Consider The Contact Problem Of A Missile Static And Dynamic Characteristics Analysis

The contact problem is widely existed in many structures, which draws the attentions from more and more engineers and technological researchers. The finite element analysis method based on contact problem is a numerical algorithm used for solving contact problem of connection interface, which is developed from the general FEM. This method is a combination of elasticity theory and FEM, also it is an important aspect of computational structure mechanics.First, the characteristic of the contact problem is briefly introduced in this thesis. Contact parameter contact state and contact condition, which are needed in contact problem research, are studied in detail. Theoretical results of some typical contact problems are derived in this thesis. Then on the basis of FEM, some algorithms such as void-rod element method super element method and mix FEM are presented simply. And then two kinds of contact problem of connection structure including flanged connection and tenon connection are discussed in brief. Some examples are given to testify the validity of the method. Finally, on the premise of contact problem, static stress analysis and dynamic analysis of a certain missile's body-and-wings are given to verify the feasibility of this software.