Static And Dynamic Characteristics And Dynamic Simulation For Three-axis Turntable

Three-axis turntables are the key equipments for ground semi-physical flight simulation of missiles and other flying devices and they are used to simulate rolling,yawing and pitching attitude changes space motion for aero craft. Hence they are widely used in the design of aeronautics,aerospace and national defenses.As a kind of high accuracy equipment, the dynamic characteristics of frameworks will directly influence the reliability of the dynamic simulation.It is very important to analyze the dynamic characteristics of the mechanical framework in the structural design.Based on the finite element analysis of theory, this thesis adopts the popular mechanical analysis method to analyze three-axis turntable. Based on the results of finite element analysis, some modified ideas are put forward.Firstly, the paper analyzes the mechanical structure characteristics of the turntable and simplifies structure of turntables's parts. The analytic computational model is created for structure analysis by using large general-purpose finite element analysis software-ANSYS 10.0 after analyzing the mechanical characters of turntable.Secondly, presents the static and dynamic calculation is made on the table. During the static analysis, the load is disposed as force to be added to the corresding nodes of the modal, and we obtain static deformation and stress of the turntable. During the dynamic analysis, loads are considered as mass, and they are added to the corresponding nodes of the modal. After computed, we gain the natural frequencies and vibration modal. The design sheme of turntable can be evaluated by solutions of the analysis.At last, this research theoretically analyzes dynamic coupling effect of simulator, simulates the dynamic coupling effect with ADAMS, and mainly simulating output torque of motor.