Dynamic Response Characteristic Analysis And Parameterized Modeling Of Launcher

The launcher will be affected by various kinds of impact during storage,transportation and missile launching.These shocks often produce local and dynamic amplification effects through the transmission of structures,it further affects the launching performance of the missile launching system,and more serious is the damage to the missile launching system.Therefore,it is very important to establish an effective launching device model and to study the dynamic response characteristics of the launcher.Based on this research background,combined with the application requirements of the three-dimensional parametric model of launch system,the dynamic response characteristics and parametric modeling of launch system are studied.First of all,the paper describes the development status of the launcher at home and abroad,the research of the vibration damping device for launch system and the structural dynamic response calculation and analysis,and briefly introduces the basic knowledge of structural dynamics theory and simulation calculation method.Secondly,starting from the requirement of building dynamic response analysis of launch system,the response characteristics and modeling method of non-metal prebent column vibration damping structure are studied,and an equivalent modeling method based on material constitutive and experimental data is proposed respectively.Then,based on the similarity of dynamic response,namely the modal similarity,a method of establishing the three-dimensional equivalent model of complex projectile is proposed by using the optimization algorithm,and the equivalent beam-shell model is established according to the structural characteristics of the launcher.Finally,the parameterized design and assembly of the launching device model containing the projectile body,the cylinder and the vibration damping structure are carried out;and the dynamic response characteristics of the launcher are calculated and analyzed;combined with the engineering application requirements,a parametric modeling and analysis platform,which can be applied in the engineering analysis platform,provide the basis for the practical application.