| 结合面切向动态特性参数的改进Levy法识别及验证研究 |
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| 引用本文： | 郭丹枫,胡小秋,王志勇. 结合面切向动态特性参数的改进Levy法识别及验证研究[J]. 制造技术与机床, 2011, 0(10) |
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| 作者姓名： | 郭丹枫 胡小秋 王志勇 |
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| 作者单位： | 南京理工大学机械工程学院; |
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| 基金项目： | “高档数控机床与基础制造装备”科技重大专项课题(2009ZX04014-036) |
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| 摘 要： | 对Levy法进行了改进,通过对阻尼比的迭代实现结合面动态特性参数的识别。实验表明,该方法对刚度和阻尼比都有较高的识别精度,其中对阻尼比的精确识别是该方法最大的优点。同时研究了基于ANSYS的结合面动态特性参数的验证方法,并通过将改进的Levy法识别得到的参数代入到ANSYS验证模型中,计算得到的结合面固有频率与实测频率误差小于6%,峰值误差为50%左右,说明了识别参数的有效性以及验证方法的可靠性。
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| 关 键 词： | 结合面 参数识别 Levy法 验证方法 |
Study on the dynamic parameter identification of fixed joints and its authentication |
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| GUO Danfeng,HU Xiaoqiu,WANG Zhiyong. Study on the dynamic parameter identification of fixed joints and its authentication[J]. Manufacturing Technology & Machine Tool, 2011, 0(10) |
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| Authors: | GUO Danfeng HU Xiaoqiu WANG Zhiyong |
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| Affiliation: | GUO Danfeng,HU Xiaoqiu,WANG Zhiyong(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,CHN) |
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| Abstract: | Levy method is improved so that it can achieve the dynamic parameter of fixed joints through iteration of the damping ratio.It showed that the method not only can identify the stiffness accurately,but also can get damping ratio accurately.Also it was studied the authentication method of the dynamic parameter based on ANSYS,and put the test data into ANSYS model,the results showed that the natural frequency error was less than 6%,peak error was about 50%,which pointed out the effectiveness of parameter and t... |
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| Keywords: | Fixed Joints Parameter Identification Levy Method Authentication Method |
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