| Due to the limitation of the launch site,the traditional vehicle mounted missile can only be launched on the preset thickened concrete launch site,which limits the mobility of the vehicle mounted missile and cannot give full play to the advantages of the vehicle mounted missile.At present,our country has mastered the technology of launch without support,which makes the vehicle borne missile get rid of the limitation of preset field,and can stop at any time in the running state and launch the road as the field.Therefore,it is necessary to analyze the safety and stability of the road as the launching field.This paper focuses on the analysis of the response of highway yard in the impact stage of launcher and the propping up stage of hydraulic outrigger,and summarizes three different launching conditions,which are low specific pressure field impact,stable propping up of hydraulic outrigger,and the ground launch yard impact considering the response of outrigger.The main research achievements of this paper include:(1)This paper summarizes the structure and material database of different grade highways in different regions of China.According to different highway structures,three-dimensional finite element models of highway launch site are established by using layered elastic system theory and elastic half space theory.(2)Based on the finite element software ABAQUS,the impact response of different grades of highway under different working conditions is calculated,and the maximum load of highway is analyzed.(3)Based on the theory of damage mechanics and fracture mechanics,the damage and plastic deformation of different types of pavement under impact effect are studied,and the influence of water,temperature,cracks and other complex environment is comprehensively considered.(4)Through the summary and analysis of pavement subsidence displacement and highway damage,it provides decision-making basis for the selection of highway site. |
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