引信剪切销保险机构解除保险特性仿真方法
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摘要
针对引信剪切销保险机构设计以经验为主的现状,提出了引信剪切销保险机构解除保险特性仿真方法。该方法采用LS-DYNA软件对引信剪切销保险机构解除保险特性进行了仿真研究,得到了结构尺寸和材料、过载大小和持续时间与剪切销剪断后轴向伸缩系数、径向伸缩系数的关系。仿真结果表明,在便于装配的前提下剪切销和保险销与支座间的间隙越小越好,在保险销和支座剪切销孔口棱角处去毛刺可制圆角但不可倒角,保险销、剪切销和支座的最优材料分别为45钢、HPb63-3Y铜合金和7A04铝合金,剪切销保险机构适用于过载持续时间较短的发射环境。
According to the situation that shear pin safety device in fuze was usually designed empirically,this article present the simulation of arming property of shear pin safety device in fuze,LS-DYNA was used to research arming property of shear pin safety device in fuze,relationship between structure dimension and materials,size and duration of loads with coefficient of axial deformation and coefficient of radial deformation after shear pin was cut.Simulation result turned out that clearances between shear pin,aiming pin with supporting seat were smallest possibly in easy assembly conditions.Making rounded corner but not making fillet to remove burrs in the edges and corners of shear pin pores in aiming pin and supporting seat.The best materials of aiming pin,shear pin and supporting seat respectively were 45 steel,HPb63-3Ycopper alloy and 7A04 aluminum alloy.Shear pin safety device was suitable for short duration launch environment.
According to the situation that shear pin safety device in fuze was usually designed empirically,this article present the simulation of arming property of shear pin safety device in fuze,LS-DYNA was used to research arming property of shear pin safety device in fuze,relationship between structure dimension and materials,size and duration of loads with coefficient of axial deformation and coefficient of radial deformation after shear pin was cut.Simulation result turned out that clearances between shear pin,aiming pin with supporting seat were smallest possibly in easy assembly conditions.Making rounded corner but not making fillet to remove burrs in the edges and corners of shear pin pores in aiming pin and supporting seat.The best materials of aiming pin,shear pin and supporting seat respectively were 45 steel,HPb63-3Ycopper alloy and 7A04 aluminum alloy.Shear pin safety device was suitable for short duration launch environment.
引文
[1]李来福.某枪榴弹机械触发起爆引信关键技术研究[D].南京:南京理工大学,2013.
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[3]李朝阳,徐蓬朝,黄惠东,等.剪切销过载开关设计的有限元方法[J].探测与控制学报,2014,36(2):41-45.
[4]范存杰.用火箭法求剪切销动态抗剪强度的试验研究[J].弹箭与控制学报,1995(4):62-65.
[5]娄剑锋,王政,洪涛,等.钨合金杆侵彻半无限厚铝合金靶的数值研究[J].高压物理学报,2009,23(1):65-70.
[6]陈刚,陈忠富,陶俊林.45钢动态塑性本构参量与验证[J].爆炸与冲击,2005,25(5):451-456.
[7]胡昌明,贺红亮,胡时胜.45钢的动态力学性能研究[J].爆炸与冲击,2003,23(2):188-192.
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[2]张梦玫,徐文耀,王双胜.剪切销断裂过程的仿真研究[J].科技通报,2012,28(4):212-213.
[3]李朝阳,徐蓬朝,黄惠东,等.剪切销过载开关设计的有限元方法[J].探测与控制学报,2014,36(2):41-45.
[4]范存杰.用火箭法求剪切销动态抗剪强度的试验研究[J].弹箭与控制学报,1995(4):62-65.
[5]娄剑锋,王政,洪涛,等.钨合金杆侵彻半无限厚铝合金靶的数值研究[J].高压物理学报,2009,23(1):65-70.
[6]陈刚,陈忠富,陶俊林.45钢动态塑性本构参量与验证[J].爆炸与冲击,2005,25(5):451-456.
[7]胡昌明,贺红亮,胡时胜.45钢的动态力学性能研究[J].爆炸与冲击,2003,23(2):188-192.
[8]吕剑.泰勒杆实验对材料动态本构参数的确认和优化确定[D].绵阳:中国工程物理研究院,2005.
[9]《工程材料实用手册》编辑委员会.工程材料实用手册(第二版第4卷)[S].北京:中国标准出版社,2001.
[10]《工程材料实用手册》编辑委员会.工程材料实用手册(第二版第1卷)[S].北京:中国标准出版社,2001.