Papers by Author: Li Hao Yuan

Abstract: Aiming at the maneuvering training character of hovercraft, a visual simulation system is developed based on EPX-500 IG(Image Generator), and core-technology research is made, include the production of high revolution land database, simulation of sea waves and the detection of HOT(S) (Height of Terrain(Sea)) both on continent and sea surface. Consequentially gains the vivid simulation of hovercraft’s navigation scene, and the capability of real-time adjusting gesture of hovercraft in the motion simulation system module according to the response of the terrain.

Abstract: Based on the strain energy density theory, the connotation of tangent modulus theory is developed. At critical equilibrium state, a dimensionless number Φ_t of a structure under pressure is introduced in this paper. Derived from the stress-strain curve of material, a four-parameter formula that contains Φ_t is established. This formula is referred to as the function of strength utilization ratio that may be used for calculating the inelastic buckling of deep submersible pressure hull.Φ_t can be used to express the effect of initial imperfection of the shell and to guide the experimental study. Compared with the data from some experiments or other methods, it has demonstrated that the method given by this paper is more precise and convenient for predicting the failure of thin and moderately thick shell under pressure.