Study On The Dynamic Response Of The Launching Equipment Under Strong Impact

The IT-based warfare requires that the mode of missile launching should be transformed into the vehicle subgrade mobile launching mode with good mobility and high concealment.It requires the missile launching system obtains a strong field adaptability and can stop to launch at any time.However,not all roads can bear the heavy loads for missile launching,and the launching site may occur settlement and deformation in a large scale.This will not only influence the stability and security of launching system,but also reduce the launching accuracy of missile.Therefore,in order to improve the stability of missile,attentions should be paid to studying dynamic response of the launching site.This dissertation conducts a study on dynamic response characteristics of the launching site under strong impact based on a certain typical cold launching equipment.This dissertation comprehensively applies the related theories and method and achieves a certain research results as follows:(1)According to the finite element method,damage mechanics and thin plate bending theory,and on the basis of studying structural characteristics of 30 typical highways,a preliminary dynamical model of launching field is established.The author also finds two factors that have a great influence on the dynamic response of pavement and their influence rules.(2)The mechanical characteristics of the typical sections of the northwestern region and the typical sections of North China are investigated.Through the experiment,the law of modulus and water content,and the relationship between the modulus and the consistency are found out.(3)The cement concrete pavement model is constructed by using the improved Popovics formula and the interlayer interface mathematical model based on the Cohesive unit.The settlement and damage of the road base in the unsupported launching process of a certain type of missile is also studied.A model of asphalt concrete pavement is set up.The settlement analysis of the front leg of a certain type of missile and the field flat of the launching area is carried out.