Dynamic Loads Analysis And Calculation Software Development Of Vertical Launching Missile

Dynamic loads calculation of the missile, which obtains axis force, shearing force and bending moment caused by external loads, is offered to set up the foundation for structure and strength design. The loads on missile include ground-winds, gust of wind, engine thrust, air resistance and so on. Larger dynamic loads are produced by short-cycle external interferential forces and moments for such a slender configuration and large flexibility of the missile.In this thesis, the simplified mechanical model is employed first, and the detailed calculation formulae of dynamic loads are deducted under different boundary conditions. The dynamic loads above consists of axial load in vertical launching, lateral load in container-type missile launching, lateral load in bare-type missile launching, gust load, ground-winds load and axial load in stage separation. Then the calculating software for dynamic loads on the missile is developed via assembling different loads calculation methods based on GUI platform of Matlab. There're four parts involved in it with friendly interactive interface: file function module, computed items chosen and data input module, computation module and result display module. An engineering example is studied lastly and the results validate the correctness and creditability of the simplified mechanical model, calculation methods of dynamic loads and the proposed software.