Analysis of Potential Shock Damage for Reed Contact Switch of Naval Ships' Electrical Equipment
-
摘要: 对处于闭合状态的簧片式触点开关进行了接触模态分析,确定固有频率和振型;保证最大加速度响应、伪速度响应、最大位移响应中两者不变,设计不同正负双波时域冲击载荷,对簧片式触点开关进行有限元冲击模拟。动、静触头之间的接触力以及簧片根部应力在自由振动时呈现出周期性,接近一阶固有频率;最大加速度响应只影响触头间的接触压力,对于簧片的根部应力不能产生影响;伪速度响应只影响簧片根部的应力,而不能影响触头间的接触压力;最大位移响应的改变不能影响簧片的抗冲击性能。Abstract: The contact modes of closed switch are firstly analyzed to get the natural frequency and modes. The different positive and negative dual wave loads are designed to ensure the two variables of maximum pseudo velocity, acceleration and displacement be equal by using the finite element software to simulate the shock impact of the reed contact switch. The contact pressure and the root stress of the reed switch vibrate periodicity closed to the first-order natural frequency when the shocking stopped; the maximum acceleration response just affects the contact pressure but has no effects on root stress; the pseudo velocity response just affects the root stress but has no effects on contact pressure; the maximum displacement response has no effects on contact pressure or root stress.
-
Key words:
- contact switch /
- positive and negative dual wave /
- finite element metho /
- contact pressure /
- root stress
-
[1] 王鸿翔.机械设计手册[M].北京:化学工业出版社,2004 Wang H X. Machinerys handbook[M]. Beijing: Chemical Industry Press, 2004 (in Chinese) [2] 肖玲,张国贤.采用ANSYS对片弹簧式触点开关受力状况的研究[J].现代制造工程,2011,(1):119-122,58 Xiao L, Zhang G X. The strength analysis of contact leaf spring by ANSYS[J]. Modern Manufacturing Engineering, 2011,(1):119-122,58 (in Chinese) [3] Xiong J, He J J, Zang C Y. Dynamic analysis of contact bounce of aerospace relay based on finite difference method[J]. Chinese Journal of Aeronautics, 2009,22(3):262-267 [4] Triantis D, Vallianatos F, Stavrakas I, et al. Relaxation phenomena of electrical signal emissions from rock following application of abrupt mechanical stress[J]. Annals of Geophysics, 2012,55(1):207-212 [5] Gollee R, Gerlach G. An FEM-based method for analysis of the dynamic behavior of AC contactors[J]. IEEE Transactions on Magnetics, 2000,36(4):1337-1340 [6] 彭长江.基于ANSYS电磁继电器触簧系统的随机振动分析[J].电源技术应用,2014,(3):210,224 Peng C J. Analysis of random vibration electromagnetic relay contact spring system based on ANSYS[J]. Power Supply Technologies and Applications, 2014,(3):210,224 (in Chinese) [7] 孙宏杰,曹云东,刘炜,等.铁路信号继电器触簧系统振动特性的仿真研究[J].电器与能效管理技术,2015,(6):15-19 Sun H J, Cao Y D, Liu W, et al. Vibration characteristic simulation study of contact spring system for railway signal relay[J]. Electrical & Energy Management Technology, 2015,(6):15-19 (in Chinese) [8] 江国和,沈荣瀛,华宏星,等.舰船机械设备冲击隔离技术研究进展[J].船舶力学,2006,10(1):135-144 Jiang G H, Shen R Y, Hua H X, et al. Advances in study on shock isolation of naval equipment[J]. Journal of Ship Mechanics, 2006,10(1):135-144 (in Chinese) [9] 宫国田,金辉,张姝红,等.国外舰艇抗水下爆炸研究进展[J].兵工学报,2010,31(S1):293-298 Gong G T, Jin H, Zhang S H, et al. The advance of anti-explosion capability of foreign naval ships[J]. Acta Armamentarii, 2010,31(S1):293-298 (in Chinese) [10] 汪玉.实船水下爆炸冲击试验及防护技术[M].北京:国防工业出版社,2010 Wang Y. Naval ship anti-shock technology in underwater explosion[M]. Beijing: National Defence Industry Press, 2010 (in Chinese) [11] Bathe K J. Finite element procedures in engineering analysis[M]. New Jersey: Prentice-Hall, 1982 [12] GJB 150.18-86 军用设备环境试验方法-冲击试验[S]. 1986 GJB 150.18-86 Environment test methods military equipments-shock test[S]. 1986 (in Chinese) [13] Daniel W J T. The subcycled Newmark algorithm[J]. Computational Mechanics, 1997,20(3):272-281 [14] de Borst R, Crisfield M A, Remmers J J C, et al. Non-linear finite element analysis of solids and structures[M]. 2nd ed. West Sussex: John Wiley & Sons Ltd., 2012 [15] Bathe K J, Baig M M I. On a composite implicit time integration procedure for nonlinear dynamics[J]. Computers & Structures, 2005,83(31-32):2513-2524
点击查看大图
计量
- 文章访问数: 133
- HTML全文浏览量: 24
- PDF下载量: 8
- 被引次数: 0