Structure Desing And Dynamic Response Analysis Of Equipment Cabin Of Missile Launch Vehicle Body

Missile launch vehicle body equipment cabin is a new type of weapon equipment based on a new type of missile launcher,which is an important support equipment.A series of problems,such as cabin deformation,vehicle borne equipment damage and mudguard falling off,are studied after the old car body equipment cabin is equipped with troops.Based on the study of new structural design methods,combined with static finite element analysis,dynamic response analysis and experimental verification and other technical means to solve the common problems existing in the same type of weapons and equipment,combined with numerical simulation and theoretical analysis,this paper explores the structural failure of the same type of weapons and equipment,and grasps the key problems in the development process of the same type of equipment As follows:Based on the weight,load and load-bearing requirements of the missile launcher car body equipment cabin,the missile launcher car body equipment cabin is taken as the research object,and the finite element model of the missile launcher car body equipment cabin is established by adopting a new structural design scheme.It lays a foundation for the static finite element analysis,dynamic response analysis,test verification and related improvement of missile launch vehicle body equipment cabin.Master the finite element model simplification method of missile launch vehicle body equipment cabin,and carry out static finite element analysis,mainly analyze the stress and bearing condition of the equipment cabin when the missile launching vehicle is marching,and confirm whether the strength and stiffness of the structure design can meet the requirements.Based on the structural design scheme and static finite element a nalysis results of the missile launching vehicle body equipment cabin,feed back the improved design structure,optimize the design scheme,and carry out the test verification to obtain a more reasonable structural design scheme.In the military of missile launching vehicle,the vehicle body equipment cabin is easy to produce vibration due to the uneven road surface.The vibration will lead to equipment damage and car body structure damage.Therefore,the dynamic response analysis has important practical va lue in the development of weapon equipment.Through modal analysis of the equipment cabin of the car body,the natural frequencies of the first 10 orders and the vibration figure of the first 10 orders are obtained.According to the results of modal analys is,the structural parts with large deformation are analyzed.According to the actual operational environment of missile launcher,the random vibration test condition power spectral density(PSD)is taken as random input load to analyze the random vibration of the equipment cabin of missile launching vehicle.The stress and displacement distribution diagram of the structure random vibration are obtained.The maximum deformation node is analyzed,the design structure is improved and the design scheme is optimized The test results show that the reasonable structural design scheme is obtained.The research results can provide theoretical basis and technical means for the development of the same type of weapons and equipment.At the same time,it also has certain reference value for further research on qualitative transfer of vehicle body equipment cabin,improving the transfer pertinence of finite element model,and improving the power spectrum of dynamic response analysis.