摘要
折叠翼的锁紧机构和到位碰撞缓冲特性是折叠翼设计的重要技术指标,为了研究折叠弹翼锁紧机构展开到位瞬时的碰撞问题,基于刚柔耦合动力学理论,采用LS-DYNA建立折叠翼的刚柔耦合动力学模型,根据构件的相对运动关系建立运动副和接触关系,对折叠弹翼展开到位时的局部接触碰撞动力学过程进行数值模拟,刚体运动学仿真结果到位角速度50rad/s作为柔体动力学仿真输入,分析折叠翼展开到位的碰撞特性。结果表明:折叠翼锥形孔两侧的应力水平在300~400MPa,从而为折叠翼机构的设计提供指导。
Spring locking mechanismand impact characteristics for folding-wing are important specifications of folding-wing designing.In order to study the collision problem of the folded wing locking mechanism in the instantaneous position,the flex-rigid coupling dynamics model is built using the software LS-DYNA based on the flex-rigid coupling dynamics theory.According to the relative motion relation of the components,the problem of transient collisions when folding-wing deploying to expected position is analyzed.The in place angular velocity of 50 rad/s is obtained by the rigid body kinematics simulation and used as the input for the flexible body dynamic simulation.The local contact collision deformation is considered and the collision characteristics of the folded wing are analyzed,the curves of kinetic energy and angular velocity during collision are obtained,the stress level of the folded wing is about 300~400 MPa.The analysis result provides guidance for the design of the folded wing mechanism.
作者
朱利媛
陈雷
孙英超
林海彬
吴华晴
Zhu Liyuan;Chen Lei;Sun Yingchao;Lin Haibin;Wu Huaqing(660 Design Institute,Jiangxi Hongdu Aviation Industry Group Co.,Ltd.,Nanchang 330024,China;College of Aerospace and Civil AVIC Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《航空工程进展》
CSCD
2019年第A01期72-75,共4页
Advances in Aeronautical Science and Engineering
关键词
折叠翼
碰撞
动力学仿真
刚柔耦合
folding-wing
impact
dynamics simulation
flex-rigid coupling
