Finite Element Analysis on Dynamic Characteristics of Artillery's Breech Mechanism
-
摘要: 在火炮开闩过程中,炮闩系统常因发生剧烈碰撞而损坏。针对炮闩动态应力响应问题,基于接触有限元理论,运用ABAQUS软件建立了某火炮炮尾炮闩系统的非线性结构动力学模型,模拟炮闩机构中复杂的接触碰撞现象,并采用隐式时间积分方法仿真模拟开闩过程,研究火炮复进过程中开闩凸轮撞击开闩板时及开闩过程中的炮尾炮闩结构中主要部件的动态应力响应,通过对结果的分析,获得主要部件动态应力大小。研究结果表明,火炮零件能够较好地满足强度要求,但抽筒子所受应力较大,其计算结果可以为改进曲柄、闩体结构提供依据。Abstract: The breech mechanism is always damaged by the serious impact during the process of breechblock-opening. Aim at the dynamic stresses response, a nonlinear structural dynamic model of artillery's breech mechanism has been established based on the contact finite element theory with ABAQUS to simulate the complex contact and impact in the breech mechanism. In the model, the implicit time integration method is used to simulate the process of opening block to study the dynamic stresses on the main parts of artillery's breech mechanism when the opening latch cam has an impact on the opening latch plate in the process of counter-recoiling. The dynamic stresses on the main parts can be obtained by analyzing the results. The results show that the parts of artillery can satisfy the strength requirement of material and the stress on extractor is big, so that the calculation results can provide reference for changing the structural design of crank and breechblock.
-
Key words:
- ABAQUS /
- breech mechanism /
- calculations /
- computer simulation
-
[1] 谢锋,何行.基于有限元模型的炮闩结构的静力学强度分析[J].科技情报开发与经济,2007,17(9):182 Xie F, He H. Analysis on the static strength of the breechblock structure based on FEM[J]. Scitech Information Development & Economy,2007,17(9):182 (in Chinese) [2] 宁变芳,喻华萨,王在森,等.ANSYS二次开发在某新型闩体失效机理分析中的应用[J].火炮发射与控制学报,2009,3(1):18-20 Ning B F, Yu H S, Wang Z S, et al. Application of ansys secondary exploitation in a new type of breechblock failure mechanism analysis[J]. Journal of Gun Launch & Control,2009,3(1):18-20 (in Chinese) [3] 方怡宏.火炮结构教程[M].南京:华东工学院,1991 Fang Y H. Artillery structure tutorial[M]. Nanjing:Nanjing University of Science and Technology, 1991 (in Chinese) [4] 刘达,顾克秋,何永.基于不同土体的牵引火炮动态应力分析[J].南京理工大学学报,2008,12,6(32):681-685 Liu D, Gu K Q, He Y. Dynamic stress analysis of towed howitzer placed on different soils[J]. Journal of Nanjing University of Science and Technology (Natural Science),2008,12,6(32):681-685 (in Chinese) [5] 赵腾论.ABAQUS在机械工程中的应用[M].北京:中国水利水电出版设,2007 Zhao T L. Application of ABAQUS in mechanical engineering[M]. Beijing:China Water Power Press,2007 (in Chinese) [6] 庄茁,张帆,岑松,等.ABAQUS非线性有限元分析与实例[M].北京:科学出版社,2005 Zhuang Z, Zhang F, Cen S, et al. The example of nonlinear finite element analysis of ABAQUS[M]. Beijing:Science Press,2007 (in Chinese) [7] 卢其辉.复杂结构的动态响应有限元分析技术和应用[M].南京:南京理工大学,2011:8-9 Lu Q H. Finite element analysis techniques and applications of complex structure of the dynamic response[M]. Nanjing:Nanjing University of Science and Technology,2011:8-9 (in Chinese) [8] 王虎,顾克秋.牵引火炮非线性有限元隐式动力学分析[J].南京理工大学学报,2006,8,4(30):462-466 Wang H, Gu K Q. Implicit dynamics analysis of nonlinear finite element for towed howitzer[J]. Journal of Nanjing University of Science and Technology,2006,8,4(30):462-466 (in Chinese) [9] 王凯,乐贵高,于存贵,等.某舰炮非线性动力学分析[J].系统仿真学报,2010,(9):2214-2216 Wang K, Le G G, Yu C G, et al. Nonlinear dynamics analysis of naval gun[J]. Journal of System Simulation,2010,(9):2214-2216 (in Chinese)
点击查看大图
计量
- 文章访问数: 231
- HTML全文浏览量: 23
- PDF下载量: 5
- 被引次数: 0