Effect of Friction on Arming Motion of Fuze Setback Arming Pin

doi:10.12382/bgxb.2022.0010

Abstract

Abstract:

To optimize the mechanism of a single-degree-of-freedom linear-motion setback arming device of a fuze, the effect of the spring preload on the dynamic response characteristics of the inertial unit under different friction conditions was studied. The rigid body dynamics theory and ADAMS rigid body dynamics simulation software were used to study the effect of friction which exists due to the preload of a spring on the locked component on the dynamic response characteristics of the setback arming pin during launch and drop. Through theoretical calculations, the displacement response and velocity response of the setback arming pin under a variety of impact overloads were obtained. The results showed that the frictional retardation effect of the locked component on the setback arming pin contributes to the improvement of the drop safety, and that its effect on the arming performance of the setback arming device during launch is limited. By optimizing the preload force of the spring on the locked component and/or the friction coefficient between the locked component and the setback arming pin, the drop safety of the fuze setback arming device can be improved.

Key words: fuze, setback arming device, impact response, drop safety, computer simulation

ZOU Chenlai, WANG Yushi, WANG Guangyu. Effect of Friction on Arming Motion of Fuze Setback Arming Pin[J]. Acta Armamentarii, 2023, 44(5): 1296-1309.

Figures/Tables 22

References 19

[1]	刘宣, 闻泉, 王雨时, 等. 引信后坐保险机构斜置设计方案[J]. 探测与控制学报, 2016, 38(5):10-14.
	LIU X, WEN Q, WANG Y S, et al. Inclined design of fuze setback arming device[J]. Journal of Detection & Control, 2016, 38(5):10-14. (in Chinese)
[2]	刘宣. 某小口径破甲弹气动特性及其引信机构动态特性研究[D]. 南京: 南京理工大学, 2017.
	LIU X. Research on the aerodynamic characteristics of a small-caliber antiarmor projectile and its fuze device dynamic characteristics[D]. Nanjing: Nanjing University of Science and Technology, 2017. (in Chinese)
[3]	李来福, 王雨时, 闻泉. 引信经典后坐保险机构对过载时间的响应特性[J]. 兵器装备工程学报, 2014, 35(7):147-152.
	LI L F, WANG Y S, WEN Q. Response of classic setback arming devices to setback environment[J]. Journal of Ordnance Equipment Engineering, 2014, 35(7):147-152. (in Chinese)
[4]	居荣誉, 王雨时, 闻泉. 引信后坐质量-弹簧系统动态特性与设计[J]. 兵器装备工程学报, 2020, 41(9):68-74.
	JU R Y, WANG Y S, WEN Q. Dynamic characteristics and design of fuze setback mass-spring system[J]. Journal of Ordnance Equipment Engineering, 2020, 41(9):68-74. (in Chinese)
[5]	陆静, 程翔, 鞠敏, 等. 坠落冲击环境下引信保险系统的可靠性仿真[J]. 南京理工大学学报, 2001, 25(4):369-372.
	LU J, CHENG X, JU M, et al. Reliability simulation of fuze safety system in drop impact environment[J]. Journal of Nanjing University of Science and Technology, 2001, 25(4):369-372. (in Chinese)
[6]	曹莹, 王雨时. 引信双自由度后坐保险机构动态响应特性分析[J]. 探测与控制学报, 2008, 30(2):47-50,55.
	CAO Y, WANG Y S. Analysis of dynamic response of fuze setback arming device with two degree of freedom[J]. Journal of Detection & Control, 2008, 30(2):47-50,55. (in Chinese)
[7]	曹莹. 引信双自由度后坐保险机构理论研究[D]. 南京: 南京理工大学, 2007.
	CAO Y. Theoretical research on fuze setback arming device with two degree of freedom[D]. Nanjing: Nanjing University of Science and Technology, 2007. (in Chinese)
[8]	王海龙. 引信低过载后坐保险机构技术研究[D]. 南京: 南京理工大学, 2018.
	WANG H L. Research on fuze low overload setback arming device[D]. Nanjing: Nanjing University of Science and Technology, 2018. (in Chinese)
[9]	臧旭跃. 引信保险机构动态特性仿真[D]. 太原: 中北大学, 2015.
	ZANG X Y. Simulation on dynamic response of fuze arming device[J]. Taiyuan:North University of China, 2015. (in Chinese)
[10]	GUANG L H, HE F T. Analysis of dynamic behavior of zigzag groove setback arming device with two degree of freedom[J]. Advanced Materials Research, 2011, 1380:317-319.
[11]	金路轩, 闻泉, 王雨时, 等. 裸态平底弹丸底向下垂直跌落冲击特性[J/OL]. 兵工学报:1-10[2022-01-16].
	JIN L X, WEN Q, WANG Y S, et al. Vertical drop impact characteristics of flat base projectile without package with bottom-down[J/OL]. Acta Armamentarii: 1-10 [2022-01-16]. in Chinese)
[12]	谭惠民, 刘新羽. 后坐机构坠落安全性的工程设计[J]. 兵工学报, 1991, 22(4):16-21.
	TAN H M, LIU X Y. Engineering design of drop safety of fuze setback device[J]. Acta Armamentarii, 1991, 22(4):16-21. (in Chinese)
[13]	李世义. 后坐机构平时安全性研究[J]. 兵工学报(引信分册), 1983(2):50-63.
	LI S Y. Research on fuze safety of setback device[J]. Acta Armamentarii(Volume of Fuze), 1983(2):50-63. (in Chinese)
[14]	韩学平, 芮筱亭, 洪俊, 等. 引信惯性部件坠落动力学试验分析及数值仿真[J]. 系统仿真学报, 2008, 20(8):1990-1993.
	HAN X P, RUI X T, HONG J, et al. Test analysis and numerical simulation of fuse inertia components falling dynamics[J]. Journal of System Simulation, 2008, 20(8): 1990-1993. (in Chinese)
[15]	张卓宁. 引信冲击环境试验数据处理技术及数据库技术[D]. 南京: 南京理工大学, 2004.
	ZHANG Z N. Fuze impact environmen-tal test data processing technology and database technology[D]. Nanjing: Nanjing University of Science and Technology, 2004. (in Chinese)
[16]	王雨时. 引信设计用内弹道和中间弹道特性分析[J]. 探测与控制学报, 2007, 20(4):1-5.
	WANG Y S. Analysis of interior ballistic and intermediate ballistic characteristic for fuze designing[J]. Journal of Detection & Control, 2007, 20(4):1-5. (in Chinese)
[17]	檀永杰. 引信曲折槽后坐保险机构理论研究[D]. 南京: 南京理工大学, 2008.
	TAN Y J. Theoretical research on fuze zigzag groove setback arming device[D]. Nanjing: Nanjing University of Science and Technology, 2008. (in Chinese)
[18]	倪庆乐. 巡飞弹引信后坐保险机构和惯性开关动态特性研究与设计[D]. 南京: 南京理工大学, 2017.
	NI Q L. Research and design of dynamic characteristics of setback arming device and inertial switch of cruise missile fuze[D]. Nanjing: Nanjing University of Science and Technology, 2017. (in Chinese)
[19]	倪庆乐, 王雨时, 闻泉, 等. 基于有限元的裸态弹丸底向下跌落冲击特性[J]. 探测与控制学报, 2016, 38(6):51-56.
	NI Q L, WANG Y S, WEN Q, et al. Drop impact properties of projectile without pakage bottom down based finite element[J]. Journal of Detection & Control, 2016, 38(6):51-56. (in Chinese)

