非理想约束的舰载柔性发射系统动力学建模与仿真
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摘要
对舰载导弹发射系统的动基座、变结构、弹体柔性及工艺配合间隙等问题进行分析。基于Craig-Bampton模态坐标法推导得到考虑接触的柔性弹体动力学方程,并借助商用软件联合建立非理想约束的舰载柔性发射系统动力学仿真模型,计算得到弹体出箱扰动、自由度突变构件运动轨迹及接触碰撞力等数据。结果表明舰载导弹发射系统的动基座、工艺间隙等因素对动力学的影响不能忽略,工程研制中应给予充分的关注。
This paper mainly discusses the problems of moving base,variable structure,missile's flexibility and manufacturing clearance in ship-borne launching system.Based on the Craig-Bampton mode coordinate method,the dynamics equation of flexible missile is achieved,and the simulation model is obtained by software combining.Data of missile excursion,rudder track,impact force and so on are gotten through computer calculating.The result indicates that the factors of moving base and manufacturing clearance in ship-borne launching system can't be neglected during dynamics analysis,and must be paid enough attention.
This paper mainly discusses the problems of moving base,variable structure,missile's flexibility and manufacturing clearance in ship-borne launching system.Based on the Craig-Bampton mode coordinate method,the dynamics equation of flexible missile is achieved,and the simulation model is obtained by software combining.Data of missile excursion,rudder track,impact force and so on are gotten through computer calculating.The result indicates that the factors of moving base and manufacturing clearance in ship-borne launching system can't be neglected during dynamics analysis,and must be paid enough attention.
引文
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[2]张延教.高等动力学[M].南京:南京理工大学出版社,2003.
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[2]张延教.高等动力学[M].南京:南京理工大学出版社,2003.
[3]洪嘉振,倪纯双.变拓扑多体系统动力学的全局仿真[J].力学学报,1996,28(5):633-637.
[4]邱吉宝,等.计算结构动力学[M].合肥:中国科学技术大学出版社,2009.
[5]赵经文,等.结构有限元分析[M].北京:科学出版社,2001.
[6]董富祥,洪嘉振.多体系统动力学碰撞问题研究综述[J].力学进展.2009,3(39):352-359.
[7]Hertz H.On the contact of solids—on the contact of rigid elastic solids andon hardness[C].Miscellaneous papers(Translated by DE Jones and GASchott),Macmillan,London,1896:146-183.
[8]Hunt K H,Crossley F R.Coefficient of restitution interpreted as dampingin vibro impact[J].Journal of Applied Mechanics,1975(7):440-445.