly influences the fatigue life of aircraft structure,a two-stepped riveted lap joint in an integral panel structure is presented,and finite element analysis is performed for it.

Large integral panels are the main structure parts of the modern advanced civil airplanes.

Finite element simulation of stress and strain on the incremental bend forming technology of the integral wing-skin panel;

The research indicates that integral wing-skin panel with curvature shape can be made by the incremental bend forming technology,wing-skin keeps elastic distortion phase in the bend processing,both elastic distortion and plastic deformation happened in ribs,the rate of plastic distortion increase faster when the press distance reaches a value.

An integral wing panel is represented as feature sets,and the features are decomposed as information sets such as location,direction,geometric size,Boolean operation etc.

After the research on blank modeling and shot peening path design for integral wing panel, a new technology for rapid blank modeling based feature mapping and an algorithm for complex Integral Wing Panel s shot peening path design are presented in this thesis.