参数对象	数值
惯性筒质量m₁/g	0.18
惯性簧质量m₂/g	0.09
惯性簧刚度K₁/(N·mm^-1)	0.2265
惯性簧预压量λ₁/mm	17.0
惯性簧预压力F₁/N	3.85
解除保险行程h/mm	9.67
侧压簧预压力F₂/N	2.22

参数对象	数值
惯性筒质量m₁/g	0.18
惯性簧质量m₂/g	0.09
惯性簧刚度K₁/(N·mm^-1)	0.2265
惯性簧预压量λ₁/mm	17.0
惯性簧预压力F₁/N	3.85
解除保险行程h/mm	9.67
侧压簧预压力F₂/N	2.22

参数类型	过载峰值k₁/g	作用时间(T/2)/ms
发射过载^[16]	5576	9.12
跌落过载1^[17]	5500	1.38
跌落过载2^[17]	6600	0.58
跌落过载3^[15]	7366	0.23
跌落过载4^[18]	20000	0.10

参数类型	过载峰值k₁/g	作用时间(T/2)/ms
发射过载^[16]	5576	9.12
跌落过载1^[17]	5500	1.38
跌落过载2^[17]	6600	0.58
跌落过载3^[15]	7366	0.23
跌落过载4^[18]	20000	0.10

倾斜角度摩擦系数μ	跌落过载1				跌落过载2
倾斜角度摩擦系数μ	0°	0.1°	1.0°	5.0°	0°	0.1°	1.0°	5.0°
0	0.937	0.946	0.946	0.949	0.834	0.846	0.847	0.850
0.05	0.952	0.955	0.954	0.951	0.858	0.862	0.859	0.853
0.10	0.966	0.966	0.963	0.954	0.887	0.878	0.873	0.857
0.15	0.983	0.977	0.972	0.956	0.922	0.896	0.887	0.860
0.20	0.997	0.988	0.983	0.960	0.966	0.915	0.903	0.863
0.25	1.013	1.000	0.993	0.962	1.028	0.937	0.920	0.867
0.30	1.030	1.013	1.003	0.965	1.164	0.960	0.938	0.871
0.35	1.048	1.026	1.014	0.969	∞	0.987	0.958	0.875
0.50	1.106	1.072	1.051	0.980	∞	1.094	1.032	0.887
1.00	∞	1.317	1.233	1.023	∞	∞	∞	0.938