摘要
折叠翼的展开性能关系着箱式发射无人机在发射后能否正常的飞行。以箱式发射无人机折叠翼为研究对象,根据其结构及工作原理,建立展开机构运动的微分方程;利用LMS Virtual.Lab建立展开动力学模型,分析机翼在不同扭簧刚度下的展开过程,得到机翼展开角度、角速度、角加速度和冲击载荷曲线;利用橡胶进行减振并探讨阻尼系数对减振效果的影响。结果表明:机翼能够在设计要求的时间内展开到位并锁定,加入橡胶后的冲击载荷降低了46.7%,随着橡胶阻尼系数的增加,振动逐渐减弱。
The deployment performance of folding wing has significant relations to the normal flight of box- type launch UAV. According to the structure and working principles of a UAV folding wing,it establishes the mathematical model,builds the unfolding dynamic model as well with LMS Virtual. Lab software,analyzes the dynamic performance of unfold process in different torque spring stiffness. The simulation obtains the different cases of wing unfolding angles,unfolding angular velocity,unfolding angular acceleration and impact loads. It uses the rubber components to reduce vibration and discusses the effects of damping coefficient on impact load. The results show that the folding wing is capable of unfolding and locking within the time of design requirements,the impact load decreases by 46. 7% after the application of rubber and the vibration reduces with the increase of rubber damping coefficient.
出处
《机械设计与制造工程》
2015年第2期12-16,共5页
Machine Design and Manufacturing Engineering
基金
国家自然科学基金资助项目(51305198)
教育部博士点基金资助项目(20123218120003)
关键词
折叠翼
展开
LMS
动力学仿真
减振
folding wing
deployment
LMS
dynamic simulation
shock absorption
