朱大鹏.随机振动条件下包装件动态特性识别方法[J].包装工程,2017,38(17):96-101.
ZHU Da-peng.Dynamic Property Identification Method for Packages under Random Vibration[J].Packaging Engineering,2017,38(17):96-101. |
| 随机振动条件下包装件动态特性识别方法 |
| Dynamic Property Identification Method for Packages under Random Vibration |
| 投稿时间：2017-04-01 修订日期：2017-09-10 |
| DOI： |
| 中文关键词: 动态特性识别 随机振动 支座激励 时域分析 |
| 英文关键词: dynamic property identification random vibration base excitation time domain analysis |
| 基金项目:兰州市人才创新创业项目（2015-RC-62） |
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| 中文摘要: |
| 目的 建立一种识别包装件在随机振动激励条件下的动态特性方法。方法 基于多自由度系统的伊藤方程，运用随机响应矩分析法分析系统的恢复力特性和阻尼特性与响应统计量之间的数学关系，建立应用推导的代数关系分析系统动态特性的方法。采用单自由度非线性系统和二自由度线性系统作为实例，验证方法的准确性。结果 从实例中参数识别结果和真实值的对比表明，识别结果的误差小于2%，具有良好的准确性。文中方法是一种仅应用响应数据的时域方法，具有良好的通用性。结论 文中方法可用于随机振动激励条件下包装件的动态特性识别。 |
| 英文摘要: |
| The work aims to establish a method to identify the dynamic properties of the packages under the random vibration excitation. Based on the Ito equation of the multiple-degree-of-freedom system, the mathematical relationship between the resilience performance and damping characteristics of the system and the response statistics was analyzed by means of the random response moment analysis. The method that the derived algebraic relation was applied to analyze the system’s dynamic properties was estab-lished. With the single degree-of-freedom nonlinear system and the two degree-of-freedom linear system as an example, the accuracy of the method above was verified. The comparison on the identification results of the parameter in the example and the true values indicated that, the error of the identification results was less than 2% and such method had good accuracy. The proposed method in this paper was a time domain method for only the application response data and it had good generality. Such method can be used to identify the dynamic properties of the packages under the random excitation. |
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