| SDC-2500型煤层气车载钻机桅杆支架的模态分析 |
| 投稿时间：2022-02-22 修订日期：2022-03-02 点此下载全文 |
| 引用本文：杜垚森,师敏,赵远,等.SDC-2500型煤层气车载钻机桅杆支架的模态分析[J].钻探工程,2022,49(2):51-57.DU Yaosen,SHI Min,ZHAO Yuan,et al. Modal analysis of the mast support frame of SDC-2500 coal bed methane truck-mounted rig[J]. Drilling Engineering, 2022,49(2):51-57. |
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| 中文摘要:煤层气车载钻机桅杆是重要的执行机构，桅杆支架是桅杆的重要支撑，其工作振动的稳定性直接决定着桅杆工作的可靠性。采用有限元模态分析方法，对桅杆支架自由振动状态和预应力状态进行模态模拟分析，得到此两种状态下固有频率和模态振型数值结果及变化规律，通过对比分析，说明二者的结果很相近，但也存在细微差别，结果表明预应力对桅杆支架的振动影响很小，同时验证了桅杆支架不会产生共振，为支架结构设计提供了支撑，为拓扑优化设计和更深入的动力学分析提供了理论基础，具有十分重要的意义。 |
| 中文关键词:煤层气车载钻机 桅杆支架 模态分析 固有频率 模态振型 |
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| Modal analysis of the mast support frame of SDC-2500 coal bed methane truck-mounted rig |
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| Abstract:The mast of coal bed methane truck-mounted rig is an important executive device， while the mast support frame is significant for supporting the mast， and its vibration stability determines the reliability of the mast. The finite element modal method is used to analyze the support frame under both the free vibration state and the prestressed state， and the numerical results and the change rule of the natural frequency and the modal shape are attained for the two states. Comparative analysis shows that the results for the two state are close but with slight difference， indicating that prestress is of little impact on vibration. At the same time， it is verified that the mast support frame will not generate resonance. Moreover， the modal results provide a theoretical support for the structural design of the frame， and a theoretical basis for topology design and in-depth dynamic analysis with crucial significance. |
| keywords:coalbed methane truck-mounted rig mast support frame modal analysis natural frequency modal vibration |
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