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变化油压冲击下火炮制退机唇形密封圈的动密封性能
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国家自然科学基金项目(51175508).


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    摘要:

    研究制退机唇形橡胶圈在火炮高速发射时的动密封性能。分析唇形密封圈的工作原理,利用微观组织分析方法研究密封圈失效机制;通过橡胶力学性能试验和拟合寻优,确定橡胶超弹性本构模型,利用ABAQUS建立密封圈轴对称有限元模型;通过ADAMS仿真求解得到不同装药条件下制退机后坐速度、变化油压等参数,并综合考虑初始过盈量、摩擦因数、动密封速度等因素,分别对密封圈的安装、静密封和动密封等工况进行模拟;根据密封圈失效准则,研究变化油压冲击作用下的唇形橡胶圈动密封性能,对研究和掌握火炮发射状态下唇形密封圈的寿命规律具有一定参考价值。

    Abstract:

    The dynamic seal performance of lip seal of artillery recoil brake when artillery firing at high speed was studied. The working principle of lip seal was analyzed, and the seal failure mechanism was studied by using the microstructure analysis method. Through the rubber mechanical properties testing and fitting optimization, the hyperelastic constitutive model of rubber was identified, and the sealing ring axisymmetric finite element model was established based on ABAQUS. The recoil brake parameters such as recoil displacement, recoil velocity and hydraulic pressure under the condition of different charge were solved by using the simulation software of ADAMS. The seal ring installation, static seal and dynamic seal condition were simulated by considering the effect of the initial amount of interference, the friction coefficient, the changing oil pressure and the relative velocity of dynamic seal. According to the seal failure criterion, the lip seal dynamic sealing performance was researched under two typical changeable hydraulic shock. This study result has certain reference value for mastering the law of sealing ring life under artillery firing condition.

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崔凯波,秦俊奇,狄长春,祝天宇,郝 刚.变化油压冲击下火炮制退机唇形密封圈的动密封性能[J].润滑与密封,2014,39(8):24-30.
.[J]. Lubrication Engineering,2014,39(8):24-30.

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  • 在线发布日期: 2014-11-25
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