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兵工学报 ›› 2015, Vol. 36 ›› Issue (4): 752-757.doi: 10.3969/j.issn.1000-1093.2015.04.025

• 研究简报 • 上一篇    下一篇

空投缓冲气囊有限元模型修正方法

李建阳1, 王红岩1, 芮强1, 洪煌杰1, 张芳2   

  1. (1.装甲兵工程学院 机械工程系, 北京 100072; 2.中国北方特种车辆研究所, 北京 100072)
  • 收稿日期:2014-07-18 修回日期:2014-07-18 上线日期:2015-06-02
  • 作者简介:李建阳(1986—), 男, 博士研究生
  • 基金资助:
    军内科研项目(2013ZB08)

Finite Element Model Updating Method of Airdrop Airbag

LI Jian-yang1, WANG Hong-yan1, RUI Qiang1, HONG Huang-jie1, ZHANG Fang2   

  1. (1.Department of Mechanical Engineering, Academy of Armored Force Engineering, Beijing 100072, China;2.China North Vehicle Research Institute, Beijing 100072, China)
  • Received:2014-07-18 Revised:2014-07-18 Online:2015-06-02

摘要: 为了提高空投缓冲气囊有限元模拟的准确性,需要对气囊有限元模型进行修正。建立了载荷-气囊系统有限元模型,通过模型参数对气囊缓冲特性的灵敏程度分析,选择气囊与地面之间的摩擦系数和气囊排气口流量系数作为待修正参数,建立了摩擦系数、流量系数与冲击响应的响应面模型,对该响应面模型采用遗传算法进行迭代修正,求解出待修正参数的最优解。通过修正前后仿真结果与试验结果的对比验证了模型修正的有效性。

关键词: 兵器科学与技术, 空投缓冲气囊, 有限元, 响应面方法, 模型修正

Abstract: The finite element model of airdrop airbag should be updated to improve it simulation accuracy. Finite element model of payload-airbag is established. The sensitivity of the model parameters to the cushion characteristics of airbag is analyzed, and the coefficient of friction between airbag and ground and the flow coefficient of airbag are selected as the parameters to be modified. The response surface models of impact response vs. friction and flow coefficients are established. Based on the response surface models, the optimal solution is solved by genetic algorithm. The result indicates that the finite element model updating of airdrop airbag is efficient through the comparison of the simulated results before and after updating and the test results.

Key words: ordnance science and technology, airdrop airbag, finite element, response surface method, model updating

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