| 槽孔加工中钻杆系统的非线性运动与动力稳定性 |
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| 引用本文： | 孔令飞,李言,吕延军,李德信,李淑娟. 槽孔加工中钻杆系统的非线性运动与动力稳定性[J]. 农业机械学报, 2009, 40(2) |
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| 作者姓名： | 孔令飞 李言 吕延军 李德信 李淑娟 |
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| 作者单位： | 西安理工大学机械与精密仪器工程学院,西安,710048;西安理工大学机械与精密仪器工程学院,西安,710048;西安理工大学机械与精密仪器工程学院,西安,710048;西安理工大学机械与精密仪器工程学院,西安,710048;西安理工大学机械与精密仪器工程学院,西安,710048 |
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| 基金项目： | 国家重点基础研究发展规划(973计划),陕西省自然科学基金 |
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| 摘 要： | 考虑了切削力波动、质量偏心及切削液流体力对钻杆动特性的影响.在求解切削液动态流体力时,引入变分约束原理,在动力积分、迭代过程中实时形成修正的Reynolds方程变分形式的有限元方程及其扰动方程,同时求得了切削液流体力及其Jacobian矩阵,并且使其具有相互协调一致的精度.在求解钻杆系统非线性动力学响应时,通过改变系统的时间尺度,使系统周期轨迹的周期显式地出现在系统方程中,并将周期也作为一个参数参与到迭代过程中,减少了对周期轨迹及其周期求解的计算量.同时,运用 Floquet稳定性理论,将理论计算与实验结果相结合分析了随系统控制参数改变钻杆系统周期运动的局部稳定性和分岔行为.
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| 关 键 词： | 槽孔 钻杆 非线性动力学 稳定性 分岔 |
Stability and Nonlinear Response of Drilling Shaft System in Deep Slot Hole Drilling |
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| Kong Lingfei,Li Yan,Lü Yanjun,Li Dexin,Li Shujuan. Stability and Nonlinear Response of Drilling Shaft System in Deep Slot Hole Drilling[J]. Transactions of the Chinese Society for Agricultural Machinery, 2009, 40(2) |
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| Authors: | Kong Lingfei Li Yan Lü Yanjun Li Dexin Li Shujuan |
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| Affiliation: | School of Mechanical and Instrumental Engineering;Xi'an University of Technology;Xi'an 710048;China |
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| Abstract: | The effects of fluctuation of cutting force,the mass eccentricity and the hydrodynamic force of cutting fluid can be taken into consideration in the model of drilling shaft system.To solve the hydrodynamic force of cutting fluid,the variational form of Reynolds equation in hydrodynamic fluid was revised continuously to satisfy certain constraint conditions by variational constraint approach.By means of this approach,a perturbed equation could be obtained directly on the finite element equation.Consequently,... |
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| Keywords: | Slot hole Drilling shaft Nonlinear dynamics Stability Bifurcation |
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