| 基于灵敏度分析的井架结构模型修正方法研究 |
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| 引用本文： | 刘金梅,韩国有,周国强. 基于灵敏度分析的井架结构模型修正方法研究[J]. 科学技术与工程, 2009, 9(9) |
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| 作者姓名： | 刘金梅 韩国有 周国强 |
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| 作者单位： | 大庆石油学院机械科学与工程学院,大庆,163318;大庆石油学院秦皇岛分院井架检测国家计量认证重点实验室,秦皇岛,066004 |
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| 基金项目： | 中国石油天然气集团公司科学研究与技术开发项目 |
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| 摘 要： | 从井架结构模态参数对物理参数变化的灵敏度出发,探讨了井架结构的模型修正问题.以设计参数型模型修正方法为基础,对井架结构杆件的材料、截面形状和几何尺寸等参数进行直接修正.确定优化模型的目标函数及约束变量,利用一阶优化算法对结构参数进行了优化和状态评估.通过实验室简易井架模型的分析验证了此方法的可行性.该方法为复杂井架结构的损伤识别和状态评估提供了一个新思路.修正算法的优化方法采用ANSYS一阶优化方法,敏感性分析和模型修正完全基于ANSYS软件进行,适合于实际工程的应用.
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| 关 键 词： | 井架结构 模型修正 灵敏度分析 损伤识别 模态参数 |
Research on Model Updating Method of Derrick Structures Based on Sensitivity Analysis |
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| LIU Jin-mei,HAN Guo-you,ZHOU Guo-qiang. Research on Model Updating Method of Derrick Structures Based on Sensitivity Analysis[J]. Science Technology and Engineering, 2009, 9(9) |
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| Authors: | LIU Jin-mei HAN Guo-you ZHOU Guo-qiang |
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| Affiliation: | Mechanical Science and Engineering College of Daqing Petroleum Institute;Daqing 163318;P.R.China;The State Attested Oil Derrick Laboratory1 of Qinhuangdao Division of Daqing Petroleum Institute;Qinhuangdao 066004;P.R.China |
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| Abstract: | The model updating method of the derrick structure based on the modal sensitivity analysis is discussed.In this method,the design parameters of the derrick structure such as materials,cross-section shapes and geometric size are directly updated,the objective function and state variables of optimal model are determined,and the first-order optimization algorithm is used to optimize parameters and assess state.The method has been verified by experimental analysis of simple derrick model.This method provides a ... |
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| Keywords: | derrick structures model updating sensitivity analysis damage identification mode parameters |
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