Analysis Of Stress And Deformation Of Conical Shell Acted By Steady Flow

From disciplines, the problem of fluid-solid interaction refers fluid mechanics, solid mechanics, dynamics, computational mechanics etc. It covers different realms, for example: aviation, spaceflight, shipping, oceanics, mechanism, nuclear-powered, bioengineering and so on, from engineering technology. The applied range of fluid-solid interaction is very extensive. Especially, with the request of the higher ratio of impulse in aviation and spaceflight project, the subject of fluid-solid interaction will be more prosperous.The kinematical and dynamic equations of fluid and solid interaction are educed by using combined Lagrangian - Eulerian method, and the criterion of classification is deduced. The result of potential flow around rigid taper without angles of attack, which is in the ideal fluid except the gravity, is presented by importing dipoles of continuous intensity. Then the series analytical solutions of stress and deformation of conical thin shell, which is acted by steady flow and supported by non-fluid, are obtained. The numerical simulation is implemented.First of all, the geometrically nonlinear governing equations of general shell, the governing equations of conical shell and the equations of fluid dynamics are introduced. The equations of fluid and solid interaction are founded by using combined Lagrangian - Eulerian method, the criterion of classification about fluid-solid interaction is discussed, and the meaning of interaction's simplicity is illuminated.Secondly, the problem of flow through the tape is resolved from the solution of integral equation angles. In virtue of singularity method in fluid mechanics, flow through the conical shell is simulated by importing dipole, and the foundation of progressional result is established.At last, according to the rule of fluid-solid interaction mechanics and axial symmetry, the interface's kinematical equation and dynamic equation can be reduced. The problem is disassembled as that of flow around rigid taper and that of excitation arose by deformation of elastic conical thin shell. Using dipole theory in singularity method, the result of potential flow around rigid taper without angles of attack, which is in the ideal fluid except the gravity, is presented by importing dipoles of continuous intensity. The series analytical solutions of stress and deformation of conical thin shell acted by steady flow, which is supported by non-fluid, are obtained. The creditability of the analytical result is validated through numerical simulation using ANSYS8.0 fluid-solid interaction module.