欢迎访问《兵工学报》官方网站,今天是 分享到:

兵工学报 ›› 2014, Vol. 35 ›› Issue (10): 1595-1603.doi: 10.3969/j.issn.1000-1093.2014.10.012

• 论文 • 上一篇    下一篇

某导弹无依托发射场坪动态响应研究

周晓和, 马大为, 胡建国, 仲建林   

  1. (南京理工大学 机械工程学院江苏 南京 210094)
  • 收稿日期:2013-10-02 修回日期:2013-10-02 上线日期:2014-11-28
  • 作者简介:周晓和(1988—), 男, 博士研究生
  • 基金资助:
    国家自然科学基金项目(51303081); 江苏省自然科学基金项目(BK20130761)

Research on Dynamic Response of Launching Site for Missile Unsupported Random Launch

ZHOU Xiao-he, MA Da-wei, HU Jian-guo, ZHONG Jian-lin   

  1. (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Received:2013-10-02 Revised:2013-10-02 Online:2014-11-28

摘要: 为得到某导弹无依托发射时场坪的动态响应,采用Hongnestad方程及改进后的Saenz单轴方程分别拟合混凝土在受压时的上升段及下降段应力-应变关系,构建了一条适用于沥青混凝土的受压应力-应变曲线;引入损伤因子并结合Sidiroff能量等价原理,建立了某导弹无依托发射场坪塑性损伤动态本构;基于含场坪的发射平台非线性结构动力学模型,分析了导弹在发射状态下场坪的动态响应。研究结果表明:在导弹垂直待发射阶段,后支腿处场坪比前支腿处场坪动态响应明显;在导弹垂直发射阶段,发射筒底部处场坪沉降较大,发射筒底部处场坪与后支腿处场坪交叉区域损伤严重。研究结果可为导弹无依托发射前场坪快速评估提供理论支撑。

关键词: 兵器科学与技术, 无依托发射, 场坪, 应力应变关系, 塑性损伤, 动态响应

Abstract: To obtain the dynamic response of launching site, the Hongnestad equation and improved Saenz equation are used to construct the upward and downward stress-strain curves of compressed concrete, which is suitable for asphalt concrete. Damage factor and Sidiroff energy equivalent principle are introduced to establish a plastic damage dynamic constitutive model of launching site for missile unsupported random launch. The dynamic response of the site during launching is analyzed based on nonlinear structural dynamics model considering launching site. The results show that the dynamic response of site below back supports is more significant than that below front support before missile launching. The settlement of site below the bottom of canister launcher is larger, and the sites below the back supports and the bottom of canister launcher are seriously damaged during launching.

Key words: ordnance science and technology, unsupported random launching, launching site, stress-strain relationship, plastic-damage, dynamic response

中图分类号: