基于ANSYS/LS-DYNA的弹簧式速关阻爆阀冲击仿真
吴益晓1,2,刘胜1,2
(1.瓦斯灾害监控与应急技术国家重点实验室,重庆 400037;2.中煤科工集团 重庆研究院有限公司,重庆 400039)
摘要:根据弹簧式速关阻爆阀的结构形式,采用Pro/E对其进行三维建模,并导入ANSYS/LS-DYNA软件对阀板冲击阀座的过程进行仿真模拟,分析其冲击特性。同时通过动态力学模型计算对比仿真模拟得到的结果,验证其正确性。最后得出结论:ANSYS/LS-DYNA能够准确地仿真模拟阻爆阀关闭时阀板对阀座的冲击过程,且结果表明,阀板与阀座在受冲击时的等效应力应变仍在弹性范围内,但阀板存在反弹现象,对阀座造成二次冲击,这不仅延长了阀门的关闭时间,而且影响了阀门的使用寿命,设计时应采取措施避免。同时需综合考虑阀板与阀座的选材问题。
关键词:阻爆阀;ANSYS/LS-DYNA;仿真模拟;冲击特性
中图分类号:TP391 文献标志码:A   doi:10.3969/j.issn.1006-0316.2014.08.002
文章编号:1006-0316 (2014) 08-0006-06
Impact simulation of spring type quick-closing explosion-proof valve based on ANSYS/LS-DYNA
WU Yi-xiao1,2,LIU Sheng1,2
( 1.National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037, China; 2.China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400039, China)
Abstract:3D model of the spring type quick-closing explosion-proof valve modeled by Pro/E according to its structure was imported to ANSYS/LS-DYNA, in order to simulate the process of valve plate impacting the valve seat and analyse the impacting performance. And the results of stimulation was compared with the results get from dynamic mechanical model calculation, to confirm its validity. Finally the conclusion is given: ANSYS/LS-DYNA can accurately simulate the process of valve plate impacting the valve seat when the valve is closing, and the results show that equivalent stress and strain of valve plate and valve seat in the impacting process is still in the elastic range. But there is a rebound phenomenon of valve plate which makes the valve seat be impacted again. This not only prolong the valve closing time, but also affect the service life of the valve. So some measures should be taken to avoid it in the design. Meanwhile, the material selection problem of valve plate and seat should be considered synthetically.
Key words:explosion-proof valve;ANSYS/LS-DYNA;simulation;impacting performance
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收稿日期:2014-03-26
基金项目:国家科技重大专项(2011ZX05041-005)
作者简介:吴益晓(1984-),男,浙江温州人,硕士,工程师,主要从事煤矿安全设备研究工作。
 

 

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