水下垂直发射的适配器建模及对内弹道的影响

Modeling of Adapter in Underwater Vertical Launch and Research on the Effects of Interior Ballistic

弹筒间适配器的力学性能直接影响导弹水下垂直发射的动力学特性,是内弹道控制的关键因素。目前,多数研究都简化了适配器受力变形特征的表达,不能体现适配器的非线性力学特性,因此建立的理论模型已具有一定的误差。考虑了实际适配器材料的超弹性和应力-应变滞回特性,建立了一种新的弹筒间适配器动力学模型。结果表明,该模型能够更为准确地描述实际适配器在导弹发射过程中的减振能力,并反映出通过优化适配器的结构能够解决为减小系统振动幅度提高自身刚度带来振动频率增加的问题。

The mechanical property of the adapter between missile and tube directly affects the dynamic characteristics of the underwater missile vertical launching process,and it is the key factor for the interior ballistic control. Currently,most studies simplified the representation of adapter deformation characteristics and could not reflect its nonlinear mechanical property. Therefore,there are certain errors in the theoretical model. By considering the hyper elasticity and hysteresis of stress-strain curves of the actual adapter material,a new method for modeling the adapter is proposed. The result shows that damping capacity of the actual adapter can be represented accurately by this new model and the problem of the adapter＇s vibration frequency increase when reducing amplitude by increasing the adapter stiffness can be solved by optimizing the structure of adapters.